5 Things Your Hair Reveals About Your Health

[@HullumpiEsa]

..''tight ponytail can cause hair to fall earlier and more often..'' *Immidietly loosen ponytail*

[@clumsycolours1677]

HullumpiEsa yeah I have my hair in a ponytail all the time I don't usually have my hair down....until I heard that

[@geturhandsoffmygirl]

Poor Ariana

[@eyan7808]

@@geturhandsoffmygirl oh no! 😂

[@kl-1447]

My sister tells me I'm going to go bald by 25 because I literally wear my hair up (usually in a ponytail) all the time

[@sourpuss5951]

Jojo Siwa needs to see this

[@meghanparris8203]

About a year ago, my nieces hair started falling out in huge clumps, (which scared the crap out of us) and it took her doctor a while to understand what was going on, but he finally figured out that it was a zinc deficiency. She started taking zinc supplements, and almost immediately her hair started to grow back.

[@shashwemmie]

Thanks for talking about alopecia areata. I've had it since I was a kid (I always have one or two bald spots coming and going) and used to be really embarrassed about it. I'm cool with it now, but it's still nice to see it talked about. Keep up the good work!

[@YuBeace]

It runs in my family as well! I’ve been fortunate enough not to have it myself, but my aunt has it pretty severely.

[@madd5]

I recently had that on my beard. There were two small bold patches. First white hair started growing where the patches were. Then they turned black. I was so relieved, because they looked terrible and I had to shave my beard every day. EDIT: Something shady going on in my body LOL I better go see a doctor.

[@Future_Phoenix]

No disrespect towards people who have this meant but, it has a really fancy name. It sounds like a spell or something. Are you all wizards?

[@akasakasad6271]

It destroyed my confidence

[@aproxamillionwasps474]

Dane Cook2 that happened to a girl I know! She is fine, but her hair fell out and grew back white all over her head.

[@odapunkt]

One time I was at the store and my hair told me to buy chocolate chip cookies, and the expensive ones too.

[@cob571]

Mine keeps telling me to eat it..

[@odapunkt]

@@cob571 Not my cookies!

[@cob571]

@@odapunkt I mean I eat my hair :(

[@odapunkt]

@@cob571 Oh good. Here I was thinking its best to shave before being eaten. I have it the wrong way around. Good thing I'm watching SciShow, one of these days I will crack the code.

[@MrWombatty]

Those damn lying follicles!

[@hypatiakovalevskayasklodow9195]

"your hair isn't just something that you have to deal with every morning" - first time someone accurately described hair imo

[@IANF126]

Cytokines: *exist* Hair Follicles: "I've decided i want to die"

[@tylersoap6065]

Mood

[@shinyray6927]

More like Hair Follicles: *minding their business* Cytokines: "You is kill"

[@Keekers3299]

Thanks for covering this topic! I have hypothyroidism and many people with hypo lose their hair in clumps and get a lot of thinning especially in our eyebrows.

[@mrxanthios7045]

Only thing my hair is telling me is "bye!"

[@Koyaanissparris]

Hi Hank (and the rest of the SciShow team)! Thanks for being awesome and making great things like this video! DFTBA!

[@paintingstarss]

This episode was sponsored by GOING TO YOUR GOSH DARN DOCTOR

[@AhmedKhan-cp4ko]

😭😭😭😭😭😭😭😭😭😭 I CONCUR!!

[@guytitanic]

Stressing Darn.

[@matheussanthiago9685]

how do one even get ''personal doctor''? I hear it all the time on the internet, but it really isn't a thing on my country or maybe I'm just too poor to afford the same doctor more than once

[@paintingstarss]

@@matheussanthiago9685 you don't unless you're ultra rich. "Your doctor" refers to the doctor who you see, that others also see.

[@arthas640]

You must not be American if you dont understand why people would go to a youtube video for medical advice before spending your paycheck to see a doctor.

[@error_d2c]

*One Punch Man* "...Am I a joke to you??"

[@andy56duky]

Yes. One punch man is a joke.

[@toxiccan175]

No, it’s a satire.

[@anevtuscrynis3954]

@@bigchinkid9052 *Saitama

[@liggerstuxin1]

“Am ima joke to you?” Can’t wait for this meme to die.

[@sprigganpanda]

@@liggerstuxin1 I regret to inform you that it's still going on..

