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Sunlight and Your Health: An EnLIGHTening Perspective 

University of California Television (UCTV)
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(0:45 - Main Presentation) Michael F. Holick, PhD MD, Boston University Medical Center gives an energetic talk on the positive impacts of sunlight on your health. How can we balance current thinking on the negative effects of sun exposure with new research on its benefits? How does sunlight help in the production of vitamin D? Join Dr. Holick as he explains how sunlight reaches us, how it is absorbed by the skin and much more. Recorded on 12/09/2014. [2/2015] [Show ID: 29075]
Vitamin D for Public Health - Integrating Sunshine, Supplements and Measurement for Optimal Health 2014
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6 янв 2015

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Комментарии : 272   
@eugeneesguerra3420
@eugeneesguerra3420 4 месяца назад
Im from philippines where we have sun all year round and we cannot avoid sun exposure and inspite of this skin cancer is almost unknown.
@rroulette2660
@rroulette2660 4 года назад
Everything in moderation.Common sense people, I never believed the AMA ! I've lived worked and played in the sun for most of my life. I'm from Florida. I grew up on the beach. I've worked a cattle ranch most of my life . The sun is part of our health
@vincentgadson4304
@vincentgadson4304 Год назад
Great information. 😊
@no22sill
@no22sill Год назад
Sun is important for our sanity too
@lile5341
@lile5341 4 года назад
Amazing that so much benefit can derive from something as free as the sun. Especially in this pandemic. The answer is here in mother nature all along and most of it free
@flaviogutierrez-willer5248
@flaviogutierrez-willer5248 4 года назад
This knoledge on vitamin D is special important now, to enhace our inmune system with COVD_19 pandemia
@chazgurrero3090
@chazgurrero3090 4 года назад
I live in San Diego. Yesterday I took a nap for 3 hours felt so good from the sun in sure I've got more of a dose of vitamin D. Have a great day.😜😜😜
@katiie7
@katiie7 4 года назад
Too bad us in Canada are stuck with no uva/uvb till april and even then not adequate levels. Cannot wait to go south.
@flaviogutierrez-willer5248
@flaviogutierrez-willer5248 4 года назад
@@katiie7 You may tray in pills.more than 600 units per day in regular way
@Germatti13489
@Germatti13489 4 года назад
@Mambo Jambo Actually there is...you should take two to three vitamin D3 everyday if You're Not Innocent me location. Ir you are deficient, which most people are, it helps with sleep, depression, and fatigue.
@dana102083
@dana102083 4 года назад
@@Germatti13489 2 to 3 of what dose? 400 iu or 1000 iu.. I take 2000-3000iu in summer and 5-6000 iu through winter for this Canadian that cant get out much due to health.
@veg
@veg 8 лет назад
Vitamin D gave me my health back ♥
@Test7017
@Test7017 8 лет назад
what was wrong with you? and how much time did you spend in Sun
@xantonify
@xantonify 8 лет назад
Same. I was so tired i couldn't sleep, i had insomnia. I could barely walk because i was dizzy and nerly started fainting. Vitamin d3 and k2 combo did cure my health issues totally.
@sagek7949
@sagek7949 5 лет назад
Thanks for sharing🙏🏼 inspired me!
@mac2brown
@mac2brown 4 года назад
@@xantonify how much did you take?
@xantonify
@xantonify 4 года назад
@@mac2brown I took 25 000 iu for a few months then i take 10 000 iu d3 daily for maintaining my levels.
@Bobby-hn3cu
@Bobby-hn3cu 9 месяцев назад
Texted positive for Covid late summer 2022. After a week of severe symptoms i decided to sit under the sun one afternoon to help warm me up. 45 minutes later I went to bed and woke up energized. I still tested positive for another week but all my symptoms were gone. Weather was above 70 degrees.
@davidwho7847
@davidwho7847 2 года назад
Few videos have me glued to my computer screen, but this one did! Thank you for posting this.
