Is Coffee Good for You?

Click my trainwell (formerly CoPilot) link go.trainwell.net/JamesHoffman... to get 14 days FREE with your own expert personal trainer!
My previous video on caffeine: • Caffeine: Explained
Chapters:
0:00 Intro
1:13 All Cause Mortality
3:12 CHD/CVD
3:30 Performance
5:11 CoPilot
6:33 Sleep
8:28 Impact Of Brewing Method
10:14 The Gut/The Microbiome
11:57 GERD (Reflux)
13:09 Cognition
13:49 Cancer
15:24 Mycotoxins
16:45 Outro/Wrap Up
Below is a list of papers that we look at and referenced in the video. Many of them are behind paywalls, and so with each paper I've included the DOI reference number. You can use these in search engines, but I obviously wouldn't recommend Sci Hub because that would let you view them for free instead of paying...
Because of KZbin's character limit for description boxes, I can't list them all here below but you can see the full list here: pastebin.com/QfmE1JsV
Links:
Patreon: / jameshoffmann
Limited Edition Merch: geni.us/TensHundredsThousands
Instagram: / jimseven
Twitter: / jimseven
My Books:
How to Make The Best Coffee At Home*: geni.us/howtomakethebestcoffee
The World Atlas of Coffee*: geni.us/atlasofcoffee
The World Atlas of Coffee Audiobook*: bit.ly/worldatlasofcoffeeaudio
The Best of Jimseven: geni.us/bestofjimseven
Things I use and like:
My glasses: bit.ly/boldlondon
My hair product of choice*: geni.us/forthehair
(*Affiliate links which may earn us a commission)

[@jameshoffmann]

Click my trainwell (formerly CoPilot) link go.trainwell.net/JamesHoffmann-cp to get 14 days FREE with your own expert personal trainer!

[@patrickgillilan3014]

If it weren't for you I would've had first comment! Curse you Jaaaaames! Jk, love everything you do! Thank you!!!

[@ropro9817]

But you didn't talk about coffee enemas. 😂

[@Bubblepoot]

What's dayter? 😅 Data

[@perdiddlepanskew8018]

We’ve decided we want you to be our coach, lol.

[@samiraperi467]

Is that My Co-Pilot or Myco Pilot? The latter sounds shroomy. 🤔

[@hellfish2309]

Note to all: James Hoffmann, while denying being a health professional, *did not* deny being a professional athlete

[@digitalairaire]

Would sign up for copilot if James is my pro coach

[@PanuSimolin]

😅 True..

[@riveness]

Surely that is hoff jamesmann

[@HansProbs]

being the 7th Grand Slam tennis champion, you’d never know it! As they say, Humble Hames

[@dmdrosselmeyer]

WBC '07 Champ were talking about here!

[@highvis_supply]

Its nice of them to let Hames Joffmann continue his video-making hobby at the mental institute

[@SoapyCilantro]

LOL

[@markmillonas1896]

On the other hand having James give me a coffee I.V. during a hospital stay is kind of the best case scenario IMHO. 😂

[@dogcarman]

Let him talk about coffee and he will stay calm. Ask him to shut up and… no, you don’t want to go there.

[@cyan_oxy6734]

​@@markmillonas1896That wasn't an IV though it's an enema bag. IVs aren't open at the top so James is just putting coffee up your arse.

[@ilintsai]

I almost spewed my coffee reading this comment.

[@KarlSmithByrne]

Cancer epidemiologist here, this was really quite a measured video. One thing I might have considered including is that what people report consuming is rarely easy to parse from other factors such as socioeconomic status. This makes is challenging to know whether higher coffee leads to differences in disease risk or whether some other covarying factors may be accounting for that result -statistically significant, or otherwise.

[@thedylangirl]

Thank you. Many an impoverished person run on coffee alone, due to economic and access factors. It is nigh impossible to know how much of a role coffee consumption plays in their overall health when so many detriments exist throughout their daily lives.

[@NightmareCrab]

word salad, understood nothing

[@charliepoe4935]

I thought the same thing. It is expensive to have four cups of coffee in a day, especially craft coffee.

[@alinaqirizvi1441]

​@@NightmareCrab it's not that complicated lol

[@alinaqirizvi1441]

@@thedylangirl I think that the point was that people of higher socioeconomic status consume coffee more than more impoverished people and so people who consume coffee are more likely to report better health due to their socioeconomic status

[@satchin.]

The effects of caffeine on anxiety, panic attacks and depression are missing, and it would be interesting if more studies would further explore this field using different roasting and brewing methods. Besides, the video is great as always!

