The Surprising Risks of Too Much Vitamin D for Seniors

[@BetterHealthWhileAging]

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[@richardstokes8758]

😊❤❤❤❤

[@vrado441]

totally flawed and sponsored by Big Pharma ,educate your self?

[@rostyloco1]

This narrative scream disinformation. I would go with what John Campbell reports on instead.

[@W2sumner]

The studies cited were the products of the endocrinology discipline. You might want to include opinions of immunologists because Vitamin D has integral immune function. In particular you might review COVID-19 deaths and Vitamin D levels.

[@HarrisPilton789]

Absolutely! I started taking 10,000 IUs per day while undergoing chemo and radiation for breast cancer. This was during the planned-emic and of course I had a suppressed immune system. I have never contacted the Vid 19. In fact, I haven’t gotten sick at all in the past 2.5 years. I also take 400 mcg of K2 and 400 mg of magnesium glycinate, in addition to other supplements.

[@nancylucas4231]

For effectiveness Vit D needs to be taken in balance with K2, potassium, magnesium .... Even Fauci (who I am not a fan of) said he takes 6,000IU's per day. Go figure.

[@asadwahidi8894]

By

[@GoldKingsMan]

Yea I was in the garden taking some sunshine, never caught Kuruna that time.

[@dreamervanroom]

Yep. And the antocancer dotor promited it.

[@chickenlittle829]

I only became eligible for vitamin d testing after I was diagnosed with osteopenia, and learned I was deficient. At that time I had only been getting about 400IU of vitamin D from cod liver oil, plus a little more from fortified yogurt and fish-little direct sun because I had also had skin cancer. But the amount of supplemental vitamin D required to get my level up to 40ng/100nmol was 4400IU per day for 3 years! Since then I have dropped back to 3000IU/day, but I have halted my bone loss, reduced the number of respiratory infections, and improved my mood. If I had never been tested, and had only started taking 800IU/day, I think I would be in much worse shape, if I would even still be alive.

[@MiroBG359]

why wait to be eligible - $30 test at Labcorp and Quest and able to order online without waiting on anybody

[@jrstf]

@@MiroBG359 - Thanks, I didn't know the cost was so low for this test.

[@gionet601]

I hate to say it you are a wonderful person in the doctor, medical school teaches people wrong. I’m sorry..😮 I did my own research on myself. I read all kinds of papers. I have melanoma stage four and I got over it. They said stay away and stay away from the sun. I felt awful. I was taking 1000 IU vitamin D3 , my sinus were terrible every day I had a sons pill I couldn’t get in the sun again I would burn up, I started taking 5000 IU vitamin D3 and K2, twice a day that’s 10,000 IU , after several weeks, my sinuses were clear I was sitting in the sun in the winter time for a half hour a day I got golden Brown. I never felt better. This is been four years now and the studies I come across., you can take 50,000 Iu a day and nothing will happen, and statins no way in shape or form take a statin , it kills all the cholesterol, and you did some research about cholesterol. We need cholesterol so badly and nobody died. Nobody died of too much cholesterol., it’s the drug companies pushing their product. I’m sorry but I’m a living proof. I’m 64 and I’m so much better now.

[@pistacchini]

Fully agree 🎉I am 75 and I am taking 10.000 IU of vitamin D each and every single day for more than ten years 😊

[@childearth4039]

Congratulations for surviving the stage 4 melanoma. Wish you a long and healthy life.

[@jehanbib1465]

Stay healthy Ameen

[@marksanbourne3064]

With you on this one. I get much Vit A and D from liver and little fishes. Natto in the winter. Also 10k D 3xs/week in summer and daily in winter. If cholesterol is so bad then why has it not killed me at 500-800 mg daily. Red meat and eggs. I never burn even working bareass in my garden for decades. At 70, I do 1/4 mile swim in 10-11 mins. 1/2 in

[@Decision_Justice]

What you're saying is called an anecdote. One Anecdote can say one thing, and another anecdote can say the complete opposite. That's why they're not reliable. And that's why we developed blinded controlled studies where no one knows who's getting the pill with the real Vit D in it until after the study ends. We learn a great deal more from actual studies which can contain thousands of individuals and the data on how things worked for them. It's good, strong, reliable data. And I'm sure that's why the physician is reporting the results of several studies. By the way, my dad was diagnosed with stage 4 melanoma. He drank everyday and ate hot dogs and pizza every day. He didn't take vitamin supplements nor take care of himself and he lived for 21 more years. He was riddled with cancer. My mother exercised every day, researched and took vitamins every day and she died from having too high cholesterol. She had to undergo 2 bypass surgeries due to her arteries getting so clogged up. So yes, people do die of too high cholesterol. Both my parents' experiences are just anecdotes. It's the combined power of the studies that tells us overall what works best, not anecdotes.

[@lawrencestovall7680]

More research is needed on your part Dr.

[@kurtvega3053]

I'm sorry not checking seniors vit D levels is a terrible idea.

[@set3777]

It has now being found that people on Carnivore (high animal fat) diet do not get sunburn and skin cancers. So it was the consumption of seed oils that had been stopping the skin from manufacturing Vit-D when skin is exposed to sunlight. Vit-D is just a skin- sunscreen for your DNA. Just eat animal fats and avoid seed oils, and your body will recover manufacturing Vit-D when you go out in the sun.

[@KarlBunker]

Because ... ?

[@laurie2218]

@@KarlBunkerseriously? Lol

[@jameskantor0459]

Because everyone should know what their blood levels are!

[@KarlBunker]

​@@jameskantor0459 The point of this video is that the information about your vitamin D level simply isn't useful. If you don't know what your level "should" be, and/or if it's highly unlikely that trying to adjust your level will do you any good, then there's no benefit to knowing what your level _is._ Do you know what the average length of your eyebrow hairs is? You could get that checked, so why don't you? You don't because having that information would be useless.

[@jimpowers9553]

I’m a retired medical technologist. This is totally flawed research. Not necessary to test levels? Come on doc. Get a grip.

[@markparker5585]

Another patient cured is another customer lost.

[@GuidoDePalma]

i have hardly ever been suggested by the YT algorithm a video as bad as this one.

[@criticalthought7527]

I have been following Vitamin D research for over 15 years. This person is either suffering from her Big Pharma indoctrination and bias that she received in Med school almost 20 Years ago, or is a malicious shill for Big Pharma and Big Med. We all know that all of the agencies and Med Schools are completely captured by the Medical Industrial Complex and thus any anti D studies must be held to a high degree of skepticism, especially if there's ANY conflict of interest. While lightly touching on the importance of D in the body aside from bones and teeth she promptly ignored this most important aspect of D and Health. Her 'levels' advice is completely flawed in my opinion. For brevity I will offer just two points to defend my claims: A. Just one sunbathing session for 50% of the time it takes to sunburn the skin will typically allow anyone except the very elderly to synthesize about 20,000 iu of D3. If at all possible, this is the best way by far to maintain your D levels due to its natural effectiveness at maintaining D levels and for the many other benefits of sunbathing like increased Nitric Oxide in the blood which acts as a vasodilator that helps to control blood pressure. B. The Hunter Gatherer Tribes on the Savanah like the Hadza and the Maasai have D levels in the 60-80 Ng/ml range. I've seen no evidence that their levels that are well above 30 or 40 Ng/mil are causing these peoples all sorts of health risks. They seem pretty healthy to me, and they don't seem to be falling much when out on their daily hunts. Every time she cited D supplementation she failed to cite the type and dose of D. Daily or semi daily supplementation has been shown to increase active circulating D levels a month or two after starting D3 supplementation. D2 supplementation is the only form that can be prescribed, and is usually offered in large boluses separated by a week or more per dose in studies. All the D2 trials I've seen have been ineffective in raising active D levels. I find that the negatively biased D trials use D2 and / or poorly absorbed D3 supplementation to cast D in a negative light. The "fall study" is the only one where she detailed the complete dosage plan. When citing the "study evidence" that she is basing her claims on she constantly uses weasel words like; perhaps, maybe, etc. for the fall risk claims etc. I find that this type of wording is typically used in these trials that have vague findings, in order to alter the narrative on the importance of Vitamin D for whole body health. I could go on for pages and pages, but suffice to say I find that this Doctor, well meaning or not, is a danger to the Health Spans of everyone who watches this video and falls prey to the narrative that she is peddling. Please everyone, look into all the evidence you can find in the time you have available, to see for yourself whether her claims or my claims that Vitamin D is the most important Molecule for overall health other than Oxygen and Water are accurate. Peace, Love, Health, and Freedom, to all who are fortunate enough to strive for these goals. 🙏 ct

[@criticalthought7527]

I offered a detailed reply to your comment. Unfortunately is was a wasted effort as is has been deleted by the algorithm. Suffice to say that I have over 15 years of personal research to support your claim. Peace, Love, Health, and Freedom, to all who are fortunate enough to strive for these goals. 🙏 ct

[@Kinkle_Z]

Me too... retired CLS. I don't expect too much from MDs, After all, their education is geared more towards writing pharma scripts rather than looking into the root causes of disease and fixing the root problem...and typically the fix involves a proper human diet, regular exercise and good sleep, but there's very little profit in healthy patients.