[@ericaevoy1]

I have Hashimoto's and all I have to say for this video is, SAME. My hair is thick and thin, falling out and growing in places it shouldn't. Thyroid issues are the best lmao.

[@christelheadington1136]

Me too,(but only extra in the lip/chin), then again,I went through menopause about the same time the goiter developed.

[@dc2guy2]

I have Hashimoto's as well and about two months ago had a weird smooth bald spot on my scalp and was freaked out. Went to the doctor at my job and they did a scan for a fungal infection which came back negative, but now seeing this video it sounds like Alopecia Areata. It seems to have gone away mostly but doesn't feel or look as it did before.

[@patrickfitzgerald2861]

LOL! I've got it, and it affected my gut. So much fun stuff I can't eat anymore. Sad. 😥

[@RabidRekijo]

I’m bipolar and I had a depressive episode that lasted about three months not too long ago. I was so stressed the whole time and when I showered my hair would just fall out in handfuls.

[@sarahgerhardt4747]

Good thing you have subtitles, I can’t hair

[@Junokaii]

Maybe you should take a 'coarse' to help you out with that.

[@superdupergrover9857]

Your comment doesn't make the cut.

[@timewalker6654]

Shut up! nerds.

[@lexiridenour324]

@@timewalker6654 Hey man, those comments were really 'smooth'

[@chickenfoot87]

I also have PCOS and it makes me grow a lot of body hair. I also have a deeper voice than is usual for a girl.

[@raeperonneau4941]

Have you considered Spironolactone? I used to have all of the PCOS symptoms, especially facial hair, and Spironolactone has fixed most of them.

[@hopebadger]

I have trichotillomania so my hair tells me how much damage I have from the disorder. Wish you would do a video on trichotillomania because not many people know about it. There's a lot of people who have it but aren't diagnosed and I wouldn't have to explain it everytime. Besides, I'm constantly trying to learn more info about it.

[@annanicholson5309]

I heard of that somewhere but dont remember anything else about it.

[@RowanShard]

I recently did a poster on trichotillomania for health class. So sorry to hear that you are going through that

[@Tautolonaut]

"I like what you've done with your protein clumps" *slap

[@darrellcole6311]

This explains more about why my dad went prematurely balding. He was in the South Pacific during WWII, and caught malaria fever. His temperature was so high, for so long, that his hair fell out in clumps. A few grew back after several years. But, he basically had what we called a "toilet seat" hairdo (not to his face though).

[@Soraviel]

Love my hair, I love how my hair just fills up quickly after trimming it down and my hair is naturally soft and easy to come into the shape I want it to be 😊😎💪🏾🙏🏾👊🏾, thank you for this short and sweet info about hair.

[@ClumsyJellyfishy]

#DontTouchMyProteinClumps

[@vaultvon2126]

really see your hairs tells a lot about your health. thanks for this vid.

[@thejudgmentalcat]

When I went through menopause, my thick hair thinned out a great deal.

[@ag135i]

The torqueso color background is looking cool.

[@deathmetaldahlia]

Love you guys! Hope y'all are well!

[@naomilovenpeace]

Yay a scishow for us hairstylists!

[@froggyslap]

3:05 jojo siwa’s callout post

[@oneblacksun]

I really wanna see her bald now.

[@TRINI333]

She popped into my mind as soon as that part came on. I'm not going to lie, I feel bad for her being blasted on the internet about it.

[@aproxamillionwasps474]

Gat she’s gonna be in a few years the way she’s going...

[@Influx27]

Thank you so much for this. I had the first condition listed here as a kid and the nurse at my grade school told us that it was from not washing enough. Shame from that encounter followed me for years. I guess we should have gone to an actual doctor instead

[@arturduchene]

Back in the 70s I had a family friend who was a well-known and respected cosmetologist. After decades at his profession, he had noticed some women had hair conditions which, to him, indicated a health issue. Since he was not a physician, he could not diagnose. However, he predicted with a high rate of accuracy people with heart, liver, kidney and other organ problems that were later diagnosed by a physician and treated. Over the years I often thought doctors should study this more as it could very well prove to be a useful diagnostic tool in early identification of certain diseases. This is the closest I have seen or heard of this since that time. Now, almost 50 years later, this video is the closest I have seen to studying hair as a diagnostic tool but the video doesn't seem to cover changes in hair as symptoms of organ disease/disfunction. Perhaps there are some doctors who have studied this and use it to diagnose and test for hidden diseases. I'd be curious to know if anyone else knows about this.

