Here Comes The Sun: The Science of Vitamin D
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- Опубліковано 28 вер 2024
- When you hear the word "photosynthesis", you probably think plants, but we also "make with light". Our skin uses Ultraviolet B light to synthesize Vitamin D, and it's pretty essential to our wellbeing. But what is fascinating is the delicate balance between making enough Vitamin D and being at high risk of skin cancer. And the molecule that completes this menage a trois is the one that fundamentally underpins racism and things like "fairness creams".
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PLEASE NOTE: 2:52 The Ionizing and Non-Ionizing labels are on the wrong sides. Gamma ray/UV is the ionizing side and Microwave/Infrared/Radio is the non-ionizing side. UA-cam used to allow annotations but now they don't, so I couldn't edit the video. Thanks for the patience
Was about to ping you regarding this! There goes my 5 seconds of fame😂
I was going to comment this
Also forgot to mention gamma rays turn a person into a mean, green and lean violent machine.
Sun? what sun? its permanently cloudy thanks to your lies about GLOBAL WARMING rubbish propaganda
I was confused initially. Thank you for the clarification
Thank you very much for all you do. Even with 73 years of life experience and college degrees in biological sciences, I learn something new from almost every video you provide. As a fictional science officer used to say, "Live long and prosper". 🌞
Vitamin D is not just limited to the bones. It is the most important vitamin and it has potential to cure any disease. People don’t understand it’s importance because it’s free
Yup. Take 50K IU during cold and see cold go away.
the amount of research that has gone into this video is just amazing. Thank you for this informational video . The best video in entire youtube about vitamin D ..
He's great - really informative
man, I love this type of videos. Just tons of information on why things are they way they are, and tips on how to make things better.
Wow...krish...you make everything so easy to understand... I'll never stop saying that 😅 All your video topics should be taught in school to kids, instead of subjects which are never used in general life.... My heartfelt Thank you 😍💕
Very well said
After long time of hearing and confusions about Sun and vitamin D, finally getting some clarity, thanks!
Labels on 3:12 need to be the other way around. Might be worth putting up a pinned comment to mention it so it’s not too confusing.
Yes. Will do!
Krish, I wish you were my professor! Thank you for your selfless work and time 🙏🏽
Useful points in this video.
Necessary to have normal levels of Vit D ( like every other Vitamin).
Get your levels checked.
If deficient, remedy thru Diet/supplements / exposure to sunlight.
All else is padding.
Wonderful video Krish👍 very informative and useful. Thank you !
Glad you liked it
Thanks for shedding some light on this subject... 🌞
This is on another level, sir you are doing service not posting content, as always science with comman sense is needed
very useful,😍 Your story telling before coming to topic is fabulous, please more vitamin video like this and Vitamin B12 videos
Sir I’m a doctor and a history buff. I love your videos for their accuracy and humour. Is there an audiobook of Masala Lab with your voiceover?
Thanks Krish for the excellent video. This clarifies a lot of the misconceptions.
Thank you
Awesome, Krish!! So simple to understand. BTW I have been prescribed Vitamin D supplement in the US and after this video I have learned the reason. Thanks!
I think there's a mistake in the labels at 3:12, it should be the other way round...
Appreciate the way you were able to articulate complex (highly technical) content in too little time; i will need my wife's advice to dig deeper (not on physics part); i may not hesitate to watch it 2-3 times more to further understand the nuance presented. good to learn from you and thanks for sharing your knowledge :)
Thank you
U r highly learned person,i am not finding anything to counter u
Why would you try
@@_Amit_Sunil good question
Fascinating! I remember reading about the earliest English people and how they had brown skin and blue eyes (going back thousands of years). The British government recommends that *everyone* take a vitamin D supplement, at least between October and March, due to a lack of sunlight, so even those of us who are very fair skinned need a boost in the winter, given our modern diets
Very informative video! 👌🏼
One healthy feedback: in between a lot of times you speak slow, for which I had to reverse and increase volume. Then later at times you speak loud, which hurt ears after having increased the volume and listening through earphones. Then again at places you speak slow...so on so forth was my experience in the entire video, which was irritating. 👎🏼
Please listen to this video yourself through earphones, then you will exactly understand what I want to convey. Then you may pay attention on your next videos. 👍🏼
@krishashok Sir at 03:13 your editor has made a mistake and flipped the non ionizing part with ionizing. Please have a look into that.