@ebenburger111
@ebenburger111 4 года назад
Bro Holick, I might not agree with you regarding your theory of evolution, but I highly respect you. I bought your book and it will forever change my life and that of my kids. I take my 3 boys out of the house, shirts off and make sure the 4 of us get at least 10 min of quality sunlight 3 times a week. My youngest boys 5 yrs old) is already bubbling over with energy and he says that the sun is his 'Happy Vitamin'. Bro Holick, thank you for everything that you've done. Thank you for being brave in spite of all the opposition. Thank you for Loving and fighting for mankind. I pray God's richest blessing apon you and your family. You're my hero. I so wish that I too can impact as many lives for the good as you do... Your book is deffinately one of the most inspiring books on my list yet... Bless u.... Eben.
@francoisBonin-phils
@francoisBonin-phils Год назад
Imagin how God who created us is a Genius!
@MB031
@MB031 8 лет назад
Brilliant research and information !! Thank you so much for sharing this with us.
@MariettaFarley
@MariettaFarley 4 года назад
Love these Dr Holick vids. So much fun!
@gudmundurrafngeirdalbragas1513
What a wealth of info packed into one lecture plus with all this humor included. I liked especially when the doctor showed his barren chest on two occasions. :)
@alexandrosvassaras4302
@alexandrosvassaras4302 4 года назад
Amazing Dr Holick ! ;) i must have seen this lecture as many times as Braveheart ! Dakujeme pan profesor !
@engin7787
@engin7787 2 года назад
I love every word you said. It is worth gold, it is exiting, it arms us to protect from evil conspiracy to the humanity!
@kenishahammond3935
@kenishahammond3935 4 года назад
I love my melanin! Excellent information!
@AydaWalsh
@AydaWalsh 4 года назад
Excellent and informative presentation! I would be curious to see any impact on the sun through the eyes as well and how the combination would make a difference - THANK YOU!
@lincolnthinking
@lincolnthinking 4 года назад
absolutely, get yourself some sensible exposure to the free sunshine ~
@alanw7134
@alanw7134 4 года назад
Wonderful presentation.
@DaviddeBoisblanc
@DaviddeBoisblanc 8 лет назад
Very good overview.
@tybalttybalt
@tybalttybalt 4 года назад
That letter broke my heart
@neptronix
@neptronix 8 лет назад
Most excellent! than you for posting this!
@tanganman
@tanganman 9 лет назад
What an informative and well-paced presentation! Well worth watching. I need to check my D level soon.
@bethsabath
@bethsabath 3 года назад
My level is 87 in my blood test.
@oscarholley891
@oscarholley891 2 года назад
Don't check it until next year because me and my ppl will submit the hidden affect of the moon on vitamin D and the moon's affect on excessively hairy ppl in certain areas of the world where the moon's rays are not clouded by pollution
@dianetonacia2122
@dianetonacia2122 4 года назад
Wow awesome Best yet info thankyou
@chrisweidner2617
@chrisweidner2617 4 года назад
14 years in the sun in Vietnam. Heaven. Now one winter in the Midwest. Hell.
@thejerryj
@thejerryj 8 лет назад
Thank you for another sterling presentation Dr. Holick. I understand that it is crucial to set the ratio of D3 and K2 at 10 to 1. I have been given to believe that vitamin A was an important part of supporting this "Dynamic Duo" in the healing wonders they work. Can you give me some insight into the ratios between these vitamins to allow then to work their best together?Thank you, for your time and effort in sharing your knowledge and understanding.
@jamesallan1883
@jamesallan1883 Год назад
U of C doesn't post these types of talks now. Too bad they we're evidence based and of great value and benefit to all.
@terryritchie6148
@terryritchie6148 4 года назад
Brilliant 😊
@glacialimpala
@glacialimpala 3 года назад
19:25 To deny that we belong in the Sun, at least a part of the day, is to deny evolution.
@Presidentenumerouno
@Presidentenumerouno 2 месяца назад
Great presentation, the slides help...
@kryptonegalaxy3004
@kryptonegalaxy3004 Год назад
thank u so much...!