[@pelilin2519]

It increase cortisol and disrupt deep sleep which result in mental issue and dependency for caffeine the next day to function.

[@mastazenkei]

Well from what I've noticed with myself , when in distress or pre-stress mode - don't drink coffee , for me drinking coffee is good when I'm calm , sometimes when work gets stressful i skip drinking coffee to not get more agitated .

[@Ingridole]

It's a super important topic, I agree. I think all the questions should be answered at least in these two groups of slow and fast coffee metabolizers. There are also some gene single nucleotide variations (polymorphisms, SNPs) which are essential in conclusion if drinking coffee "protects" you from some serious heart disease or if more than 1 cup a day actually increases the likelihood. Time for personalised / precision medicine, hehe :) *Doing SNPs assay is not that expensive and everyone can get it done. Most companies who are thought by the general public to sequence your genome are just doing these assays.

[@april4657]

I've found personally, I can have 1 cup on a good day. Black or green teas are more my speed

[@KuropatkaJoe]

Agree. that’s something which is missing in this video and smth I personally most suffer from. went through lots of scientific papers on this topic just to get back to trusting my own inner feeling if I can have this yammi shot today or not :)

[@hammertime_]

Imagine waking up in hospital and seeing James Hoffmann intravenously administer a cup of coffee into you.

[@OddLeah]

That is an enema bag 😬💩

[@hammertime_]

​@@OddLeah Even better 😂

[@olamisie]

Well that would be a dream scenario 😅🤓

[@julianshepherd2038]

​@@hammertime_😂

[@TaylorDeCastro]

Me: “ungh….FINALLY!”

[@ariadnavigo]

I work for a publishing house devoted to science communication... This video is a prime example of how to do *great* SciComm. I just shared it with our senior editor. Thank you, James! ❤☕

[@jackdeniston59]

Chat gtp is going to destroy you

[@EpochSecutor]

@@jackdeniston59 You can't even seem to get the acronym right, I'm sure your opinion isn't exactly going to warrant any reaction from them.

[@calliioa]

​​@@jackdeniston59I've used ChatGPT (cautiously, always double checked the output) and it's a hell of a ways off for my use in scientific research. Even with prompt engineering I've seen grossly wrong or even nonexistent sources from the LLM.

[@xWrongButtonx]

@@calliioa Though it might be true, atm LLMs are in their baby years. Gpt4 already is as smart as the smartest of us, while not even being a toddler. It's expected that the next gen, Gpt 5, is going to have 10x higher IQ than it has now... and it's only months away. 1600 IQ AI, wondering who is going to need prompt engineering.

[@Daddo1]

Well…AI is going to destroy us all actually.

[@kuriteufel]

"Coffee does improve another kind of performance too." The editing, him laying down and looking at you from below, the pause, and even the tiny smirk really made me think of something else. This isn't just a video, this is a three-day Manchu-Han Imperial FEAST for Hames Joffmann, there's just so much for them to go wild with.

[@etatsopa]

At the start of this year I detoxed from caffeine for a month, then limited myself to one caffeinated beverage per day. I no longer have a headache by 10am if I haven’t had a coffee, and once or twice a week I don’t have one at all. I’ve also discovered that in the last 10 years decaf has gotten pretty good (in the right cafes) I’m enjoying coffee more than ever before, because I’ve broken my reliance on it

[@bradyvilhauer4445]

This is awesome. I never had an extreme reliance on it, so I’ve kind of always been in the shoes you’re in now, but the ability to go without coffee during a day is really cool. I am encouraged by your comment to challenge myself even more. I enjoy the idea of being healthy enough to naturally summon the energy that myself and billions of others typically expect caffeine to give them!

[@MrChologno]

It took me so long to understand why I had terrible headaches on weekends. Then one week I avoided coffee and the headaches stopped. I really hate those withdrawal headaches. I had to switch to decaf and even diet coke in large amounts can trigger them the folowing day.

[@gillauld2965]

Caffeine is a migraine trigger for me so had to get off the caffeine. Got to watch even soft drinks as it’s amazing how many have caffeine. Still love coffee but it’s decaf now

[@FSPersonalAcct]

I did this too when coffee in the morning gave me digestive flare-ups from my IBS. I drink coffee midday now, but being free from the caffeine dependence to wake up and not feeling the brain fog/headaches when I don't have the means to drink coffee has really changed my life for the better.

[@elloragriffin5478]

James really meticulously researched for a whole literature review and then presented it in a hospital with a coffee IV whilst wearing scrubs. Both the most ridiculous and most educational video I’ve watched in a long time.