[@harrybarrow6222]

In the winter in more northern latitudes, most people will be deficient in vitamin D. There is just not enough sunlight. In addition, if you have a darker skin, you will probably have a deficiency. I am in the UK. My doctor, who is Asian, told me that he and all his family take vitamin D supplements. You should take K2 with vitamin D because D increases calcium in the blood. K2 helps direct the calcium to the bones so it is not deposited in the arteries.

[@adelarsen9776]

100 mcg K2 for every 10k of D3.

[@qkcmnt1242]

​@@adelarsen9776 I do 100 mcg vitamin K2 for every 3,000 IUs of vitamin D3. Bye bye plaque!

[@Namrevlis1938]

​I buy D3 & k2 in the correct proportions in olive oil with one drop = one IU.

[@RaymondDay]

Yes if your Shadow is longer than how tall you are you're not getting enough sunlight for vitamin D and in the winter time at least here in the northern part my shadow is a little bit longer than how tall I am so you don't get vitamin D in the winter time.

[@janiceimel9299]

I went to my PC due to a strange rash on both my lower legs. She gave me a salve with minimal results and did not want to even look at my blood work results I had done on my own which showed a very low level of Vitamin. D. Luckily, I went for a consultation with a doctor who was doing stem cell therapy for joints and I showed him the rash & he immediately said “you have low vit D” I showed him the blood work which confirmed his diagnosis. Started taking very high vit D w/K supplement for one month and the rash disappeared entirely. Your advice to not check for Vit D routinely in elderly is awful. I’m very disappointed in this podcast as I have been watching your podcasts for a while. BTW I’m 78 yo.

[@esecallum]

she is working for DRUG companies

[@lesleyvivien2876]

Janice, if I had a GP who had blood test results available, and refused to look at them, she wouldn't see me for dust. I'm glad you ran too!

[@garyssimo]

I reported this as misinformation aimed at making $$ it needs removed. Fast! Do no harm lady!

[@esecallum]

@@garyssimo Conflict of Interest Disclosures: Dr Chen reported receiving grants from Kowa, AstraZeneca, and Ipsen outside the submitted work. Dr Fontana reported receiving grants from Takeda Pharmaceutical Company and Kezar Life Sciences outside the submitted work. No other disclosures were reported.

[@lesleyvivien2876]

@@garyssimo I wish I'd thought of that! Off to report it as misinformation.

[@MikeG-js1jt]

You may be following guidelines created from remarkably limited studies, including the current ridiculous RDA

[@esecallum]

I agree. she is ignorant and arrogant. same copy/paste BS per orders from bigharma. The problem is too little. This little stooge parroting their bs

[@SantiagoHHC]

@SantiagoHHC The information presented about vitamin D is incomplete and only based on the scientific studies mentioned. Over 40 years of practicing naturopathic medicine, I have come to the conclusion that many of those “scientific” studies, (sure are high level research), but are bias and really serve the interest of the pharmaceutical industry. Who are the individuals behind the studies? Do they serve or are affiliated with the industry? Who sponsors such studies? Unhappily you don’t disclose that information. As a MD, of course, you want to keep your license. If you don’t support the industry, sooner or later some regulatory body will look into your practice. The pharmaceutical industry has never been, and will never be interested in healing people… only in monetary profits. Very, very few of the scientific studies are free from bias and monetary interests. I very respectfully encourage you to look for a study that test high doses of vitamin D3 (daily 10,000 IU) administered along the co-factors needed for the proper utilization of that vitamin D. Vitamin K2, magnesium and zinc, in particular. I bet you will never find such a study.

[@rodpettet2819]

I think you should review this video doctor. I'm 80 and take between 5000 and 10000 IU daily. Much less my lumbar spine aches and I have dreadful sciatica. I boost the dose and the pain resolves in a few hours. I started taking 1000 IU a few years ago with K2 and magnesium and my chronic sinusitis that had been troubling me for years cleared along with my no longer needing asthma medications. I was also able to cease my cpap therapy. I feel so much better than 5 years ago. We all have different metabolism and maybe mine is not so efficient. D3 in isolation is pointless and possibly dangerous.

[@marksanbourne3064]

You rock sir. I’m at 10K 3x week in summer and daily in NEng winter. I do K2 in liver, dairy and make natto in the winter. Vit A from small fish. Mag and boron as well. AINT been sick in 26 years. No jabs other than one T-DAP. I’m 70.

[@STree42]

Vitamin D does not get absorbed in a few hours. You're noting a placebo effect, which is harmless except that excessive Vit D levels (> 40) have been associated with greater mortality in every study I have read.

[@rodpettet2819]

@@STree42 Ha ha ha. Powerful placebo. It was a long time before I associated the vitamin D3 and the pain resolution.

[@STree42]

@@rodpettet2819 "I boost the dose and the pain resolves in a few hours." That's not the way vitamin D is metabolized. Placebo effects can be real, though. And they can mask internal damage. Be careful out there.

[@petey4018]

@@STree42 Every study you read? Name two!

[@harrybarrow6222]

The studies reported in this video seem to focus on completely the wrong (random) things, like falls. Vitamin D is vital for the immune system and it is consumed when you are fighting infection. I recall a study that said people who were hospitalised with Covid were found to have vitamin D deficiency. The death rate for Covid at my age (76 then) was about 20%. So, in 2019 I started taking vitamin D daily to support my immune system. Currently I am taking 4000 IU of vitamin D3 (plus K2). In October 2019, I experienced what was one of the worst bouts of “flu” I had ever had. I wonder whether it might have been Covid…. But I survived. I am now 81, still taking D3+K2 and a few other supplements, and I feel great. 😄

[@Inkling777]

I agree, finding it rather bizarre that these researchers were so serious about seeing if there was a relationship between Vitamin D and falls. I wasn't aware that the vitamin played any roll in our ear-based balance system.

[@njccbr9910]

Yeah we had it in December that year and it was pretty severe and have never had Flu that bad in my lungs before. Many people i knew had it too. The conclusion was Covid was in the UK much earlier than we were led to believe.

[@TomMcinerney-g9b]

@@njccbr9910 On Long Island, N.Y., I contracted Covid19 beginning late November, 2019. It seemed to me to spread stealthily, then suddenly.

[@alfredadrianjr.4702]

Interestingly nothing on the relationship of vit D supplementation and immunity. Remember SARS Cov-2 studies that showed a signific effect of latitude and low vit D levels to inc mortality/morbidity? Why didn't health professionals mention these studies?

[@rrrlasse2]

Those were not randomized trials or with placebo, so they were only showing association and not cause/effect. There have been made some randomized ones too though, but I think that they are inconclusive because some show effect, others do not.

[@qkcmnt1242]

​@@rrrlasse2It depends on your determinative consistency with your supplementation. If you are willing to pursue better health, you will TAKE some risks, and range into higher quantities.

[@sandsleeper3124]

@@rrrlasse2I heard that when large numbers of people were dying of Covid, vitamin D levels were tested on people who died vs people who survived and those who died had significantly lower levels. That is association but it is good enough information for me to take higher a dose (7000 IU with K2). I take more if I get a cold. There is very likely no risk for taking this amount with K2.

[@devadattan]

I learned MORE FROM THE COMMENTS THAN A CORPORATE CAPTURED PHARMA DR

[@kazzicup]

Yes. She is lying through her teeth.