@richardmarkiewicz3274
@richardmarkiewicz3274 4 года назад
The.most educated lecture I ever listen to. Big Thanks
@dougdelt
@dougdelt 4 года назад
Get the iOS app dminder. I use it every day. It allows you to press a button and it will tell you from your geographic location, and your self reporting of the cloud cover, how much vitamin D you’re getting per minute. And by the end of your time in the sun, you will have a total computed in international units. Also the dminder tells you exactly when is the right time to go out in the sun and when it will not be effective. It shows you on a arc where the sun becomes available in your area. Every morning I use this to calculate what is the approximate time I will go out to try to get about 25 minutes of sunshine. And as he says in the video, the effect of sunshine is last 2 to 3 times longer than the same international units in a pill.
@Elena-un7rr
@Elena-un7rr 6 лет назад
My story of Vitamin D and recovery: "A Lifetime of Misdiagnosis: Triumph Over Illness" by Eva Cardoza King
@theruddyone6443
@theruddyone6443 2 года назад
is this a book u wrote
@51_cent
@51_cent 26 дней назад
Sunbathing an hour a day (as able) reduced symptoms of my plaque psoriasis by 95 percent.
@lile5341
@lile5341 4 года назад
Vit D from the sun last twice as long in the body as Vit D supplement
@dlarge6502
@dlarge6502 4 года назад
Thats because a suppliment gives you a tiny amount, 1000 IU. Half an hour in the correct sun (where there is UVB) looks to generate around 10,000 IU. The liver then converts this into a form that can last up to 3 weeks in the blood and is converted as needed by the kidneys into the active form of "Vitamin D" Where I live it is very hard to get UVB. In the UK UVB is only available during half of the year and only for around 2 hours a day while the sun is high enough. There is 0 UVB in winter here. None. Yet nobody is telling anyone to take the supplements! Even though they are only 1000 IU. As "Vitamin D" is not in the diet in significant amounts, the supplements should practically be posted through your door by the NHS to stop you getting so ill during winter.
@glynthomas3976
@glynthomas3976 4 года назад
dlarge6502 👏
@karoo_bushman6880
@karoo_bushman6880 3 года назад
@@dlarge6502 Hear! Hear!
@douglasthompson2740
@douglasthompson2740 4 года назад
PS: How much UVA is in reflected sunlight such as snow or on the ocean (water)? Potency in the reflected compared to the direct, also amount in combined?
@lyngaspar8545
@lyngaspar8545 4 года назад
Thank you for the information. It helps a lot. God bless🙏
@777videos7777
@777videos7777 3 года назад
One thing he wasn't explicit about and should have been was the vast discrepancy between Black and White rates of normal levels of Vitamin D levels in the US and the amount of time it would take to reach 60 ng/l. According to his graph it should actually take African Americans 10-20 times longer to reach 60 ng/, which would equate to having to be exposed at least a couple of hours per day of sunlight compared to the minimum recommendation of 15-20 minutes for Caucasians. This has vast implications, especially with regard to Covid-19 cases, of which 30% or more are attributed to African Americans. I wish that experts like himself and others would make recommended sunlight exposure times more clear, because saying the sun can cure all these other ailments then further exposes the health disparities in the Black community which isn't hardly being addressed at a basic level.
@MrMichaelkarp
@MrMichaelkarp 4 года назад
In the winter where I live, I cannot get sufficient exposure to the sun. So, I have the following questions about in-home UVB sunlamps: efficacy, safety and wise usage. This is information I cannot seem to find.
@mac2brown
@mac2brown 4 года назад
Im interested in what you have since found on the subject.
@kathleenmurphy2379
@kathleenmurphy2379 4 года назад
And one of his other lecturers I believe it's called the delightful vitamin D or something like that that's here on RU-vid he talks about a lady who had terrible bone pain and she went to tanning beds look up the other video about him.
@mac2brown
@mac2brown 4 года назад
It all reminds of the happy lights used in Alaska.
@skarz2011
@skarz2011 7 лет назад
Indeeeeeed
@florencejonas2195
@florencejonas2195 3 года назад
Quiz: How many ‘indeeds’?