[@TheFroneyZone]

right, and like coffee...we need MORE!!!

[@vikkispence]

I can't wait to see the Hames Joffmann remix 😄

[@therealsunnyk]

Honestly don't know how he did it. Is he actually in a hospital or are these separate videos and he's on top with green screens and some medical equipment?

[@kg-Whatthehelliseventhat]

And he used an enema bag as an IV.

[@johnnybravo3869]

Absolutely correct.

[@Liryc19]

I think my biggest question out of all of this is what is happening with the production of that video. That's a crazy amount of information delivered in a crazy good production setting.

[@olamisie]

Plus all the cameos deserve an Oscar 🤩

[@Alec_Collins78]

I want to know why the woman in the waiting room moved.

[@Alec_Collins78]

We don't know. But we do know that we shouldn't imply that correlation can tell us about causation.

[@dogcarman]

@@Alec_Collins78Because weird coffee person…?

[@krisrasmussen1131]

O think it was too create movement on a scene where James wasn't moving much and to shift the weight and focus of the shot. Both positions were very intentional imo.

[@nijamase]

I remember reading a study on heart decease for office workers and they saw a positive effect for the coffee drinkers compare to the people who didn't drink coffee. But when they re-did the study with coffee drinkers vs a group who drank an equal amount of water they saw no difference. That is when they realized that it was the tiny amount of exercise (walking to the office cafeteria 2-3 times a day) that gave the positive effect on heart decease and not the coffee.

[@adrianScu]

Is that the condition where the heart deceases? 😀

[@GPantazis]

There's no way it's that easy right? Like walking to the nearest water cooler is enough to change your heart disease statistics. It seems more likely to me it's straight up from the added consumption of water, with or without beans inside.

[@nichthier8d239]

@@GPantazis Errr besides the effect that coffee dehydrates you and is not adding water to your body

[@comady25]

@@nichthier8d239This is a myth

[@gbf111]

@@nichthier8d239the amount of water more than makes up for it

[@zaxsp1118]

I can’t began to express how much I appreciate you James Hoffmann. You’ve legitimately gotten a clinic to agree to you going about filming a video on coffee. I don’t know anyone else that would put this level of effort into such a project!!

[@veganmonter]

8:37 - "The side eye while looking at phone, then move away from the crazy man talking to himself" is the maneuver all people in large cities learn to do.

[@gabrielpaganini4893]

James, congratulations! As a doctor, I have rarely seen someone communicate scientific findings so clearly, concisely, and responsibly on the internet. Excellent work!

[@timtiny01]

The aspect of this video that surprised me the most was that James & team found a hospital willing to let them film in their facilities. Nicely done, but I think they deserved a shout-out.

[@anttihilja]

Haha thought the same, I'm thinking it might be a private clinic on a Sunday or after work hours etc.

[@miketomas8564]

@@anttihilja Or and Actual Set in a Rent-A-Studio.

[@shiniy]

​@@miketomas8564 I highly doubt that. Have a look at 8:30 for example. It really seems like the woman sitting next to James was very uncomfortable and did not like to be filmed so she stood up and took a seat in the background. Either this was staged extremely well or it was a real hospital, meaning that they had to deal with some people in the background. I don't think was staged as James looks to the side at 8:38 when she stands up. Also, have a look at the man in the background at 5:10. Blurring his back might be an intended funny moment but it looks way too off for me. That also was most likely not intended but they had to deal with it in postproduction.

[@gilessmith9917]

@@shiniy I'm afraid to report this is most certainly a set (source: I've worked there also), but I admire your reasoned arguments otherwise.

[@CrabLadius]

@@shiniy The sheer lawsuit that would be created from doing this, unauthorized, in a hospital is hilariously large. Even if they had authorization to do this in an actual hospital, there wouldn't be any random people or patients in the shots, especially patients, because that is seriously illegal. Those people that showed up were literally props for humor, they were done on purpose, especially seeing as the back at 5:10 had almost perfect timing for the cutaway.

[@notapplicable7292]

I would love a behind the scenes video because the production of this was wild!

[@Andy_Panda]

The production value of this video was amazing. Also the level of research takes this to another level. Well done, James and team, well done!

[@sordel5866]

New sponsor=new production opportunities

[@Fragffs]

Yeah really like the whole setting and cuts to new scenes. Keep up this production!

[@chewielewis4002]

999: What is your emergency? Hospital: There are 4 weird people who broke into the hospital and started filming 999: Whats the issue Hospital: They keep shoving coffee down our patient's throat, putting coffee into IV drips, and their using the ventilators to press a cup of coffee Hospital: The guy with the glasses is now making coffee in the bed pans

[@wouldntyaliktono]

I would absolutely love to know how much work went into producing this episode, with all the props and side gags. Fantastic work.