[@qkcmnt1242]

​@@kazzicup Honestly this doctor is OVERLY CAUTIOUS regarding vitamin D3. I had arterial plaque disintegrate like a ring in my lower arteries from my heart down 2 days ago, dropping my diastolic number by 20 points. At 65, I take about 8000 IUs per day, with 300 mcg of vitamin K2 and magnesium glycinate, having done so for about 2 months. Zinc too. Those were the key players, and avoiding EVERYTHING fried, cooked with seed oils, as this leads poisons to form the plaque in our bodies. Do exercise as well, for nothing takes the place of lifestyle for what it does in the body. Superior health, 💪🏼 everyone! 🎉❤🎉

[@MERRYJERRYL]

YES BINGO .....MUST ALWAYS READ ALL THE COMMENTS FOR THE "REAL TRUTH"!!!

[@ExtraordinaryLiving]

@@kazzicup Plus she's pushing statins! 😡 A soon as I heard that the medical establishments advocate NOT needing to test for Vitamin D levels *UNLESS or UNTIL YOU ARE CONFIRMED SICK* , my mind started going nuts because this is the most ridiculous thing I've ever heard! 😤

[@taiwanjohn]

I had a suspicion when I saw the title of this video, so I paused it while the pre-roll ad was still playing (which means I haven't even registered a "view" for this video yet, heehee!) so I could read some comments first. I'm happy to see that the bulk of the comments are critical of this video and supportive of Vitamin D!! ;-)

[@denniscerletti2244]

I would recommend when you take vita D3 to take vita K2 with it. I have read D3 alone would have the tendency to take calcium from the blood and put it into the soft tissue whereas K2 would help put the calcium into the bone.

[@deepost2604]

I began taking D-3 with K-2 after getting an osteopenia diagnosis. As you state, the K-2 is supposed to help deliver the calcium to the bones. Since Dexa scans are scheduled 2 years apart, it’s a long period before effectiveness can be determined.

[@AliceR27]

Yeah, glad I learned about this too. My A1c actually dropped from 5.4 to 5.0 after starting K2 MK-7 60mcg. Doctors dump 100,000 IU on patients, get the level up, and forget the rest. This study gave patients a whopping 25,000-40,000 IU rather than a steady 1000-5000 IU to maintain their D levels.

[@AliceR27]

​@@deepost2604With osteopenia, you should be getting DEXA yearly, not every 2 years, especially if you are on treatment.

[@thisandthat9710]

EXACTLY ! K2 with D is iey.

[@withidea]

I'm not entirely sure about this presentation, but I want to share my experience with vitamin D. Since I increased my vitamin D level to over 100 nmol/L, I haven't had a single cold. I used to get a week-long cold twice a year, which I thought was normal due to seasonal changes. This was six years ago. Before that, I visited my GP because I was constantly feeling tired. After running several tests, he recommended checking my vitamin D levels, which turned out to be 18 nmol/L at that time. I didn't know much about the importance of vitamin D back then, but now I aim to keep my level around 125 nmol/L and have it checked regularly. My mood swings improved dramatically as well. Vitamin D is more than just a vitamin; it's more like a pre-hormone that aids in hundreds, if not thousands, of functions in the body. It also acts as a natural sunblock, and I hardly get sunburned anymore (I avoid using chemical sunscreen products). Also, I never got COVID-19, even though most of my family and friends had it at least once (I did take the initial rounds of vaccines, though). All of this may or may not be related to vitamin D, but this is my experience, and for me, it is convincing enough. The research in this clip should be cited.

[@teresamexico309]

"You probably don't need to have levels checked" ...if any dr tells me that, I would run faster away from them.

[@Shadow-bs1iu]

😂

[@hieu350]

What are the real motives to talk people out of testing vitamin D levels? This is like what was said by that ADA : Do not test insulin ! Even a child knows the motives! What is "officially" said by "the authorities" is not always true and correct.

[@7774-o9w]

@@Shadow-bs1iu ABSOLUTELY RUN VERY VERY FAST LOL

[@tracysmith-yv5lt]

you probably should i have never had any due to having a routine operation in the 80s 4 decades ago. I normally get it from having a parathyoidectomy removing the parathyoids via kneck surgery gets me now im 50 how the hell did they miss it after having 2 c-sections. im low in calcium aswell has to be very low and they got it doubled before they found out could have died went up to 3.8 should be 2 normal people calcium is around 10.

[@teresamexico309]

​@@tracysmith-yv5lt I am sorry about it. Doctors might be well intentioned but many of them are not properly trained and they do not look out of "their box". A Vet might do a better diagnosis :) I do not have pets (I like animals to live in their natural environment and free) but when people take their pet to the vet, the first thing the vet ask is: What is he eating? and from that on the vet does his/her job. This video is a copy cat of one from the endocrinology society. On the other side there is an interesting video about vit D form a Japanese channel. I will try to find both links. Take care!.

[@Ernesto7608]

In this video there are basic, serious flaws that make it completely untrustworthy. WHERE does this idea come from that such an important substance as vitamin D should not be tested unless its value can cause a symptom??? IS this how medicine should be practiced ??? And the excuse is: because it burdens the medical practice! One more lab-work data among tens of others is so important? A second serious flaw is to dictate the DOSE of this vitamin to ingest, which has such a variable absorption rate!! This is PRECISELY the reason to test it.

[@lelandsmith2320]

Medicaide doctors who do nothing for their patients except milk the system. Let em go down hill and end up in a home so you don't have to see them in your office.

[@joanhyde1745]

I am older, and was encouraged by my doctor to take 6000 IU daily.

[@adelarsen9776]

You could safely take 10k of D3 per day. In fact, you could take 100k per day and it would only do you good. Try 6-8k per day and take 100 mcg of K2 with it.

[@STree42]

@@adelarsen9776 Do some research. Levels over 40 are associated with dying earlier. In multiple studies. There is a sweet spot to be in. Megadosing ain't it.

[@adelarsen9776]

@@STree42 If the study does not match the reality then the study is wrong. 10k of D3 per day is only a good thing.

[@STree42]

@@adelarsen9776 What does "match the reality" mean? If you don't believe in properly conducted studies, you're living in the 1600s.

[@adelarsen9776]

@@STree42 If the study does not match the reality we see then the study is wrong. Take for example all the studies that show that eating saturated fat gives you a heart attack. They are all 100% wrong because they're based off ideological epidemiology. I unblocked my arteries and got rid of CVD and T2D by eating only fatty red meat, salt and water for 12 months. I eat more animal fat than animal protein. That's all I eat. The reality is not the same as the studies. You see ? You might want to look into who funds studies and what agenda they have.

[@jameskantor0459]

Not checking Vitimin D3 levels is wrong! Say not to do testing is malpractice

[@ronladuke7235]

Almost every person that was hospitalized for covid 19 had very low levels of d3,why didn’t you even mention this. Wait till grandma falls and breaks her hip then test her for low d levels, probably a death sentence for grandma but that’s ok because you were following the ( standard of care guide lines). Who paid for these so called studies,maybe a pharmaceutical company?

[@kazoz3520]

??? Why would a pharmaceutical company promote the message found in these studies to not take high doses of Vitamin D, & that testing & supplementation in the general population is not necessary (unless with a deficiency), if it meant they would sell less products? Or is it that you are not aware that big pharma companies own a lot of subsidiary companies, of which sell these supplement products?

[@kazoz3520]

P.s, for bone fracture prevention & screening, it's more useful if grandma is scanned for bone mineral density than testing for vitamin D levels.

[@andre495]

​@@kazoz3520Big Pharma earns more on serious treatments then on supplements.....

[@DavidHenderson-n5m]

You have not said anything about vitamin K2 which is supposed to migrate calcium away from artery walls and into the bones. I take a vitamin K2-vitamin D combination for this reason. Question: lifeguards have had their vitamin D levels measured at 80-90 ng/mL - do they suffer any ill effects from too much sun and vitamin D ?

[@STree42]

We don't know. But we do know that levels that high are associated with overall higher mortality and CVD risk. It doesn't make the headlines, but if you actually read all of the studies, you'll see the clear trend that vitamin D levels are a U shaped curve. You don't want to be really low or really high.