Yes, Ive commented as well. Can't fix videos post publishing
I was looking for a reliable video for this info from long time. It has clarified all the doubts I had, especially 'fact Vs myth', even many experts are divided on it, creating all sorts of confusion. Thank you!
Good one sir. How vitamin D affects mental health is also a factor to be discussed please. May be next time❤
I am very very surprised that Krish has not mentioned the fact that sunlight needs to fall directly on the skin and rays reaching the skin through clothes don't work.
Your explaination and the research you have done is just amazing, Thanks
Perceivable and abstract.🎉
Thanks for the video. I suffer from many skin diseases, the latest being vitiligo (loss of skin pigmentation) which began around 2 years ago. This led me to research Vitamin D extensively. I suspected an immune system that was out of whack. My Vit D test showed a result of only 18nl/ml. I began supplementing with around 3500IU a day. I also increased my protein intake significantly with eggs, red meat and organ meats. I am also taking Omega 3 supplements. I am also getting regular sun exposure, both morning and afternoon, whenever i can get it. I wear only short sleeve shirts to work now. The vitiligo lesions are more likely to get sunburned, so i am careful. Cancer is a risk, but interestingly, melanoma requires melanin, but there could be other problems of course. As a result of this routine, my Vitiligo has mostly stabilized, and the exposed areas of my skin are showing repigmentation. I am on a long journey to recovering from this horrible disease. In some ways i am grateful that this disease has revealed a nutritient deficit which, had i left it unaddressed, could have led to more serious diseases as i get older. Btw here are some interesting other facts on the topic:
1. Time slows down as you approach the speed of light. Photons travel at the speed of light and so do not experience time. So a photon created 8 mins ago on the sun that lands on your skin is experiencing both creation and destruction at the same moment. The same could be said of star light created hundreds of millions of years ago that lands on your eye.
2. According to a video by Medcram titled Light As Medicine, infrared radiation from the sun penetrates about 10cm into the tissue causing mitochondria within the cell to produce melatonin locally (instead of the night time Pineal gland operation). Locally produced melatonin helps to clear oxidative stress during daytime. So if you are unwell with the flu, then you should get some warming infrared (clothing is fine as infrared can penetrate). Incidentally this was the basis of solariums, which helped patients during the 1918 Spanish Flu. They didn't know what about the sun helped the sick, but it did and that's what mattered. A Nobel Prize was won but forgotten due to the discovery of Penicillin the following year (i think). Cheers.
Awesome info
I truly enjoyed this video. Thank you 🥹
I've officially added this to my 'Watch Every Month' list.
Thank you. Could you please do a video explaining what are "Vitamins" and the common myths about them.
Just today, I got tested and got my VitD levels back to normal. Less than an year ago my vitD was at insufficient levels and also had subclinical hypothyroidism. Since I read up about these to find out what's going on, I found that there is a co-relation between these two.
The same gene that reduces vitamin D production, apparently also has a hand in regulating thyroid functions.
So, if either of these are low, it would be a good idea to check the other one as well.
I tried going out to get some sunlight, but with the current state of climate, its almost like a gamble between sunburn or vitD and it makes me think its better to take maintainance level VitD and use suncreen.
P.S: From what I know, though it's theoretically possible for sunscreen to lower VitD, studies so far have only shown that it doesn't make any significant change. Infact I personally think, it could be the other way around, if we think about melanin production. Since brown skin is more prone to post- inflammatory hyperpigmentation and sunscreen prevents it, shouldn't it theoretically prevent melanin lowering vitD production or atleast even out the deficit of reduced uv exposure of sunscreen? I have also been using tyrosinase (produce melanin) inhibitor lately as skincare, so I wonder if that along with sunscreens slowing down melanin production could be a relief to the concern of it lowering vitD production. I'd love to hear your thoughts on this
What a knowledge…. Keep it up man
Thanks a ton
Thank you for this very informative content!!