[@nahor88]

I loved the shot where sits down in the chair, and the woman near him promptly moves to another chair like "ugh who the hell is this guy?". XD

[@Mariposa_46]

Informative, quietly humorous, creatively filmed. James always delivers.

[@kristofkomeny]

James and Team, well done everyone who was involved in the making of this video, amazing work!

[@miketranfaglia3986]

As a physician, a neuroscientist, and a home coffee roaster, I've naturally been interested in this topic for quite a while. My review of the literature concurs exactly with what James said here---coffee is definitely not bad for you, it's probably very good for you, and it really is one of life's great joys. I think that further research may show that coffee is the one true Superfood. Drink up!

[@julianshepherd2038]

Nerd!

[@josenadie]

Now, I worked at a lab as a Research Assistant and couldn't help notice how much science relies on caffeine to be made: do you think there might be some bias when it comes to coffee research? (this is a joke question)

[@AreteZoe]

this dudes right bro i get faded otw to work and then chug coffee to coast . shit is awesome and definitely healthy cause i dont feel like eating which is even BETTER

[@FartPanther]

Hot off the (French) press!

[@Genre99]

As a physician, I too concur. I tell my patients that the only thing wrong with coffee, is doctoring it with cream and sugar.

[@SashaGrace94]

“Awful Tabloid Rag” - Produces a copy of the Daily Mail 😂 As if it was possible, James has just gone up even further in my estimation!!

[@robenglish7475]

So fun! Loved the video, and the playful shooting style. Always a bright part of my day when I get to spend a few minutes watching James.

[@user-fs2ip9ei5y]

This is exactly the kind of video I've been looking for for ages. I wish more objective, balanced, and considered analysis of information videos like this were done, excellent work to all involved.

[@crimsonharvest]

dealing with getting ADHD meds is extremely frustrating but good coffee and exercise has helped me focus on the business of keeping house in a similarly useful way

[@segamble1679]

Preach!

[@Sibula]

For me, I've found a low dose of Concerta with some additional tea or coffee to be pretty good. But different meds wok differently for different people, and some might prefer to go without them.

[@Nodde1991]

The lighting in the set is astounding. If it's an actual hospital and not just a studio it's even more impressive 😮

[@AvenRox]

This is a really well produced video! Whole sets, great lighting and really professional editing. I dont drink coffee but I enjoy learning things!

[@peterwhitehead2453]

Brilliantly researched and produced episode James. Please keep weaving these into your format.

[@peterzeller5736]

The level of quality videos James puts out is incredible

[@RealMattHaney]

I am an Italian American physician and just wanted to reiterate two things-coffee is amazing, and your last point that, like so many things in life, moderation is key. ☕️

[@ajl8198]

Exactly!

[@fernandareid3984]

Exactly, Even water can be harmful if you drink too much!

[@CoffeeKnife]

I always love your demeanor and personality during these videos. Somehow you seem logical and yet lighthearted, passionate but also relaxed, and ofc that smooth british accent is like a nice relaxing massage for my ears. Thank you for being you and providing us with such quality content ❤

[@pixhammer]

This video is so brilliant, i love all the attention to detail and gags, it's SO good and such appreciated effort

[@agwasp]

The problem in my case is that an absence of coffee is bad for those around me…

[@JimJakubJames]

it means you are addict

[@AnotherAyushRaj]

@@JimJakubJames even if the comment was made as a joke, I agree. If you cant go a day or two without coffee then you might have a problem. An I say that as an avid coffee drinker

[@nfc153]

@@JimJakubJames No, I can stop any time I like, and sometimes do because I'm a control freak who is afraid of addiction - ANY addiction - but changes are noticed. Caffeine causes behavioural changes in addicts and non-addicts alike.

[@doqtorisykero7971]

​@@AnotherAyushRajTBF, caffeine withdrawal symptoms are worst during the first day or two (after which they drop massively, if not "healing" completely). You're absolutely right though.

[@REDSIX]

​@@JimJakubJamesyou're addict for pointing that out...

[@laldagorth]

Nice touch at ~ 8:40. That's exactly what would happen if some rando in scrubs starting talking out loud about coffee studies whilst sitting in a hospital waiting room (or, really, pretty much anywhere).

[@tobytyke308]

The production values here are better than a fair few TV shows. It's great to see how enthusiastic James is. 👏

[@yuchikang4305]

Thank you so much James. Absolutely loved this video. In my opinion, this is the highest level of coffee related content anyone could make.