[@lasal134]

Tank you for a very clear presentation of this study. It is so good to see real results, positive or negative, as you say; there is so much to learn and all information is important. And such controlled trials are the best!

[@peterpomponio1118]

Read the book, “The Miraculous Cure for and Prevention of All Diseases by Jeff T. Bowles” for another perspective of D3. This book was recommended by Dr. Eric Berg during his KZbin video on Vitamin D3.

[@JoeMicalizziMPC]

Sorry, really wanted to like this video but gave it a thumbs down because of the "Dr's" advice against testing for Vitamin D levels. My blood tests give me the results of all my vitamins and other facts that help my GP and me decide on how well I'm doing. Also, WTF is she doing quoting some BS study on Vitamin D and falling down. Who the heck is taking Vitamin D for that purpose???

[@ChadSharkeyNursePractitioner]

In the beginning of the Vitamin D craze, around 2000 to 2005, some of the data showed reduced falls in the geriatric population. As you can imagine, fall reduction is HUGE in this age group due to multiple injuries and especially the downward spiral that often follows a hip fracture in an elderly individual. Some felt the reduced falls with adequate Vitamin D levels was because of improved balance and other felt it was actually non traumatic fractures of the hip or fumur that caused the falls. The thought then was adequate Vitamin D levels reduced fractures in weak bones that happened spontaneous without trauma. Less spontaneous fractures with adequate Vit D and less falls. Given the recent large population research published in June 2024, thats not the case.

[@MikeG-js1jt]

@@ChadSharkeyNursePractitioner I dont believe falls were reduced at all, I think it only "appeared" that way, because mostly falls are only reported if something bad, like a FRACTURE happens as a result and I think people who had a history of higher levels of vitamin D had just as many falls but less rfractures, thereby seemingly less falls as there were less reports of those falls due to there being no or less fractures due to those falls.

[@bryanamspacher336]

​@MikeG-js1jt with that belief, it's hard to prove a negative. The finding around falls with fractures was that the falls were caused by the fractures in many situations.

[@slomo1716]

@@ChadSharkeyNursePractitioner I found the "falls" very interesting, because I am one of those older women who are seriously in danger IF I fall. I will not be able to get back up and I live alone. Great to hear some studies are being looked at for us who are in danger of falls. I have great bones and not fear of breaks, because I stay away from STATINS. I heard that the Vitamin D craze was because studies reflected cancer patients with Vitamin D deficiency, so the push was on.

[@ChadSharkeyNursePractitioner]

@@slomo1716 Thanks. Keep working on the leg strength and the balance and being safe!

[@laurie2218]

Dr. You need to cite your research. Many of us may like to read these studies ourselves.. Thank you!

[@charleslindsey6789]

She said, multiple times, that she posted links to the studies in the show notes.

[@STree42]

Best list of studies is at consumerlab.

[@BetterHealthWhileAging]

Yes, you can find the links to the research in the podcast show notes, here: betterhealthwhileaging.net/podcast/vitamin-d-best-dose-in-aging-2024/

[@thisandthat9710]

At the very least, read the study in the journal Alzheimer’s & Dementia Diagnosis, Assessment, & Disease Monitoring --2023 study of the impact of vitamin D on the development of dementia in nearly 12,500 older adults who participated in the National Alzheimer’s Coordinating Center. None of the participants had dementia at the start of the study. People who took vitamin D had a 40 % lower rate of dementia.. when they looked at only the women, it was almost a 50% lower rate. I'm flabbergasted you do not know this and other research. supporting vitamin D - and when combined with K2 the impact on cardiovascular disease protection is excellent. I give up. I don't know why you insist on posting "risks" of vitamin D. I follow the science.

[@markbloore9089]

What doses were they using? Knowing it can help is no help without dose info.

[@lynndietz476]

The studies cited did not seem to consider the benefits of Vitamin D3 taken with vitamin K2/MK-7 on a person's immunity system.

[@MrJaggg88]

It's essential to take K2 Mk7 with your D3 but the K2 must be the all-trans form and not CIS (synthetic) or combination

[@juliab6572]

​With all the propaganda and mis/disinformation,where does one go?@@MrJaggg88

[@AsanTole]

​​@@MrJaggg88Many thanks for that valuable piece of information concerning the distinction between the All-trans and CIS form of MK7. Even reputable supplement manufacturers don't seem to include this specification on their labels, which leaves consumers in the dark, doesn't it? Do you have any advice on how to obtain the full information on the chemistry? Maybe I'm missing something?

[@waltermagee2305]

Establishing adequate levels of vitamin D is difficult because there are many factors involved with what may be required for an individual. The only detriment I can see in high dose supplementation is the possible up or down regulation of cell surface receptors in response to vitamin D availability. To my knowledge, there are no studies observing this. I am not a big fan of " fall frequency" studies as I believe them to be useless. Also bone density studies lack the effect of increased exercise and related bone stress factors that enhance bone density over time. Focusing on one parameter in a complex picture of variable vitamin D levels is really not adequate in making claims on MDRs due to the numerous influences of factors that are different in each individual case. I think bi-annuai testing to establish basal levels of vitamin D and later observing effects of supplementation may be of benefit, rather than flying blind, making general assumptions about a population.

[@moff1]

Totally agree. Talk about simplifying as if D3 was alone and never interacting with body or environmental factors!

[@nigelreilly5029]

No mention of vitamin K2 ? I have been told this should be taken when supplementing with vitamin D3

[@bettyhappschatt3467]

I am working in an psychiatric outpatient clinic. 25% of patients are not vitamin D dedicient and there is evidence, that the deficiency can contribute to low mood so any psychiatric symptom is a reason to measure vitamin D.

[@MiroBG359]

psych drugs will deplete B and D vitamins, and who knows what else

[@eduardoescarticarbonell9201]

Hi, doc Thanks for your video. I am a spanish gastroenterologist 74 years old , now retired. Very interesting, clear, and didactic. Gongratulations!

[@dougtexas9075]

During the COVID period, it was recommended that I take 5,000 units a day to boost the immune system. Plus, zinc.

[@BRChristiansen184h]

A few months into the covid 'pandenic' in my country I saw an announcement in the pharmacy saying: "From now on anybody buying vitamin D3 with a MD's prescription will not get this purchase refunded." It always could be refunded before covid, but suddenly not anymore. I guess the politicians knew or were worried that D3 might be effective and wanted to discourage those with a tight purse from buying it.

[@nancyvickers2814]

Really rich that the Endocrine Society would rather have you not test D levels until you develop symptoms for issues that could be prevented by checking D levels regularly. Once again promoting the “sick” model of medicine rather than the preventative model.

[@aprilek6003]

I am shocked to hear a physician saying this. Of course we should check vitamin D levels especially in the older population. How can you not know/understand how important this hormone is in health. Please everyone have your levels checked and get them between 50-80 ng/ml your immune system will thank you

[@selahchunem8447]

I'm glad you refer to the fact that vitamin D is a hormone. I was a little disappointed she didn't. She did however indicate it was a fat-soluble.

[@elbowroom3663]

Suggest that you touch base with an actual vitamin D investigator for a better understanding of this arena. Dr. Bruce Hollis Medical University of South Carolina.

[@binglamb2176]

I may have missed it but I don't think you mentioned whether or not these trials included vitamin K2 with the dose of Vitamin D. This is a crucial factor along with magnesium when determining the effectiveness of vitamin D.

[@Ernesto7608]

How about all the people who see your video and decide not to get tested because they are asymptomatic, yet are deficient in vitamin D and are progressing towards serious symptoms. Will you take responsibility?

[@marioct130]

So, don't test for vitamin d deficiency until after a person shows signs of osteoporosis?

[@marksanbourne3064]

I almost fell over laughing on this one. My dad had osteoporosis in the late 1970s, 80s, 90s and was a Guinea pig at Mass General Hospital for over 20 years. If he were still alive, he would give this mouthpiece a piece of his mind. It’s too late for many who get osteoporosis early in life. I tested myself 25 years ago at 45 just in case. This piece of garbage is not even close to being viable advice. It should be pulled from the internet. Plus … it is totally convoluted at most every step of the presentation. Junque! As a friend says.