@claudiokabanata3325
@claudiokabanata3325 5 лет назад
Sunlight alleviates my palpitations
@thisbullrocks6030
@thisbullrocks6030 4 года назад
just take it in small doses and build up your strength to it - man as well as all animal and plant life was meant to live with the sun
@chuyruiz14
@chuyruiz14 4 года назад
& the most important to me is how long en I suppose to do it??
@chuyruiz14
@chuyruiz14 4 года назад
In North America & South America when is the best time to sit out in the sun 🌞 ??? What time of the day ?? I normally sit out when the sun is rising... or setting....
@elsagrace3893
@elsagrace3893 4 года назад
For max Viamin D noon time is best to 2 hour before and 2 hours after
@joncunningham9925
@joncunningham9925 4 года назад
All day long! Whenever the SUN shines get out into it. Fishermen fishing all day long are the healthiest people on earth. IMHBPO
@jermainedawson7862
@jermainedawson7862 2 года назад
Show to us those who fortunate to have sunlight, and those who are unfortunate
@1aliveandwell
@1aliveandwell 3 года назад
Can you make too much vite from sun lamps? Can we sun or sun lamp our food is it just yeast or certain food types (I grow some food, apples, collards... ? ) If make less melanin (maybe nutrient defic) will have less vite D made in skin? So any skin, face, arms, torso legs all same amount? sorry for all the questions, just very interesting. Heard DrGominak say primitive yeast used to make vite D2, wonder if still does. labs for 25H D and but what about active for 1,25oh? Someone told me he had low D lab but later tested active form and was high(had sarcodosis(?). What if already have low BP would sunlight make worse or only if need lowerBP.
@bluehairkim1
@bluehairkim1 3 года назад
Do red light panels produce any vitamin d?
@eerbatsirk
@eerbatsirk 4 года назад
His comment about a statin not effecting cholesterol synthesis in the skin is interesting. But just to be clear, Statins do negatively effect cholesterol in our bodies. Cholesterol LDL and HDL are protective. But you want high HDL and high LDL, And triglycerides to HDL ratio you want less than one. It's the best predictor of cardio vascular risk and insulin sensitivity. People who live longest have higher LDL cholesterol. Cholesterol, "plaque" in arteries is blamed for the cause of the inflammation and block. It is at the sight of the inflammation, too help repare, acting as a band aid. It's insulin resistance from sugar and excessive carbohydrates, and bad oils (PUFA's) in our western diet that causes heart disease, cancer, diabetes, and autoimmune disease. Red meat and saturated fat and cholesterol is not to blame.
@serendipify
@serendipify 4 года назад
Krista Zurawski You have it exactly backwards. It’s the animal protein and fats that cause heart disease and cancer and diabetes. The science is very clear and overwhelming. Check out Dr. T. Colin Campbell, Dr. Michael Greger, Dr. Esselstyn, Dr. Neal Barnard and others for a preponderance of real science on this. Be well
@eerbatsirk
@eerbatsirk 4 года назад
@@serendipify Cholesterol LDL and HDL are protective. But you want high HDL and high LDL, And triglycerides to HDL ratio you want less than one. It's the best predictor of cardio vascular risk and insulin sensitivity. It's insulin resistance from sugar and excessive carbohydrates, and bad oils (PUFA's) in our western diet that causes heart disease, cancer, diabetes, and autoimmune disease. Listen to Fundamental Health with Paul Saladino, look up Dave Feldman's Cholesterol Code. It will blow your mind! We've been lied to from bad epidemiology bad studies, ever since Ancel Keys false Seven Countries Study! Where he purposely left out countries, like France that eat red meat and saturated fats with little to no heart diseases, that didn't back up his hypothesis.
@pavlossideris3973
@pavlossideris3973 4 года назад
I try not to use artificial supplements - therefore is there food that would give me sufficient dosage of vit d ? In the lecture mushrooms are recoomended and google also mentions fatty fish etc... Would food on its own provide me with adequate vit d or do you think that supplementation is a must ? Thanks !!!
@taliatut
@taliatut 4 года назад
Pavlos Sideris pastured lard has the highest levels of D. You may still need a supplement to bring the levels up first (lab test needed to check that) and you need the sun in any case to activate the vitamin.