[@underbedmonstersmusic]

I would definitely watch Mr Hoffmann’s content even if I wasn’t a coffee person. What a quality!

[@captainvector]

I do watch his content and I'm definitely not a coffee person!

[@cieproject2888]

I don't think there has yet been a video more primed for a superb Hames Joffman cut than this one

[@alantremonti1381]

Your subtle video editing is actually the best part of your videos, and it's taken me dozens of videos to realize that, you sly bastard.

[@tomasc7958]

You keep dropping amazing content! Congrats for your channel!

[@jutrbr]

The production quality of this is top notch! Keep up the good work, love watching your videos :)

[@austinhancock8204]

Brilliant content with editing to match. You never miss James!

[@coffeenerdaaron]

Wonderful video James!!! I love that you explore and educate us on more areas of coffee other than brewing and product reviews!

[@user-po7iv4ni3o]

James, I love what you've grown your work into. All because of wonderful coffee (and your wit).

[@Tristin.Midnight]

I watched already expecting the answer, and I watched fully knowing I would only believe my own confirmation bias that coffee is fine for me

[@akshayde]

The only real comment needed on this thread

[@classicrockonly]

Toward the end of her life, my grandma was told to drink decaf coffee for her health. She did it a while and said “I’m going to die soon anyway, I might as well enjoy my coffee”. Wise words from a wise woman. What good is living longer if you don’t enjoy it?

[@steelydanfan321]

Cigarette smokers and coffee drinkers are the same lol.

[@2_-]

​@@steelydanfan321me who doesn't do both :

[@PinataOblongata]

My argument to that line of reasoning has always been that it's very easy to find things just as enjoyable or only slightly less enjoyable that will enable you to be vastly healthier. Take food, for instance: for just about every item in your fridge or pantry there is a high protein, low fat and/or low carb option that is either just as tasty or 85% as tasty, to the point where it's very easy to switch to and get used to and still enjoy. I've had some pretty nice decaf before - if I had a heart condition that made caffeine dicey, I'd definitely switch to it if it potentially meant the difference between having a heart attack or not having one and living several more years. Life is priceless, so most things you can do to extend it is worth it, and those things a rarely going to lower your quality of life to the point it's NOT worth it, despite what some moaners will always say.

[@classicrockonly]

@@PinataOblongata you don’t sound like someone who is 85 and been living day by day with many health issues, not knowing if you’d wake up the next day

[@PinataOblongata]

​@@classicrockonly I was more aiming my comment at the general argument applied to everyone, not someone who has already lived out their average life expectancy. That said, I still don't think I would be making poor health choices at that age, because it's probably even more important for seeing the next few years. If there are small changes you can make that are really not taking much away from your enjoyment of life, then it's always worth doing. Maybe sometimes you can still have the "full fat" version of the thing as a treat now and then, but still not all the time.

[@nicolasjcapra]

YES 🙌🏻 As a health enthusiast and home barista, this video was super enjoyable. And you even touched on the gut microbiome! I first heard about chlorogenic acid / polyphenols and all the benefits of coffee in Dr. Li’s book ‘Eat to Beat Disease’. It definitely got me thinking, it would be interesting to see a study measuring serum cholesterol on espresso drinkers but have one group use bottom paper filters… Appreciate the production value and just overall effort that went into all the research for this one. And glad to have confirmation that coffee is in fact good for you ☕️

[@Larsschmidt14]

This video is already legendary. The work that went into the research and then the whole scenes and filming is another level. I make the production of the blue planet seem like an easy job.

[@TheSlave1Taxi]

the production value is INSANE. fantastic informative work, James.

[@woof1912]

Awesome video! Love the depth and time spent talking about various factors. So many studies are trying to isolate single variables and you did a great job bringing a lot of those into the discussion to be considered together! Thanks!

[@nelsonang]

crazy video! the research, scripting, filming, editing... bravo!!!

[@simeonbetteridge5223]

Thorough, and succinct, as usual. Hats off to you and team.

[@kalhan8644]

How much ever you've spent on production for this video, I'm going to say it has been worth it. Real philosophy tube contra points vibe. Good job, a truly entertaining and informative bookmark and share-worthy video.

[@BarenakedFi]

Another point to consider regarding cognitive/performance benefits and effects on sleep is that caffeine generally has the opposite effect on those of us with ADHD. Many of us use it for its calming & sedating effect (and self-medicate with it, particularly to aid sleep). I genuinely spent 53 years until diagnosis thinking the world was suffering from some sort of collective delusion/suggestion/just making stuff up because I had never felt more awake, alert or experienced any "buzz" from consuming caffeine (but do love my strong coffees/espressos).