[@esthermofet]

Fun fact: Radiation poisoning can also cause hair-loss. Although, in fairness, alopecia areata is far more probable than an abundance of hyperactive protons. But, if you're concerned, probably best to have a chat with your doctor.

[@gigglysamentz2021]

Thanks for such a well-researched and well-explained video!

[@Peldyn]

I had a telogenic event and it was scary! Happened after I had a thyroidectomy. Lost most of my hair. Thankfully once my thyroid meds were adjusted my hair grew back.

[@stinkymans5002]

Great video, Hank. Keep it up!

[@jasonking9548]

What about sudden growth of white streaks of hair. And white eyelashes

[@SeabassFishbrains]

That's called aging.

[@williamwheatley1852]

Look into adult onset vitaligo

[@tonysanta1240]

@@SeabassFishbrains Damn my two pure silver hairs between my eyebrows and on my chin at ripe old 25!

[@Master_Therion]

I had a medical question about my hair and asked a doctor for some free advice... But he said I'd have toupee.

[@RedRogue]

get out

[@cob571]

@@RedRogue No, you.

[@momcompickmeupimscared8635]

what is toupee ?

[@Ian-bf4yk]

Iris's Subiminals Resuts a wig.

[@xxXthekevXxx]

Iris's Subiminals Resuts in this joke, toupee = “to pay” But toupee is a hair piece. Fake hair glued onto bald guys’ heads.

[@taritangeo4948]

Its still attached to my scalp so im good

[@Gaaraape]

So all I need to stop my male pattern baldness is to become pregnant and stay pregnant forever, got it!

[@zmanjace1364]

Well I'm not even 2 mins in and my head itches. Great.

[@michaelseydor2636]

Thanks SciShow for talking about alopecia areata. I have alopecia universalis which is a form of AA with total hair loss over the entire body. AA is one of the least understood and under-researched autoimmune disorders out there since there is no physical pain/restrictions. However, the negative psychological and societal effects can lead many of us to develop mental illnesses among other side effects. Any coverage on our disorder is appreciated as we collectively are trying to create awareness to fast-track research and clinical trials. Woohoo!

[@rhondahuggins9542]

Am a witness to #5...started in my teens (am blond & fair complected). Saw a doctor who blew it off. "Some men like hairy women." Actual quote...was 17!!🤬 Turned out to be (as it was called then) premature ovarian failure. Came this close to complete mental breakdown because of it. Listen to your body and find a doctor who hears what you are saying. Dr. B saved my life and sanity.

[@shariyahe.5348]

I dunno if anyone noticed hank saying "bio sex females" but I really love that scishow is making an effort to be more inclusionary by showing that saying female doesnt = a cisgender female

[@ThatOddChickenHippie]

My hair falling out was what caused me to go to the doctor and I was diagnosed with diabetes. Also, covid caused my hair, my mom's hair, and my sisters hair to fall out, but that actually took a month or two after getting it

[@JeremyPickett]

Too many comments way funnier than me :) Thank you Sci, this happens to the best of us and shouldn't be feared. I had a severe health thing, three months later my hair fell out, three months after I am back to normal. Well, normalish :) Talk to your doc, and we dont judge.

[@gailaltschwager7377]

Thank you!

[@elainebelzDetroit]

I have alopecia areata, just one of my autoimmune disorders (in a family full of them).. I wanted to point out to anyone else dealing with this that mine, anyway, responds very well to treatment. A dermatologist can inject a corticosteroid into your scalp (yeah, it kinda hurts, but not too bad) all over the spot, and it grows back. So keep a relationship with a dermatologist so they can slip you in when you need it! I'm convinced autoimmune disorders can be exacerbated by stress. Mine is pretty intermittent, so I've noticed it showing up mostly when I've been under a lot of stress - that's when I've had the biggest spots, anyway. My first bald spot appeared as I was about to graduate from college into an uncertain future...and the second (a rather large one) during the end of my master's program (which was highly stressful due to a thesis committee member dropping out a month before my defense). When I got accepted into the PhD program, I bought a hat. Weirdly, I did fine toward the end of my PhD program. (Now I know why that degree comes with a funny hat...) But it's been less severe yet more frequent since - often little spots around my hairline. It'll look like a hairdresser accidentally shaved to far into the hairline. Those I ignore and let pass on their own, but it can take a while.