@willywonka077
@willywonka077 4 года назад
Very good video but the only thing is the one question that most people want to know is sunlight a cumulative and other words can I get sunlight today and get a whole lot of sunlight exposure for today and then the next 4 days not have any sunlight will that one day of many hours of sunlight be a cumulative to last for the rest of the week ....in other words can your body store vitamin D ?
@SerendipityRules
@SerendipityRules 4 месяца назад
Yes it can
@phsutariya
@phsutariya 2 года назад
In Western India Gujarat State how much sun light exposure is required to produce enough Vit D.Thanks
@truedrew11thed5
@truedrew11thed5 5 лет назад
So dope
@Germatti13489
@Germatti13489 4 года назад
I had a sunlamp in 1972, put baby oil on both my lower legs, clipped the sun lamp to the back of a chair, and put my legs up on the seat but forgot to set a timer. Once I begin reading I forgot all about my legs... for about an hour. The next morning, I knew it was bad, I had long blisters on the front of each leg and ended up with second and third degree burns.
@dlarge6502
@dlarge6502 4 года назад
Yes that would happen when people do silly things with UV
@eerbatsirk
@eerbatsirk 4 года назад
I heard that we only get UVA sunrays through windows, and blocks the UVB from coming through, which causes damage to our skin. But now it sounds like our skin is reacting to the imbalance of only getting UVA and making the protective melanosomes deeper in our dermis so it isn't protecting us from UVB rays from entering at the top layer, epidermis. Is that correct? I thought UVB, is the beneficial rays that makes vitamin D, so it wouldn't be causing damage. What does too mutch UVB do?
@joncunningham9925
@joncunningham9925 4 года назад
We need the SUN just as God gave it to us. Living in a Big house and looking out will kill us. We need to be outside the house and live as they did many moons ago or quickly die . IMBPHO
@PrincessTala83
@PrincessTala83 Год назад
Too much UVB burns your skin
@MrApplewine
@MrApplewine 7 лет назад
What if you only get UVB like with a UVB lamp? I was going to order one, but now I'm wondering if I need the whole spectrum, which I can't get with a simple solution from an artificial lamp.
@z.deutch1334
@z.deutch1334 7 лет назад
You don't need the whole spectrum. UVA rays are damaging so that's one EMR you don't want extra exposure to. Get a UVB lamp or take vitamin D3, and get a Near Infrared (NIR) lamp - the sun emits infrared and the near wavelength is highly beneficial to the skin and body. He mentioned that exposure to the sun increases nitric oxide, well that comes from the sun's near infrared range.
@rist98
@rist98 6 лет назад
UVB is the only part of the spectrum that we don't get in our artificial environments, that we would get from the sun. All others, UVA, Visible light, Infrared. All of it, we have plenty of, in out artificial environments. Its the UVB that is lacking.
@karoo_bushman6880
@karoo_bushman6880 3 года назад
Check the 'Osram Ultra Vitalux 300W' lightbulb, it has almost the full spectrum of sunlight. Ancient technology, now forbidden by 'Big Sunscreen'. I measured the output with a VEML6075 sensor and found it to output 27% UVB, the rest of UV energy ist UVA (zero UVC) and then very bright white light so you automatically squint when looking at it. I think it's as close to equatorial 12 'o'clock sunlight as possible. I didn't measure NIR or IR output but suspect not much, so for that you'd need one of those 660nm + 850nm LED arrays (which I also got). We use it during the winter, it significantly increases our mood and sleep quality (my sleep tracker says 8 hours and 3 hours of deep sleep every night, my wife even 4h deep). All my aches are gone. My blood pressure has dropped. I have more energy during the day. No seasonal flus/colds. VitD levels high, no supps needed. Can imagine more benefits but those are the ones we noticed. Great long lasting tan as well. We hang two of those bulbs 70cm away from our full naked body over the bed, one for upper body and one for lower body. We use microphone stands to get them that high up and you can move them around too. We do a 3-4 minutes front and then 3-4 minutes back. Start with one minute, check if you get red, then increase a minute every day. You should get a tan but not a burn, then you're getting enough. You can also just use one bulb, but then your legs will not get the preparation and protection for summer. Best would be a whole array and then more distance (1-1.5meter) so you get more even exposure, but this would mean more electricity used, so we use only two and move around a bit (turn face etc.) to get more spread out exposure. The 660nm + 850nm NIR/IR LED panels have proven to increase Collagen and repair damage from sunlight in the skin, we include this (red light therapy) to mitigate the detrimental effects of UVR on skin. All in all it's like living in the tropics and feeling good year round, yet scientifically administered and hopefully because no burn no cancer and because NIR/IR no wrinkles or spots. That's what science says anyway.