[@mmmmmmm3246]

*Some people with ADHD feel this.

[@seymourkoop9381]

Dude, you deserve more subscribers and views, because this channel is full of great content and delivery!

[@watch4itscool]

Coffee makes me happy and therefore improves my mental health. Seems good to me 😊

[@owenness6146]

Can we--can we just appreciate the production that went into this video.

[@jorgeessus]

I am from Chile, a small country in South America. I am learning English and today I learned a lot about coffee. Thank you very much for teaching me about coffee. 😊

[@marie-evebeauchemin-nadeau3497]

Slight precision: GERD is worsenned by coffee mainely because it relaxes the inferior esophagal sphyncter, which allows the stomac acids to go backwards in the esophagus. Great video, I love the reserch you do and the humor you bring to the subject!

[@MeiinUK]

And remember one thing, your tummy is made for alkaline food and recipes. This is why, when you create a recipe.. it is for that nutrient and food consumption. If you add acid on acid.. it can actually burn a hole in your tummy. (Not a joke. This is a real thing.) And your tummy's job is to break down food... so that it can be filtered, or added to the body as energy... So, before people think about whether to reduce and to process food or whatever.. We mince meat, as to help with processing. So.. I wouldn't throw away basic good ideas with the baby as well... It makes no sense. It is a weird thing that people associate as consuming minced food as food from the hospitals.. or whatever. But in reality, you do need to process some food.. but not all. Vegetables, shouldn't be over processed. Meat should be broken down.

[@proeuropa1783]

@@MeiinUK If acidic food could burn a hole in your stomach, then you stomach acid would do it by itself. The human body maintains homeostatis, there is more danger to you erroding your teeth through acids drinks and food then doing anything to your stomach. If you add acidity to your stomach, then it will still dilute the stomach acid, since whatever "acidic" food you eat will always be higher PH than stomach acid, unless you drink straight acids, but that's rather not food.

[@0tispunkm3y3r]

My dad bless him, was drinking 9-10 instant coffees a day pretty much for something to do. Doctors couldn't understand why his blood pressure was so high and continued to stay high despite the various medications they tried. He then read something about coffee and blood pressure and cut it out almost completely... blood pressure back to normal!

[@eyhtwozed2606]

My intake is nowhere your dad's amount. Only about 1 to 2 cups per day and that causes my high bp. If i dont take it at all then my bp back to normal.

[@fahadtahir4651]

Great subtle eccentric humour - fingers crossed for more in this style!

[@gschrodt]

Love the amount of time and care you put into digging through the research super easy to digest and very usable on a totally different note I just recently opened a coffee shop and went with the eagle one that you helped design and absolutely love it. Thank you so much for the work you put into that!

[@XclusiveAaron]

Brilliant video and actually very entertaining yo watch! I love the balance, serious and proper information but not boring and light hearted, favourite coffee channel by a long way!!

[@estebanpar06]

Your videos are so well produced I don't even mind watching the sponsored part of the video

[@kipsick8693]

I'd love a video comparing different types of coffee for their health benefits. Blonde arabica vs. dark robusta, etc. Amazingly well put together video as always!

[@lwilliams946]

Love the research, and always enjoy your delivery.

[@borcz100]

Great work James you are consistently compelling

[@ggeudraco]

From someone who every now and again throws scientific papers like this at you on Twitter, I'm grateful for you making this video. Even though I'm sure there are plenty of others who have done the same thing, I kind of feel a little more valid. Thanks James :)

[@ajburdett882]

This was an incredibly detailed video and covered a lot! Awesome work :D I would love for more research to be done into how our bodies can become dependent on coffee and the science behind caffeine withdrawal symptoms. I tried to go cold turkey on caffeine a short while ago as I'm pretty sure it was (and probably still is) effecting my sleep. I wasn't able to get over the such extreme withdrawal symptoms though, I felt like crap. It's not that I felt addicted like I had to have the coffee, I just felt like pure crap until I did.

[@ralexttm4368]

props to the effort put into this video my guy.

[@ashleyslingers2814]

Educational and thanks for always showing the source of your information. Also appreciated your objective and unbiased commentary.

[@thedaver8]

This felt like a Wes Anderson film

[@farhandhamani8024]

the amount of research put into this video is just mind blowing and the way you explain things makes it so simple to understand.. and loved the production in this one.. always learning something new from you Mr. Hoffmann. Thanks!!!