[@JeffDAPG]

Thank you for that extra note about not diagnosing yourself through this video! I've seen too many people get freaked out from using Google to see if they are sick!

[@arthas640]

I've heard of studies where they've found the majority of food allergies and many digestive diseases (IBS, Celiac Disease, etc) are falsely self diagnosed. I had a roommate who claimed to be deathly allergic to all seafood, she ate some homemade thai food (that had a ton of fish sauce and oyster sauce in it, plus meatballs that had shrimp) and she was absolutely fine. She found out that some stir fry she loved had fish sauce and only after she found out about the fish sauce suddenly she "felt really crummy". Same goes for some conditions like ADD/ADHD and dyslexia, I've met quite a few people who claim to have that without ever getting a real test on it all because they read some symptoms online. My dad claims ADD and dyslexia whenever anyone tries to get him to do boring things like paperwork but he has zero problem with spending hours on Facebook reading posts and conspiracy theories.

[@cellogirl11rw55]

I have Hashimoto's Disease, and I have noticed that my hair tends to fall out around my part and temples when my thyroid hormone levels are too low. For the record, I have natural blond, curly hair down to my waist.

[@PIXELEDsamm]

Oooooohhh! Please do an episode about the types of psoriasis!

[@Hyukfied]

Can someone explain eczema damaged scalp patches of white hair and its healing process? I thought I was crazy but I saw a white hair strand growing with black roots!!! I was thrilled!!! I thought it would be white forever but I guess not. xD

[@liggerstuxin1]

Possibly you have been eating healthier in cutting out carbs? Carbohydrates are known to cause inflammation.

[@thisismissem]

When I was in my teens I had a brief interesting period where two or three small patches of hair on my body just lost all pigmentation; My doctor couldn't work out why but put it down to some sort of stress reaction 🤷🏻‍♀️ (The pigmentation never return to those patches either)

[@williamwheatley1852]

I'm surprised your doctor couldn't work out why, look into adult onset vitaligo. Some people only get it in small patches, particularly in areas of the body covered by hair. I know someone who was lucky enough to have a single patch of white/nonpigmented hair right where her parting was, it looked pretty cool.

[@sharanski]

dude that happens to people who went through something SO stressful..i hope ur ok lol!

[@thisismissem]

@@williamwheatley1852 it stopped after a month or two, but the pigment never restored.

[@thisismissem]

@@sharanski yeah, I've heard about that! The pigment never returned but I've not had more; some pigment is returning now I'm taking melatonin as a sleeping aid regularly. I'm fine though!

[@nikkiwilliamson4665]

My hair started falling out in 2017. It happened because I was very ill and on a lot of medications. I got better, came off the meds and it started to grow back thicker. Now I have a tonne of baby hairs that aren’t yet long enough to tie up but are long enough to get in my eyes...

[@TheSzyko]

Please make a video about why your turn down the music volume when backing into a parking lot ( and what science is behind it). Yeah for sure it´s because of focus, but why does everyone do it? Maybe there is more to it. Much love, thx for your show!

[@wwrk25]

Now I understand more about Lex Luther. Thanks 😊.

[@morrischen5628]

Thank you for using trans/gender-inclusive language!! This just made me love you and your channel even more (which I didn't know was possible)

[@DerfLlennod]

The information about the ponytail was actually pretty cool, I did not know about that. But as a person with seborrheic dermatitis, pyrithione zinc is good, selinium sulfide is much better, coal tar is cheap and works with others, but the best is Ketoconazole if you have the money.

[@Zye1984]

None of those help me..I even use two prescriptions x.x

[@DerfLlennod]

@@Zye1984 very intriguing. I feel bad for you though for the difficulty of it not working. but going outside the norm is what makes science interesting as to why did it not work?

[@user-vn7ce5ig1z]

One time I suddenly developed alopecia barbae which caused a small, circular bald spot in my beard (which was still visible even after shaving because it was completely hairless) and it was caused by stress and went away after a while.