Thank you so much! Amazing Video, can you talk about UV rays allergy how it is causing skin inflammation issues, seems there is no cure for folks who have UV allergy and more kids now a days get to lean on UV ray issues.
Brilliant video and well put
Good exposure to the need of Vit B12& Vit D/D3
Hi Krish,
I love your video! Very informative, backed by science!
Many thanks.
Amazing❤. Such a deep research u do. Very educative blogs. Thnx
Such a detailed explanation 🎉
Glad it was helpful!
Thanks for the in detailed explanation! For brown people, you mentioned 30 mins in the sun thrice a week is recommended. Can you give us an estimate of skin exposure for this time? I’m sure there’s a difference between just my arms or arms, legs and whatever possible
Not really sure. Let me check and get back
Hi Ashok. Your videos are really good and content appears to be well researched and presented with common sense and reasoning. Thanks a lot.
I have a question on going to Sun 3 times a day. Does it impact if we are behind a glass? Or is it have to be in direct sunlight? Another myth to be broken I guess.
1. 3 times a week. Not 3 times a day
2. Glass will filter out UV. This is why you can’t get tanned sitting next to a glass window
@@krishashok Thanks a lot. Yeah it was my mistake. I did understand it 3 times a week but somehow while writing used day.
So one has to be in direct sunlight. Thanks
Thank You Krish. Like the Beatles song " Here Comes the Sun" title for the Video.
Beyond the sun….The T-shirt!! 😂 Jokes apart…really informative and well researched content! Vit-D deficiency is so common. Much needed awareness video.👍
Great video, sir! Have some questions:
1. Is there a reason (say genetic variants) why some people cannot produce vit D in spite of sun exposure?
2. Some PPL say it is a steroid hormone so should not be supplemented.
3. Why are sun exposed mushrooms not a good source of vit D? Thank you
thanks for your work and wish you all the very best to keep going. W.r.t Vitamin D does ergosterol has any role? Pl clarify. Thanks.
Another superb video, sir..
One question though: Does the diffused sunlight or the sunlight coming through glass also help in Vitamin D synthesis?
I gotten myself checked sometime back, and found to be deficient. Having supplements now.
Glass will block UVB
@@krishashok Thank you..
great content sir, great work
What about Vitamin K2? Will sun exposure help in the production of K2?
A minor mistake at 0:29 That will actually be 25 zeroes. One power of 10 will be used to make 3.8 to 38 and rest will put zeroes behind.
Awesome. But, a small note - the reason why people are told to spend time outside in the Sun at Sunrise and Sunset is little to do with the UVA, UVB, Skin, or Melanin. Its to do with the effect of different rays of the Sun on the Photoreceptors in our eyes and the consequent effect on the Circadian cycles. 😉
Yes I’m aware! But you should realize that it’s the vitamin D thing being sold for early morning/late evening exposure as well
I live in singapore and hence close to equator. When I was tested for VIT D3 deficiency few years ago, I tried to spend time under the Sun with just shorts for 30 mins each day sometime between 12 to 2 PM. I did this diligently for a month. A test after did not detect any improvement at all. I started to take supplements now and am fine. Not sure if there is more to bodies ability to absorb the sunlight and to convert it into D3 as you explained(fair bit of process that goes through internally) to get it converted to D3.
Yep. Lots of factors. Amount of melanin and also genetics
I m having vitamin D deficiency and want to know the diet which is pure vegeterian.. As You do a great researvh on ur video.. I feel like relying on u and following you
If you are deficient , I suggest getting a test to confirm it, and speak to your doctor to prescribe supplements.
Diet wise - fortified milk and other fortified products like cereals or refined oils. Egg yolks if you are ok with eggs. Sun dried mushrooms
Lifestyle - 30 mins in the sun 3-4 times a week during 10-2 pm
Came to ur viceo after I got tested and taking precribed medicine from doctor... Will start sunbathing.. Thank you.. 🙏
Question what is the best way to be in the Sun for Vitamin D. Do you need to expose most part of your skin in the sun or just be in sun is enough? It’s confusing because there is a lot of theories around. Thanks a lot! Since I move to Nordic country where sun is rare my V-D gone so bad taking supplements and can see the results
Great explanation!! Unfortunately I have solar urticaria.Hence i produce histamines instead of vitamin d when i am exposed to the sunlight 😢
So well explained.