[@mamaharumi]

that opening bit and the hospital room set are top notch, so well done

[@Logical]

That's one quality production, well done.

[@VincentGroenewold]

I worked in science for 20 years and I always had a bit of a dislike to many of these kind of studies. Many are done by medical students in training to become a doctor... why? Simply because it gets you into a field sooner, without a PhD you already lost almost. They want to become a doctor, not a researcher (most of the time, there are really good ones ofcourse). And that motivation isn't good for the quality of the research, you get a looooot of these meta-studies. The biggest issue is that trends are so hard to prove, bias can be all over the place and meta studies rely heavily on the other studies to have been done well. All in all, I take conclusions from these studies in and always with the biggest grain of salt added to it in my brain.

[@solomoncumquats776]

I feel that sometimes easy access to this knowledge is a burden. Of course the word cancer also gets people to click and view ads

[@assain2]

I love this comment. Thanks for sharing your experience. You can see on a daily basis people claiming that 'a study shows x, y and z'. However, if you actually look into these papers, they are rubbish written because somebody needed to advance in their academic career.

[@aldocompagnoni5851]

Sure thing: but the fact still remains that few substances have such positive effects in association studies as coffee. The most logical conclusion is that probably coffee has neutral effects on health. Except perhaps regarding its effects on cholesterol, which does seem substantial from RCTs.

[@VincentGroenewold]

@@solomoncumquats776 That's usually in the title or in the proposal, because it generates funding more quickly. :) Not that I'm saying everything is always crap, but a lot is not really something to rely on at all.

[@VincentGroenewold]

@@assain2 Indeed, add to that the effect of a media outlet that only reads the summary and presto.

[@deathlok44]

I think an underrated discussion point is coffee's relation to stress. I often am a stressed individual and brewing and sitting down with a great cup of coffee is an incredible stress reliever. I think reducing stress is healthy and coffee makes me happy so, I believe with my entire being, that coffee is good for you

[@rosiehoy4736]

Interesting, I've heard coffee called "anxiety in a cup"

[@dejavu2752]

Would you say that's specific to coffee? Probably not...

[@HauntedSheppard]

You should double blind test it with decaf and see if it's placebo connected to the experinece of sitting down. Probably vary it eith meditation or breathing exercises like boxed breathing

[@skeetsmcgrew3282]

I heard someone say once that drinking beer is good for you for this reason. There are objectively hundreds of cheaper, more productive, better ways of reducing stress. Just saying

[@falloncj]

​@@HauntedSheppardI think it's a task we get to start and complete successfully, to varying degrees of complexity and involves going through a process. How many times a day or week do you get to start and successfully complete a task?

[@RollinLeonard]

seriously fun production on this video. good work.

[@cotoorell]

You too James!, I hope you have a great day! Thank you for the video!

[@zae5159]

This didn't surprise me, since I've read a lot of the same publications you came across in the production of this, but this was still super entertaining to watch, and was a great summary of the different areas of health affected by coffee! Great work on this one James & team!

[@AdamJRichardson]

Loved this. And shout out to the supporting cast who were giving you odd looks, ignoring you, holding inhumanly still, or avoiding you. I'm happy that it confirms my belief that coffee is at least not bad for me :) I'd love to see a similar treatment about the current freakout over gas stoves in the US, which feels ripe for debunking. (I mean, if they're really as toxic and cancerous with benzine as some are saying, doesn't it seem like we would have noticed by now, given how widespread their use is in the population over many decades?). But that's probably a bit far afield from coffee! Also, I loved how your ID badge says "Not a Hospital"

[@moyrml]

This is a brilliant video. Excellent production and very well served on the information. Thanks!

[@jinchoung]

i would never have thought that SETS and PROPS would be a major part of one of your vids... the production value!!!! must fan myself....

[@laserwolf65]

It's good for the soul; that much is clear.

[@iPsychlops]

Love all the effects and effort that went into this educational video! Splash watched while drinking French press

[@bobcanning6009]

This video is wonderful, on so many levels. Excellent work!

[@christskingdomiscoming5964]

This video was really well done! I would like to hear more about coffee's connection with Adrenaline and Cortisol, specifically the relationship with Adrenal fatigue and CFS. There were several studies that came out in the late 90s to around the late noughties that seem to have been forgotten now. They seemed to suggest a negative relationship with coffee and liver function as well as cancer and cardiovascular health, if I recall. The book 'Caffeine Blues' by Stephen Cheriske came out around this time too. It's worth a read if one is interested in reading the opposite perspective, though some of the information might be out of date now. Myself; Im an unreformed coffee addict!