[@dandedvukaj]

I got a hair loss commercial on a video about hair. How nice to know that KZbin is watching my every move.

[@MrAskmannen]

tfw hair is slighty curly so it doesn's tangle and i still don't need hair gel or any other hair product. Feels great and i hope i don't lose it

[@josiee1120]

My sister’s hair started falling out about a month after she got really sick. It totally freaked my mom out, but the doctor told her it was totally normal.

[@InfansDeAter]

Bald patches mean I have syphilis, got it. Thanks!

[@nolanwestrich2602]

This is why they had that "go see a doctor" PSA at the end.

[@dawn-from-the-lab]

I complained about hair loss to my doctor and dermatologist for 9 years. My hair didn’t stop falling out when I was pregnant. In January 2020, it got so bad I had a bald spot big enough to see from across the room. I saw a KZbin video about iodine deficiency symptoms. I started taking kelp pills after that. On day 3, my hair stopped falling out. If I go more than 2 days without taking it; my hair starts falling out again.

[@megangreen274]

Just a warning to you guys, I tried th equate version of the ogx brand of shampoo because it was cheaper but it actually dried out my scalp really bad and gave me seborrheic dermatitis. Been trying to heal it for a year even after switching back to ogx and trying selsum blue

[@alethalassiter]

I’m surprised you didn’t mention anemia. Low iron is also a cause for hair loss, especially in women.

[@jerry3790]

Video starts at 0:00, just shaved you some time.

[@cob571]

Thanks, Sean Connery!

[@thatKurtis]

When you try too hard for a joke

[@thomasjansen5921]

@@grugmann I just want to tell you that you have the most epic profile

[@RobotHunter1234]

*wheeze*

[@timewalker6654]

@@grugmann when you try too hard to find humor.

[@ashimochi]

I leave the floor coated in hair wherever I go but I have a super thick coat of hair, even with shoulder length, it takes a ton for it to dry It's been months like this and no notorious change, but as the video says, probably has to do with Ballet hahah

[@elizabethmeier5486]

😲 I'm nearly positive the first one you talked about is what is wrong with my scalp. It's been an issue for years. I just thought I had really bad dandruff 🤷

[@mollystringer6273]

I'm positive that's what happened with my scalp too. One day it just stopped though? Idk, but there were like patches where it was really bad and I couldn't even push my hair over to the other side without feeling it.

[@whatface1278]

My wife left me 6 months ago. Since then i have lost around 80 pounds and most of my hair.

[@danielledorchester9739]

I had adult cradle cap!!! It was so weird. I think it could've been partially because I'm a model, and people are always putting weird products in my hair that I have no control over. I also traveled a lot and lots of different phs in the water etc, i suppose could contribute to the microbiome. I also just think it's important to scrub your scalp a bit with your nails, I read somewhere that this causes irritation so I stopped scrubbing my scalp with my nails, just my fingertips, and the buildup became more severe. Sometimes you gotta just dig in there!! Hah.

[@yudritewak9188]

Do a video on best shampoo for hair. Do we need commercial shampoos at all and stuff like that...

[@typacsk]

3:50 I had noticed that my eyelashes tended to come out when I was getting over an illness, but I never knew why!

[@maeve6363]

My hair is a nightmare. It’s super frizzy and big and inconsistently curly

[@carlosvasquez6054]

Maeve McCann don’t wash it to often with shampoo and use a leave in conditioner

[@Rainxiety]

@@carlosvasquez6054 I bet they've tried that and a million other things for at least two weeks each

[@vaibhavgupta20]

i diagnosed my stress level when my hair starts to fall and becomes grey.

[@beverlydavis287]

It actual makes a little sense that your fair would fall out with your body going through a fever because the hairs on your body are to keep your temperature regulated and if your too hot your body sees little use to keep all the hairs. Idk just makes some sense to me. I love these videos

[@Mistfall254]

The way we found out that my gallbladder needed 2 go was that my liver enzymes were higher than normal and my skin was a lil more scaly. I'm still treating my skin issues from the liver/gallbladder fiasco

[@kirb612]

Didn’t even watch yet, but this came at a really good time

[@nerfthecows]

Dandruff....just fyi try using water that isn't as hot as usual....often the issue

[@chickenfoot87]

A fever changing the hair can happen in animals too. It's called a fever coat and can cause kittens and puppies to have a weird fluffy coat after an illness.