[@thetruth9974]

@@marksanbourne3064 Exactly. If you deny people testing for Vitamin D and provide disinformation and biased data that persistently tries to reject the evidence calling for the need for various supplements and good nutrition, you are moving away from prevention of chronic diseases and effectively promoting their initiation, development and progressive advancement, thereby enriching the coffers of the Medical Industrial Complex (MIC). The MIC and corporate banksters who finance them demand an ever increasing return on their monies in perpetuity not by making people healthy but by reinforcing public health policies that have been established to make people more unhealthy and to find all sorts of ways to transition acute, short-term illnesses into chronic, debilitating and incurable diseases.

[@tfoxen7518]

You can have an excellent consistency of Vitamin D levels before an osteoporosis diagnosis. Many small framed individuals and fitness enthusiasts can fall into this category, also.

[@marksanbourne3064]

Well, I’m hardly small framed. I’ve gone only from 70..25” to 68.75” in 70 yrs. Better than my dad who was not small framed but died that way from osteoporosis. He went from 69.5” to 63” and 165 to 135 lbs at around 70. He ate poorly as a kid as his dad deserted the family. As far as me losing a 1.5”… well, I’ve played harder than most people for close to 50 years. Logged 10k+ miles long distance hiking with rarely a pack weight under 50 lbs … 60-65 mostly… and 70-80 occasionally for weeks. Slept in the woods for 2-3 years. Logged another 10k+ miles running while in the navy over 6 years. Day hikes and cycling for years. Hard manual work for 25 years including some farming. So, Losing 1.5” is not really a surprise. I still have the ability to put 2” on my chest every spring when I open water swim over past 10+ years. I work outside often for hours in shorts for 6 months. Less in other months. So I really don’t worry about Vit D but I use supplements for other items that I take… just in case as it has a hormonal affect as well.

[@marksanbourne3064]

Well, I’m hardly small framed. I’ve gone only from 70..25” to 68.75” in 70 yrs. Better than my dad who was not small framed but died that way from osteoporosis. He went from 69.5” to 63” and 165 to 135 lbs at around 70. He ate poorly as a kid as his dad deserted the family. As far as me losing a 1.5”… well, I’ve played harder than most people for close to 50 years. Logged 10k+ miles long distance hiking with rarely a pack weight under 50 lbs … 60-65 mostly… and 70-80 occasionally for weeks. Slept in the woods for 2-3 years. Logged another 10k+ miles running while in the navy over 6 years. Day hikes and cycling for years. Hard manual work for 25 years including some farming. So, Losing 1.5” is not really a surprise. I still have the ability to put 2” on my chest every spring when I open water swim over past 10+ years. I work outside often for hours in shorts for 6 months. Less in other months. So I really don’t worry about Vit D but I use supplements for other items that I take… just in case as it has a hormonal affect as well.

[@Jessica-kk1cz]

This thumbnail video title entirely irresponsible and hurtful from a public health standpoint given the epidemic rate of Vitamin D deficiency in this country. Shame on you. 😡

[@TheVafa95]

Thanks for the information. Their advise is to wait for symptoms like fractures and then test for vitamin D. 😂😂😂 Ignorance is bliss.

[@johngoh767]

Dr. Leslie Kernisan, very informative, I am 87 years old and I take Vitamin D3 [sunshine vitamin] + vitamin K2 combine. One capsule contains 10,000 IU [250mcg] + K2 100 mcg [as Mk7]. I take 3 capsules daily [morning, lunch and dinner] since 2023. Many experts consider the upper limit amount to 100,000 IU has not provide any sign of toxicity. Your comment please.

[@jrstf]

Dr Kernisan is wrong, you should test your blood levels of vitamin D.

[@larsnystrom6698]

I myself need 10'000 IU to get to optimal blood levels of vitamin D. I wouldn't take more than that without measuring the blood level. (After taking it for 3 months) I consider 60 ng/ml, or slightly above, as optimal, and more than 100 ng/ml as unnecessary high. Those levels are medical treatment, and not for us with no special needs.

[@deleukstethuis]

@@larsnystrom6698I have 205. I feel wonderful take 10.000 once a day. Woman 70 years

[@annettebaker1896]

I would ask who funded the studies. 😜

[@STree42]

You think corps are funding studies on Vitamin D?

[@CW-nk2vd]

Many years ago, my primary care doctor at the time had me taking vitamin D 50,000 units. After taking this dosage for a while, I became concerned ask my doctor to put in a request for me to have my vitamin D level checked, and he did. I found out that my vitamin D level was way above the upper limit. I asked Dr. Peter DeRussy what kind of potential Harm will this overdose do to me, and he told me he did not. That was my last appointment with Dr. DeRussy, and I did my own personal research. I found out that overdosing with vitamin D can cause Damage to my heart.

[@qkcmnt1242]

Were you also taking vitamin K2, zinc, magnesium glycinate and any other supplements? A careful balance of vital nutrients could make a WORLD of difference.

[@CW-nk2vd]

@ I was not taking those other supplements, consistent at that time.

[@annan8961]

I am 70, taking D3 20.000 IU, K2, Magnesium, and zinc every single day helped my osteoporosis and extreme back pain

[@Dr_Boult]

Without a discussion of natural production of vitamin from the sun, the amount of supplementation is not well founded.

[@WellnessWhisper-u7m]

New knowledge acquired, thank you very much !

[@LongNguyen-ij1hx]

Thank you very much for your wonderful information. Best wishes to you and your family!

[@donnaallgaier-lamberti3933]

I find this VERY interesting. I'm age 73 and have Autoimmune Hashimoto's. I see an Integrative Physician and my physician wants my Vitamin D to be between 80 and 100 on my blood labs due to my Hashimoto's thyroid issue, osteoprosis and osteopenia and a hiatial hernia. I am taking 10,000 IU of Vitamin D plus L 2 per day in order to keep my D at 80. (When I go down to 5,000 per day my levels drops to just 30.) When I see a traditional western medicine physician is always ALARMED at my high levels. However I feel best at 80 my brain and memory is excellent for my age AND more importantly I have restructured my bone mass by 6% as week. I'd be very interested in what you think?

[@adelarsen9776]

Carnivore Diet. Dr Ken Berry.

[@robertdyson4216]

I guess on this basis I take too much vitamin D. I am mid-80s. I have been taking D3, K2, Mg for some years. The D3 varies from 4,000 to 10,000 IU a day depending on time of the year. I have not had a significant respiratory infection for years. The most amazing thing of note is that I used to have 'cold sores' from time to time that I treated with Zovirax. Ever since getting my serum D3 up about 50 ng/mL they no longer appear. I don’t take any medications, I have no joint problems, I still play piano with accuracy and speed, etc. I will stick with having too much.

[@ericac7870]

It was my rheumatologist who recommended taking 2000 IUs of Vitamin D daily, as I have osteoarthritis. I just double checked, and it does look like the idea is legit. I can't post links, but I found a paper from 2023 called "Relationship between 25-hydroxy vitamin D and knee osteoarthritis: a systematic review and meta-analysis of randomized controlled trials" and it does seem to confirm that it can keep OA from progressing as quickly. So I will keep doing what I am doing, which is skipping it on days I eat fatty fish. Oddly, my last Labcorp report (2022) gives the reference interval as 30-100 ng/mL. I am at 37.4, and that made me think I was at the lower edge of normal. But seeing your guidelines I guess I'm doing just fine.

[@geonerd]

I started taking ~8K a day, plus twice a week deliberate sunbathing, in 2020 in an attempt to not die from the virus. Expected nothing, but woke up about a month later to a pain-free hip joint for the first time in years. Turns out VD is indeed an anti-inflammatory, and it can have a significant effect on both RA and also OA pain. My aching back and torn-up plantar area also improved radically. I literally went from limping ~1/4 mile at a time to walking indefinite distances pain free. Nothing else in my life, diet, nutritional intake, etc. changed. And I've done very deliberate tests where I stop taking D. Within about 10 days, I start to experience minor pain in the joints. A week of ~15K a day jump starts my D levels back to an effective range and the pain vanishes. Try bumping your dose, and target ~70ng. The thing is, our immune cells lack a cell-surface receptor found on bone, kidney, and other 'classic' D tissue. The immune cells rely on passive diffusion of D across the cell wall, and this requires higher blood/serum levels. Many immunologists suggest 60ng or better. Give it a try! ;)

[@Person-mh6xq]

@@geonerdexcellent news for you! I recently started taking 10,000 iu daily (with 200 k2 in the same pill) and striving for 60-70. I’d been stuck in the 30-40 range but recently hit 52.