Thank you for the great content as always. I always save your videos.😅❤
Sir, I think there may be some mistake in the labeling when you explain about ionizing and non ionizing radiation..
Thank you, very well explained
Atlas ... Im confused with proper timing to get vit d and duration..
Im deficient ..
Kindly suggest
Don’t break your head. 30-40 mins 3 times a week anytime between 10-12. And eat vitD rich foods
@@krishashok thanks a lot
Any specific cod liver supplements you could suggest please?
Sir u r a priceless treasure to all of us
Thank you for the great content! ☺️
Ageing also reduces the ability to photosynthesize vit D, so as one ages, one needs to spend more time in Sun.
Hi! Can you please make a similar video for vitamin E ? Thank you!
@krishashok I just want to add that - Vitamin D is fat soluble, hence stored in the fat tissue and liver. Therefore a diet completely devoid of fat with lead to a deficiency as well
this all leads to a lot of confusion. so many things to remember in food. best is to eat everything in moderation meaning neither high nor low.
Thank you❤
Good info... one question: What happens when people apply cold pressed oil like coconut oil all over the body and sit in the sun? I have seen in the case of my grandfather and other elders that their skin does not tend to age or form wrinkles so fast and they had good Vitamin D levels throughout their life. They would sit in the sun at least once a week for about 30min or so...
Can you explain "Pancha Baksha Paramannam". Please
I have heard that dermatologists say sunscreen doesn't hinder the absorption of vitamin D. Who is saying the truth?
1.30 hrs per week means ... It's enough to get in single day , Which produces vitamin d for a week? Or to get it 2 days once?? Can you elaborate this in answer.
@Krishashok
Is there any connection between reduced Vitamin D and Diabetes?
Very useful information.
One of your best!
The height correlation seems a bit dubious. Most likely it is much more complex.
Im always fasinated by the amount of research you do to make a single video.. i love the way u bust the myths .. i am a teacher by profession and i literally include so many things that i learn from you in my teachings..very informative , great video.. ❤
Well done
It seems the wavelength diagram is reversed when you're explaining ionising and non ionising radiation.
Yes - I’ve pinned a comment as well
Any specific time of day for max vit d absorption & least uv damage
So informative! Thankyou!
Refined oil!?
Refined means something improvised,most people believe this
Unfortunaltely I have alergy of sun light and it produces rashes to exposed skin. :( No idea about my Vitamin D though.
marvellous info...
how to exact supplement and balance Vitd3 k27 & magnesium according to age weight and geographical area like india, kindly clarify Sir @krishashok
Taking Multivitamins daily is new trend...but there might be some overdose if taking without doctor's consultation... especially Vitamin D overdose
Absolutely. Do not supplement without testing + diagnosis
Can we bask under the sun through glass window?
Great video
Your T shirt.... ❤😊 And as usual Great Content!
How much body surface area has to be exposed ??
Most of our body parts are covered with cloths,especially for indian women.
Can sunlight penetrate through the clothes into in the skin from the vitamin D production point of view?
Shouldn’t the less availability of UV radiation but lower melanin balance out greater UV availing but higher melanin to produce humans of similar height? Surely there must be other factors at play here.
How a person doing night shift should consume vit D from sunlight?? Any specific time like 11-3pm to sit under sun as it's normal wake up time
One curious question though, why do animal skins produce many colours?
Amazing vidoe!
There are black african group of people that live near the equators and are some of the tallest in the world. Also black population in general are very tall. So, idk how sound that theory is.
Also, do black people living in europe and north America have lower bone density than whites? Since, their body recieves very low UVB radiation due to higher melanin
02:52 Correction:: Right to the UV are ionizing radiation and
Left side to the visible spectrum are non-ionizing radiation.
Yes - will fix it shortly
@@krishashok
Very nice dear great sir please 🙏 made video such kinds of very knowledgeable videos through another Hindi UA-cam Chanel
Wonderful
Hi krish, what about the difference with and without clothes.. Does that matter? If the clothes matter , what material is most suitable..
Good information,Nice 👕