[@Migdo14]

Very informative.

[@iissacc]

So if I shave off all my hair I'll be more healthy?

[@akasakasad6271]

Love your name. K bai

[@SheepHairOG]

Cool video. Anyway I need to schedule a doctors appointment :)

[@-4subscriberswithahammerad521]

So what if a person is bald? Does that equal ultimate thanos?

[@oldcowbb]

it means they do100 push-ups, 100 sit-ups, 100 squats, and run 10 km every single day

[@anotherks7297]

-4 Subscribers with a hammer addiction High testosterone

@@oldcowbb yep, living fast and dieing young.

@@robinsonhogan6299 and let's not fotget parasites and genetic abnormalities.

[@capslockcapslockcapslockca1948]

I was going bald but I started using anti androgens and Rogaine. 4 months in and my scalp is full of new hairs and even the ugly crows peak is bridging over with new hairs. When you get your hair back you become zenned out and feel sadness for those losing hair.

[@laurettamae9573]

Well now I know why I’m a hairy beast now. I was diagnosed with epilepsy 3 years ago and I never knew why hair started growing on my chest.. 👀 it’s the seizure medication I’m taking

[@lillypod21]

I learned a crapton about telogen effluvium after I started losing clumps of hair a few weeks after recovering from dengue fever. I know it's just hair and that it grows back, but suddenly losing that much hair so quickly is really distressing. It's been two years since the rapid hairloss stopped, but I feel like my hair has not gone back to how thick it was before TE.

[@thewallabyedits6403]

Switching to a scrunchy helped from pulling my hair out

[@TheFourthWinchester]

I do not have the body of The Rock. I cannot afford to go bald :( I recently lost a lot of hair due to Typhoid :/

[@arthas640]

I started going bald as a teenager thanks to chemo (sometimes hair doesnt come back, comes back a different color/texture, or comes back super thin or patchy). I figured i could either go broke spending money on fancy treatments or start weightlifting and try to go for the "mister clean look" or at least the "Jean-Luc Picard look". I at least still have a decent beard, wich is nice. I desperately dont want to get fat and look like Homer or a neck beard. You dont really need to be super buff, at least as long as your fairly fit looking its easy to go for the Jean-Luc Picard.

[@Liusila]

I’ve had dandruff and an itchy spot on my head. It really doesn’t respond to any shampoo and I know it’s part of a bigger thing because when it gets worse a few other areas around my body get really dry and start to itch. Wtf.

[@macbuff81]

I've got male pattern hair loss aka androgenetic alopecia meaning it's a genetic defect/trait causing hair follicles to drastically shorten their growth cycle in reaction to androgens. Women can get this too usually after menopause when estrogen levels decrease. I do hope this genetic defect can be fixed in the future using gene editing. Interestingly, only the hair on the scalp are affected by this genotype.

[@cob571]

Hair transplant videos on youtube are fantastic

[@NishantSengar]

Nicely explained, but what causes premature greying of hair, can that be treated? I have seen even the 5 years old kids start to have grey hair.. is it all diet dependent?

[@gingergamergirl98]

Nishant Sengar AFAIK it’s genetic

[@NishantSengar]

@@gingergamergirl98 I thinks it's more to do with your diet, especially if it lacks vitamin b6, b12 and D..

[@conyo985]

How about early graying of hairs?

[@zacharymli]

conyo985 Prematurely grey hair occurs due to severe, prolonged sleep deprivation. If you’re not chronically living on 3-4 hours sleep a night, it may be due to sleep apnea (even though you feel like you’re sleeping, your body isn’t functionally sleeping), or stress - which may also be causing grey hair due to messing up your sleep. Once you reestablish a habit of getting adequate sleep again, your hair will stop greying. That, or it’s genetic. Which hell, maybe you all have chronic sleep issues. Regardless, healthy sleep will do wonders for your mental, physical and emotional well-being, so it’s worth a try.

[@conyo985]

@@zacharymli Thank you. Now that I think about it my quality of sleep ain't so great.

[@FloozieOne]

What causes hair to not grow at all? I had my hair cut almost 10 years ago and it is only about 2" longer than it was then. Yes, I do tie my hair back but it isn't a "style" choice. My hair is so fine (a genetic thing, my father had the same thing), and it is because it is so short it blows around and gets in my eyes. By short I mean maybe 5" in the front and 7" in the back. Even my leg hair doesn't grow much, I only "have" to shave about every three or four months. This I don't mind at all but I do like playing with shaving cream - chuckle.