[@STree42]

37 is fine. There is actually no evidence that levels > 30 cause any benefit, so the lab reference ranges are quite curious and not evidence based.

[@henry6451]

She lost me at the recommendation not to check levels. Ideal way to ensure Health problems.

[@fernandorubinski9526]

to call 2000 iu/day a high dosage is ridiculous. That number is far below what the body makes by itself in less than half an hour of full sun exposure at noon

[@Jeffs60]

The main ingredient in d-CON rat poison is the same ingredient Cholecalciferol they put in synthetic Vitamin D pills. The sun is different and you can't overdose on the real thing only get a sunburn but that is a different topic.

[@blvany]

I wish a study had been done on the effects of Vitamin D on the immune system. I was under the impression that Vitamin D supported immune system functioning and that people with low Vitamin D levels fared much worse during the Covid-19 pandemic for that reason. I currently take an average of 3900 IU daily (supported on alternate days with 180 mcg of Vitamin K2), and my current Vitamin D level is in the low 50s (measured in ng/ml) which is above the range you consider optimal (20-40 ng/ml) but not by a large margin. I am considering cutting back my current dosage to 2900 IU daily and seeing what happens to my Vitamin D level. Also, I see no reason why an older adult should have to wait until they get sick or develop symptoms before they get their Vitamin D level checked. One or two initial baseline measurements might quickly determine if an older person is below 20 ng/ml and suggest the need for Vitamin D supplementation to prevent development of adverse symptoms.

[@henry6451]

The tests described are irrelevant or even deceitful since they are so far away from commonly suggested levels of vitamin D. They used very low dosages at very low blood levels Despite this there was some indication of immune function improvement. Try using daily 5000-10000 per day with blood levels above 60. Those are at the low end of what seems to actually be effective.

[@keithrogers9741]

What? Older people should not ck their Vit D levels regularly particularly, if they don't show signs/symptoms of a deficiency. By the time you show symptoms a patient has been deficient for awhile. By the time lab deficiency results come in you and may suffer the consequences which is hard to get back being older. The RDA and studies quoted here are as usual just enough to prevent the symptoms of the disease and not the amount to be healthy

[@esecallum]

Conflict of Interest Disclosures: Dr Chen reported receiving grants from Kowa, AstraZeneca, and Ipsen outside the submitted work. Dr Fontana reported receiving grants from Takeda Pharmaceutical Company and Kezar Life Sciences outside the submitted work. No other disclosures were reported.

[@kodowdus]

As someone who has done epidemiological research on the "vitamin D" status of nursing home residents, I would submit that the term itself is a misnomer, given that it is a prohormone and that its presence in food sources (like that of phytoestrogens) is incidental worldwide. On that basis, I would also submit that the use of "vitamin D (cholecalciferol) supplements" should be referred to as "vitamin D (cholecalciferol) replacement" and therefore as a pharmacological intervention. Conversely, the notion that "normal" levels of serum 25-hydroxy vitamin D (AKA 25-hydroxycholecalciferol or calcidiol) should be based on levels in people living with post-industrial levels of sunlight exposure doesn't seem logical on the face of it. Also, intervention studies suggesting the benefit of "vitamin D" on non-skeletal outcomes such as immune response (for example, European studies suggesting a beneficial impact against morbidity from COVID-19) are commonly done using 25-hydroxycholecalciferol (i.e., the form of "vitamin D" normally derived by the liver from the cholecalciferol that is normally produced and released into the bloodstream by human skin upon exposure to sunlight) rather than oral cholecalciferol ("vitamin D") replacement.

[@thetruth9974]

I suppose when people are ill, and during supposed pandemics, it would be more efficient to use 25 hydroxy D3 or 1,25 dihydroxy D3 (active D3) rather than D3 (Cholecalciferol) alone as the former molecules could generate much faster beneficial clinical effects. Otherwise, the body would be required to convert Cholecalciferol into the active D3 via two steps and that would waste time. In "medical emergencies", the best form would be the most active form as the goal is to minimise risks and maximise benefits to patients as quickly as possible. In a person with poorly or non- functioning liver and kidneys , supplementation with Cholecalciferol (D3) would generate a lower yield of active D3 (1,25 dihydroxy D3) with fewer positive and meaningful clinical effects. In individuals with healthy liver and kidneys, supplementing with D3 (Cholecalciferol) should not be an issue as the tissues would have no problem converting it into its storage form (25 Hydroxy Cholecalciferol) as well as the active D3. Not measuring Vitamin D3 levels and neglecting or minimising its importance and role not only in maintaining optimal health as well as reducing the incidence of various forms of chronic diseases are tantamount to ignorance, disinformation and medical negligence.

[@kodowdus]

@@thetruth9974 I can't argue with the value of measuring serum calcidiol levels in general, but I don't think we know enough to assert that oral ingestion of cholecalciferol (never mind ergocalciferol, which is the analog typically used to "fortify" cow milk alternatives with "vitamin D") has an identical physiological impact to endogenous synthesis from 7-dehydrocholesterol and direct release into the bloodstream by the human skin (which is distinguished by a self-regulation mechanism among other things).

[@GerardSerlin]

“High dose “ is a red herring - rather than focusing on the dosage focus on the actual vitamin D level of the individual, which can vary significantly from individual to individual- irrespective of dosage or sun exposure, otherwise your not really giving sound advice .

[@clevelog]

Excellent! Beautiful presentation -clear enough for everyone to understand and with in depth detail to edify an acute care NP like me. Thank you!

[@dominicbere2411]

I'm really glad that this is getting out. Vitamin D orally is really dangerous, in any amount. If I take any at all, it causes my haemorrhoids to bleed, showing how blood thinning it is. Blood thinning like this could easily cause mini-strokes, where capillaries in the brain leak because the blood is too thin. Studies have shown that mini-strokes are extremely common, and mostly go unnoticed either by the individuals having them, or their carers. Vitamin D induces a deficiency of vitamin K, which is needed for blood clotting. Hence taking vitamin D on its own is dangerously blood thinning. Having noted that vitamin D supplementation on its own is dangerous, studies also show that vitamin D in combination with vitamin K, vitamin A and magnesium is preventative of cardiovascular disease, bone disease etc.. Much more could be said on the vitamin-mineral interactions with vitamin D than in the section copied below from Deanna Minich's wonderful chart outlining them, but this isn't the place to go into more detail. Each bullet point, in the original document, has an embedded hyperlink to supporting research. Synergistic Nutrients Vitamin K • Optimal levels of vitamin K prevents some of the problems of excess vitamin D and leads to better outcomes. • Sufficient levels of vitamins D and K lead to reduced risk of hip fractures and an increase in BMD and other markers of bone health. • Sufficient vitamin K and D also improves insulin levels and blood pressure while reducing the risk of atherosclerosis. Calcium • Vitamin D increases calcium absorption. • Along with vitamin K, supplementing with calcium and vitamin D leads to improved bone, heart, and metabolic health. • Calcium and vitamin D also work synergistically for skeletal muscle function. • Co-supplementation of vitamin D and calcium led to an improved response to children with rickets. Magnesium • Supplementing with vitamin D improves serum levels of magnesium especially in obese individuals. • Magnesium is a cofactor for the biosynthesis, transport, and activation of vitamin D. • Supplementing with magnesium improves vitamin D levels. • Deficiency in both vitamin D and magnesium increase risk for cardiovascular disease, diabetes, metabolic disease, and skeletal disorders. Selenium • Supplementing with vitamin D improves serum levels of selenium. Antagonistic Nutrients Vitamin A • High levels of vitamin A decrease vitamin D uptake by 30 percent. Vitamin E • Medium and high levels of vitamin E significantly reduce vitamin D uptake by 15 percent and 17 percent respectively.

[@jrstf]

My doctor ordered me to take blood thinners, which I have not been doing. Sounds like I should boost my vitamin D intake above the current 2000 IU/day. Seems our nutritional requirements are specific to the individual. You do make a really good point, Dr Kernisan is really misleading people with this video. The situation is far more complex then she lets on, and what she claims to be factual will clearly harm many people.