[@funkyspacecow]

The fiber content of coffee was a big surprise to me, I had no idea it contained so much soluble fiber. Great video all around, loved how you gave a very serious summary of complex research in such an approachable and goofy way. Keep up the great work James!

[@itguydave2164]

What incredible production quality... especially love the activity happening in the background, some fine attention to detail! And notice James exits the bathroom with a colouring book ;)

[@tomsway]

I love this! Both entertaining and informative! Well done, sir!

[@djr093r5]

Interesting note: there is a certain subset of the population, typically with ADHD (although not all people with ADHD experience this), where drinking coffee actually makes us drowsy, and feel the need for a nap. Happens with certain other stimulants as well. I always wondered why coffee had that effect on me, until I was diagnosed with ADHD. Coffee also works really well for headaches, as caffeine is a vasodilator. So, you can give your paracetamol a supercharge. Should also point out I'm not a medical expert, so don't do that unless you talk with your doctor first.

[@ornous]

I'm also not a medical expert, though I put on some scrubs to write this comment 😁 The only reliable treatment I've found for my migraines is a cup of coffee with an analgaesic. Been my go to for over a decade and works every time! Also works on my tension headaches but I only get those like once a year. Thanks for that note about the impact of coffee on individuals with ADHD, certainly surprising! I imagine you'd have a similar issue with teas or is it specifically a coffee thing?

[@cg505_]

I'm very curious about this. I have some level of ADHD and often experience sleepiness after drinking coffee, but it's hard to find any good information on this. Is it really related to ADHD or is that mostly anecdotal confirmation bias?

[@lakritzeslena]

​@@ornousit's not a coffee thing, same effect with other stimulants with ADHD. (Since I take my ADHD medication (a form of amphetamine) I take a day nap 😅)

[@kiwaminski]

Back when I was drinking a coffee every few hours at work (before being diagnosed and medicated for ADHD with stimulants), coffee would make me almost fall asleep from a sudden onset of drowsyness. Same thing now with stimulants, though to a lesser degree. Funny how that works; you wouldnt really expect stimulants to put you to sleep haha

[@vikkispence]

I have ADHD (and I'm also autistic) and coffee makes me calm and sleepy, same as my stimulant meds. It's great stuff

[@Vaan4756346]

Thanks, great video again. Only thing I think was missing are withdrawal effects if you drink too much and the effects on the brain from overconsumption.

[@tallbikercat]

Great job! You had to have had fun making that video.

[@Clint3029]

I was waiting for the credits at the end of the video!!!! Tremendous in every respect! It is extremely interesting that you decided to mention the cigarette smoking with the results. Most would have ignored that fact.

[@binaryslate]

Informative video. I'm now decaffeinated coffee only, by order of the Doctor, so it would be interesting to know if you'll include anything as regards 'Is Coffee Good for you?' in the planned decaffeination process videos that you mentioned a few months ago. Hopefully they're still in works.

[@jameshoffmann]

I don’t have my notes to hand, but several studies saw positive impacts from decaffeinated coffee - caffeine isn’t always the important compound offering potential health benefits

[@dannyquiroz5777]

@@jameshoffmannthere are many decaf processes, perhaps a video is in order

[@konradsenf]

On future health-related topics: I would be interested in withdrawal symptoms. Prevalence, predisposition, etc. I spent at least half a year, possibly longer, suffering from terrible headaches most Sundays, which I initially attributed to overwork and lack of sleep. Both issues are probably causing other problems, but the headaches vanished as soon as I stopped consuming espressos at work on weekdays (and no coffee whatsoever at home during the weekend).

[@paulyster]

Really stepped up the production value on this one. Really good video.

[@stokesbradley]

What a smooth video, excellent work!

[@Creed132UNC]

@JamesHoffmann Great video as always! Just wanted to point out that in medicine we generally talk about it taking about 4-5 half-lives for a drug to clear your system so this would mean caffeine takes closer to a full day to be eliminated. This is because with each half life, only half of the remaining drug will be cleared. So after the second half life you have cleared 75%, after 3 half lives you are at 87.5% cleared, 4 half lives gets you to about 94% and 5 gets you to 97%. The point remains, if you have a coffee at noon a lot remains in your system at bed time and you will even still have more in your system the next morning than you would expect.

[@proeuropa1783]

That's not how a human body works. Imagine you have your daily maximum dosage of 400mg. If your body can clear 200mg of caffeine in 5 hours, it will not suddenly only clear 100mg after the first half-life is up. Half-life is only a rough guideline about how quickly certain substances are eliminated from the body when it comes to actual human consumption, it is NOT like Uranium degrading into other elements.