[@CharcoalSkiesX]

Holly Rockwell this could be a thyroid problem. My mom has severe problems with her thyroid and when she is not on her medication her hair basically doesn’t grow much if at all. You may want to talk to a doctor about it.

[@rainbomg]

You can take biotin and see if that helps, plus you should trim your hair regularly so it will grow faster. You can also try stimulating the scalp, using tea tree based products and/or topical biotin.

[@marvyricafrente8754]

What about the premature whitening of hair? There's like a handful of people with them in my University, thought it's caused by stressed but I'm still skeptical.

[@coraliehoney]

yeah i wonder about that too! pretty much everyone in my family got some white hair young. my brother’s had white hair since he was 13 and i have since i was 15

[@heatherwalker5029]

Really depends on the person. Waardenberg syndrome can cause that but it's fairly rare. Some people may be secretly dying it, using too much dry shampoo or showering after the showerhead has been bleached lol. Even too much laundry detergent used on bed sheets can cause hair discoloration.

[@marvyricafrente8754]

That's what I thought too Maybe they are dying it, but when I got close to someone with that condition, the strands are individually white, like there's patch of black hair with white hair interspersed, sort of like salt and pepper.

[@heatherwalker5029]

@@marvyricafrente8754 Sounds like vitiligo? Might just not have spread yet. Also are these people Caucasian and very tanned looking? I grew up with a kid, Caucasian white as paper parents and their kid was deep olive tanned with white hair! I guess if the people you know are at uni maybe walk to the science department and get them to have a look :p

[@marvyricafrente8754]

I don't think it's vitiligo It only affects the hair and he is asian as far as I can tell

[@thisonetime410]

I have dandruff. It started around 12 years of age. I've tried all kinds of dandruff shampoos none work. I have to only shampoo my hair once a week sometimes twice. I use shampoos for Africans because they're not as drying on my scalp. I also have to oil my hair once a week to two weeks. My son whose reaching 12 years old just developed dandruff too. I think its a hormonal thing rather than a fungus thing as you mentioned. Why would it only start around the time hormones change in a person's body? I'm so tired of dealing with dandruff.

[@christinaquiroz]

My granddaughter at age 5 lost all her hair on Christmas day an then the following year 2018 at age 6 on Christmas day she lost her hair again. It's been a mystery. Any thoughts

[@rachelholt2019]

Shedding more frequently can also be caused by thyroid imbalances

[@Dastreus]

I just have a couple shampoos for dandruff. THIS EPISODE MADE ME ITCHY

[@OlenaKovalenko]

1st of all, what a useful topic

[@busterthemutt8224]

My grandpa had a balled spot , and my dad has a reciting hairline. My other grandparents all had perfect hair at 60-80. I'm getting a slightly reciting hairline either from genetics as iv somehow got almost all the medical issues both sides of the family had, which manily is more back and neck issues, but i do have Hashimotos( starts with hyper then turns into hypo after the immune system destroys the thyroid glands) . Or it's just stress and wearing hats all day.

[@bryceburgart8544]

Not sure if all you scishow presenters have a friendly competition going on about who’s the best, but I think you’re the coolest! Another great video! (You’re all great btw! But you’re not my kids. I can have a favourite)

[@4mpersan]

Bryce Burgart Hank is the owner of this company.

[@HTPCYMC]

But what does your health tell about your hair?

[@tiffyw92]

If you play this video in reverse, you will find the answer to your question. More srsly, it works both ways. Better health means better, more sustainable hair.

[@briankerrigan3529]

My health tells some foul stuff about my hair. It's mostly lies though. My hair stands up for itself, and says, "Hey, go to heal."

[@SnowblindOtter]

Okay, yeah, but what about your hair fibers getting thinner, or your hair receding or becoming less pigmented, due to vitamin or nutrient deficiencies? It's literally the most widely spread cause of one's hair fluctuating in one aspect or another, and it doesn't take a rocket scientist to figure out that eating right helps your hair grow better, while eating crappy causes it to slack off.

[@limpnjen]

That first picture of the baby head made my skin crawl.