[@coangajc]

Oh ! I’m very happy that you’re researching try to find the good level intake for vitamin D ..! But for the high level as not actually studies what it wrong or good for people have big diseases like cancer ! Thanks a lot Dr CJc 😊

[@ancabostinariu6550]

Taking vit D but not exercising in elderly for sure will not make a difference in cognition or muscle strength.

[@MaryMchugh-y8b]

My vit D very very low when diagnosed with MS, supplement 2,400 daily brought it to normal . Being treated for the MS

[@Tommy_007]

7 months ago I was diagnosed with ulcerative colitis. I have (of course) studied this inflammatory disease intensively, including the benefits of vitamin D supplement. I got absolutely no information about diet or supplements from my doctors, not even after I asked for it. Only a nurse recommended vitamin D.

[@Irene-im8xi]

Nothing is mentioned about the need for adequate magnesium and the ability to absorb vit b1that is needed in order to absorb and use vit d! Could it be that people, especially older people, with a diet low in vit d could also have diets low in vit b1 and magnesium along with a host of other nutrients; either through poor diet or poor absorption!? As a non-medical person, hearing about research that looks at one nutritional substance in isolation from the rest of one's dietary requirements, and possible deficiencies, seems stupid. It's not just diet quality which is ignored either but the person's overall health, including their mental state, their living conditions and levels of physical activity. All these aspects of one's life have an impact on health and ought to be asessed by researchers in a holistic way instead of just doing single nutrient studies all the time. For all we know perhaps drug companies, or those with allegiance to them, fund research grants to further their own ends rather than to further knowledge. I am reluctant to trust the medical community as the sole repository of knowledge or wisdom so long as that wisdom depends on money.

[@d3wonder]

I agree.

[@JacyJ1]

What about the effect of vitamin D3 + K2 on bone absorption of calcium?

[@doctorrobert60]

Like others that have commented I take Vitamin D 5,000/day without any issues but also take K2 with it. I asked my primary MD to run Vitamin D level and was 64 ng/ml with 20-100 being reference range. I walk every day outside, without a shirt when weather is decent. I tan readily and the more pigment in the skin the less Vitamin D is produced. For that many populations with dark skin have usually low levels of Vitamin D. Vitamin D is critical in normal immune function and when fighting an infection Vitamin D is consumed and needs to be replenished. I am retired FP doctor and when talking to a friend who is an oncologist he told me healthy levels are critical when treating cancer. If levels are low the chemotherapy is not effective.

[@rredding]

So many great reactions here! OK, let's throw in a few cents. Blood samples of hunter gatherers : D3 levels around 70 ng/ml. Safe, adequate intake in general l:more than 4000 IU (100 mcg). Seniors, obese, dark skin: take more. I have a D3 issue: my genes don't allow for proper D3 processing. I take 10.000 IU daily and have a blood serum concentration of 66 ng/ml. Always combine D3 intake with magnesium (bisglycinate) *AND at least 100 mcg vitamin vitamin K2 (MK7 form) per day*. I also have a few mg BORON. This promotes free D3 and helps me with my arthritis.

[@nd7915]

Sorry, I have to speak out here: - Daily intake is irrelevant, because everybody absorbs differently. Most people do well with 5000 IU daily. - If your levels are extremely low (

[@bingbangboom1239]

One excellent study says: Conclusion: "increasing levels in serum 25(OH)D were independently associated with a decreased risk of all-cause and cause-specific mortality. These findings suggest that elevated serum 25(OH)D concentration benefits CVD patients with vitamin D deficiency." And one more thing worth mentioning: the benefits are huge and consistent and correlates well with a vast number of other studies. (Source: Association of Serum 25-Hydroxyvitamin D Concentrations With All-Cause and Cause-Specific Mortality Among Adult Patients With Existing Cardiovascular Disease. Only 11 pages and not too hard to read article, with some very informative graph in it.)

[@bhut1571]

Thanks. Many folk including meself got on the D bandwagon because as the sun marched south, there was a progressive increase in Covid. I was amongst them. Wintering on 3000 IU (November to March in Northern Ontario) resulted in about 130 nmol/L on a Spring test for a chap who's almost 80. One has to pay for the test here in Ontario unless there are indicators of osteoporoses etc. But it was a good investment because now I've dropped the winter dose to 2000 IU's. Researchers suspected D might be helpful because more sunlight was but it turned out not to be the case. It's speculated that it's the IR rather than the UV portion of the spectrum that may be of benefit for respiratory illness. It doesn't hurt to get a test done say every decade at $40 Cdn a shot. Everyone is different.

[@cindyteevens]

Thank you :). I began taking 10,000 IU a day, at the advice of an osteopath, and shortly after began feeling strangely dizzy, like drugged dizzy. So I quit the D, and felt better in a day. I like the take some occasionally then stop.

[@jonnyde]

FWIW I looked at the bone density/D3 study done in Calgary that you mentioned. To my horror I could not find one mention of K2 or MK7 being part of the study where D3 and calcium were being studied to see effects of supplementation on bone density of men and women 55 to 75. Over 300 individuals were in the study. I would suggest a followup to see how many of those individuals had heart issues after the study. The problem is (from studies found elsewhere), without adding K2 MK-7 to the D3, the added calcium is not going to bone: the calcium is likely locating to the heart and causes complications in that muscle. I am angry that my country has such poor regard for good science. I have to wonder if this was done purposely, for the benefit of some pharma pill push in the future..

[@MaxAmerica.Freedom]

I took high doses of vitamin D , 20,000 IU for my asthma. Along with astragalus, the asthma was basically gone. I only had asthma when eating certain cheeses and riding bicycles. After about 3 months, I only took astragalus as needed. I continued high doses of D, but after 3 years, I became nervous, paranoid, and very irritable. It increased over time. I stopped taking D completely. After a month, I felt better. I don't care about tests. Everyone is different. I know what works for me.

[@C0nstellati0ns]

I know of someone taking a liquid vitamin D supplement that was 10 times too strong (production error), at 800 mcg / 32000 IU per. drop, and took many many drops. This person nearly died from hypercalcemia / kidney failure, and spent weeks in dialysis at the hospital.

[@DavidLGreen-yw1wg]

Was she taking the co-factors - K2, Magnesium, Zinc? You cannot take D alone. And you cannot do a valid study, either!

[@sarah2go]

Vitamin D at 5000 iu fine if you add 200 mcg of vitamin k2. Also completely inaccurate and misleading regarding statins and longevity benefits.

[@KarlBunker]

*Citation needed. -- Or are we just supposed to take your word for it?

[@BRChristiansen184h]

Where did the vitamin D3 come from in these trials? Was it extracted from food or did these trials use synthetic vitamin D? I think this is important because synthetic vitamin D might not be so readily absorbed in comparison with the natural version. In addition I guess it makes a difference if one absorbs Vitamin D from the ultraviolet radiation of the sun compared to oral absorption??

[@simpleshoes]

Are you an MD? A registered dietician? A biologist? What qualifies you to make these remarks/opinions.?

[@joanhyde1745]

You are talking about how much to take daily, and you are correct, however the doctor is talking about blood levels.

[@BRChristiansen184h]

@@simpleshoes Who are you talking to? You should add name in order that we know...

[@diannefitzmaurice9813]

What nonsense !. At 2000 IU nothing much would show up. Studies rarely advocate adequate amounts. Since I have been taking Vit D3 with Mag and magnesium with it is critical because Vit D depletes mag everything changed for me. So 100 mgs of mag is necessary for every 1000IU of D3. I suspect nothing showed up in the studies because the study did not include Magnesium with the D3 . "'A little bit of harm !!" "Seems"?? Come on ! Your conclusions are simply not valid because you have some false premises in your argument . And it looks like you have cherry picked your studies. Aside from the mag issue, you leave out the most important issue and that is where you live. In northern climates we need supplementation because we have 6+ months of winter. Start with a test on amounts (It is ridiculous to suggest that the levels should not be checked )!!!. We should be aiming for OPTIMAL levels not just over deficient levels . 'Average' is a wrong way look way to look at amounts. It should be optimal. And from research that is between 100 and 150 nms . Your conclusions remind me of the years we were told not to eat butter and now it is found to be critical for C15 . Check your facts again and pick different studies. 4000 IU is minimal and 5000IU is even better when you live in a cold climate.

[@tigranavemian803]

Thank you very much! I learn a lot.

[@cameronsterls7983]

Absolute insane blanket recommendation to not test.

[@territowner8350]

The term vitamin D is not the correct term. This is misleading to people. D2 is different than D3. So far, you haven't mentioned "D3 and K2". Just taking D3 without K2 is dangerous. The research using 2,000 iu a day used an extremely low dosage amount. What did 10,000 iu a day show? And using Zinc, and Magnesium to optimum levels? How many minutes of sun a day does it take to get 2,000 iu? Maybe you should be suggesting that people get more sun. I am disappointed in your video because you are not using correct terminology and recommendations for taking vitamin K2 with D3. The K2 moves the calcium to the right places in the body instead of allowing just D3 to cause arthritis, and frozen shoulder, etc. build up of calcium where it should not be. You are in Big Pharma's pocket.

[@garyssimo]

Ferrittowner....you saved me some typing! was about to mention the same thing! D2?D3? WHICH ONE IS SHE TALKING ABOUT? Keep your levels over 70 and get tested! Mds want us $ick. Go see a functional medicine MD yes yes yes! Also take K2 mk7 want male breasts? Take statins cause youll be low T. Why? testosterone is made from cholesterol which does not cause heart disease. Its trying to patch up endothelial damage etc etc. She says be!ow 20 is low D. total nonesense!!!

[@garyssimo]

So a level of 31 is fine? Ye$ fine for the medical industry with all our low D sicknesses. Get tested!!!! Its a $25 or so test if you have no insurance. All im seeing in my research is keep levels over 50. Many Functional MDs in the know keep theirs at 100 nanagrams per deciliter. 20-30 is critically low.

[@PhilinWaterloo]

Cardiologist Dr William Davis would have issues with conclusions you have drawn with D3 and atherosclerosis. With al low carb lifestyle, D3, magnesium, iodine, and Omega 3, he has reversed plaque scores in thousands of patients. Me being one of those patients. With standard of care/statins , this cannot be done

[@Pierre-vn5rh]

Excellente présentation! Merci!❤ Cela éclaircit l'importance de la vitamine D3. C'est claire qu'il faut prendre cette vitamine durant l'hiver et durant l'été de profiter du soleil. ✌️✌️☮️☮️❤️❤️

[@ioloapgwynn235]

Many RCT trials have been discredited as being inappropriate in this context - because baseline variabilities are too great. Exposing the skin to UVB radiation for one hour, under conditions similar to that available from summer noon sunshine in temperate regions, will easily provide a 20,000 IU dose of D3. We evolved for most of history under such conditions.

[@michaelRthoughts]

Excellent point about variables. Medical study design eliminates variables that are important to consider. Also, the baseline of the general population may describe a general stateof disease. Eg Metabolic disease is the norm. Makes you wonder hiw smart dictors really are.

[@smae433]

Thank you for your work.

[@dalequale9365]

Thank you Dr. One less thing to worry about. My vitamin D level has been 20 ng consistently on my annual VA blood work. I'm 69 and eat low carb paleo and 🏋 and HIIT. No symptoms, no Rxs. How I FEEL each day is my North 🌟. 💪🙏

[@jrstf]

20 ng is wonderful, but if things somehow go bad and you get an infection, your immune system will use up vitamin D to fight the infection, thus lowering your blood level. You may well find the level drops too low to effectively fight infections, and it takes a couple of weeks for vitamin D supplements to take effect so it won't work to start after you get an infection. You could take Calcifediol to rapidly increase vitamin D levels but you'd have to go to Italy for that, I don't believe the US permits such usage. That is why 40 ng/ml is recommended, it gives you a lot of margin in case things go poorly for you.

[@peternolan4107]

A fifteen years ago, a doctor recommended I take 4000-6000 IUs of vitamin D a day. I hope I have not damaged myself given that bad advice! Thank you, Dr. Kernisan for once again being the voice of reason.

[@kathleenconnolly5608]

This was an excellent overview. Than you.

[@MrJohnnyseven]

Funny my father well over 80....takes 4 times the "recommended" amount along with K2 and magnesium...and he is fitter than most 50 year olds...walks 10 miles a day as well as going to the gym to row every day....he has NO brittle bone. Maybe he should take less so he can become a feeble 80 year old....

[@garyweglarz]

I'll be 73 next month and I have been taking 8,000 units a day for about 6 years now. My recent yearly physical showed my Vit D, 25-Hydorxy blood level was 122 and my physician was concerned and thought that too high, so I'm cutting my daily dose in half for a couple of months just to see how that impacts my levels on a new blood test. However, I haven't had a respiratory infection in five years - after many years of suffering through regular seasonal colds and flu. Additionally, pretty much everyone I know either has the "C" virus or just got over the "C" virus for the umpteenth time. So in the end I'll put my trust my own experience over "government studies" and "physician opinions" - any day of the week. Just saying.

[@agelessageing]

Extremely informative video. Thank you, Doctor for making it so simple and understandable.

[@quakerorts]

I'm disappointed that you didn't address flu prevention and other immune issues.

[@bingbangboom1239]

Dr Kernisan's oppinion is identical to the pharmaceutical lobby's. Contrary to this, medical literature is awash with vast number of studies demonstrating Vitamin D's HIGHLY(!) beneficial effects. However, we can devide Vitamin D studies into two groups, big pharma funded and non financially interested parties funded. Where's big pharma funded studies invariably produce negative or indifferent results, financially non interested parties produce consistantly positive outcomes. Money seems to control "scientific" outcomes.

[@Lateawake1000]

I was very interested in watching this video. Most disappointing. No links to research. Can’t determine who funded research. Think I will stay on my higher dose WITH K2 which you failed to mention. My traces are based on research that I can verify. Thanks anyway.

[@BetterHealthWhileAging]

There are links to the research I cite on the related podcast show notes page, which is here: betterhealthwhileaging.net/podcast/vitamin-d-best-dose-in-aging-2024/

[@Whatizzit]

Thank you for this rational and clear presentation on vitamin D.

[@merlinaweaver8152]

From studies I have read it is always counterproductive to give single bolus doses of vitamin D only once a month as after a few days you crash into a low. Also she failed to mention magnesium, which is needed to make D work, or K2 that is needed to put calcium in the bone. A very disappointing video.

[@oldscribe6153]

There is still fog around the vast gap between 'normal' and 'optimal'. It can only be assessed with a Vit D3 (25 hydroxy vitamin D) patient by patient. You must also monitor Vit A along with D3. It is also important to assess whether K2 is a good idea to take with D3. An individual health profile for each patient, including the BMI is also indicated to arrive at the correct 'optimal' dose.

[@seascape35]

Not checking vitamin D levels reminds me on how, for a time, the National (U.S) Preventative Task Force discouraged checking PSA for prostate levels for ALL men. Then many more men started popping into urology offices with advanced prostate cancer. Finally, the Board reversed itself and started recommended checking levels again for some men. Believe me, I know the PSA test is a poor test. But my point is that sometimes Authorities underestimate the need for screening.

[@harryfoster6374]

Hello, I am 87years old and Have been taking Vitamin D7 for well over a year, started with 1000IU as I became more educated on the benefits I took 2000iu for a while, then I learned about K2 and the fact it stopped calcium build up in the blood and other body tissue, I have now been taking a one 20,000 IU pill weekly, and a K2 every day for some months, Last week after my yearly check up with blood test, I asked the doctor what my D7 level was ? her reply was 88, I have read a good days sunbathing can allow us to absorb 25,000 IU's with the benefit of the corresponding natural calcifediol. The difference of K1 & k2- k1 from food K2 from Lanolin ( Yes sheep get sunburnt) and it lasts longer in the Body. .both do the same job .be well folks

[@luiswhatshisname7667]

Not statistical significance does not mean that there are no differences but that the experiment could not detect them under the conditions of the experiment. One can always design an experiment that is weak enough to come out with ¨no significant differences ¨ for any treatment or on a population that is healthy enough already or eating enough enriched foods already that no differences can be measured.

[@robinq5511]

Were there any studies in which Vit K2 (MK-7) was included?