@SpaceCredits
@SpaceCredits 2 года назад
The Sun is an entity a God for thousands of years we've seen it as that, the Sun is healing and provides us with spiritual benefits. -> Test it out yourself. Don't let culture influence your mind otherwise you're going to still think candy breakfast cereal is good for your health
@VivRob
@VivRob 4 года назад
What type sunscreen should I use when I am getting sun during the 10am to 3pm? I’ve heard some of the components of sunscreen are bad for you and they go through your skin and into your bloodstream. Is that true?
@technojunkindatrunk
@technojunkindatrunk 3 года назад
Yes, it’s true. Sunscreen is NOT good for us....they put s-- in it to cause skin cancer. All designed to keep you out of the sun... and sick.
@surfershaper
@surfershaper 3 года назад
Mineral based with zinc
@kostaborojevic498
@kostaborojevic498 Год назад
Just cover your face with a hat.
@marykelly6929
@marykelly6929 3 года назад
I have vitaligo so can’t take sun.Advice please
@ilanadoc9873
@ilanadoc9873 7 лет назад
So, If I am exosed to direct sun at noon in the summer , do I get 20'00 IU in an hour ? (assuming my skin is not dark and not very white ) ?
@thisbullrocks6030
@thisbullrocks6030 6 лет назад
you will get that in about 20 mins - even more in an hour
@Noor-jw2tn
@Noor-jw2tn 4 года назад
@@thisbullrocks6030 Blue light is strongest at noon. Better to expose before 10am and after 2 or 3 pm. These times will give you a full spectrum
@TheUtuber999
@TheUtuber999 4 года назад
@@Noor-jw2tn Before 10 am and after 2 pm, the ratio of UV-A exposure is much higher relative to UV-B exposure. You are better off sunbathing between 10 am and 2 pm, when the sun is higher in the sky and there is less atmosphere to impede UV-B rays.
@Noor-jw2tn
@Noor-jw2tn 4 года назад
@@TheUtuber999 between 10 and 2pm is best to get full exposure. You only need 15 minutes per day. You will not burn. Before that time is for different reasons. More for energy and allowing light into your eye gate without the blue light.
@elhadjzeze3118
@elhadjzeze3118 7 лет назад
I have a problem :when I am in the morning spend half of my memory and at night I be on the full concentration ,and the strength of my memory. and i'discovered that the sunlight is the reason and i'was traveled to a place with clouds returned my memory again.what is the solution for this problem or any research on this matter I suffer so much it is difficult for me Thanks for hellp.
@patricke8627
@patricke8627 4 года назад
Skip to 24:30 PRICELESS
@petercyr3508
@petercyr3508 4 года назад
Watching to see if he says how long to wait before showering after getting a dose of sun to allow vitamin D synthesis
@kathleenmurphy2379
@kathleenmurphy2379 4 года назад
And one of his other lectures he says you don't have to wait at all it's already below the surface it's made in live skin tissue if I remember correctly. And remember it's dead skin skin cells we wash off
@rickknight3823
@rickknight3823 4 года назад
I remember hearing elsewhere that sun starts the process of making the "hormone" not vitamin D on the skin - 2 days showering without soap and only water helps with absorbtion.
@kathleenmurphy2379
@kathleenmurphy2379 4 года назад
@@rickknight3823 I think I posted here his second lecturer and he said the hormone is made below the first layer of skin so you can't wash it off that's a fallacy
@kathleenmurphy2379
@kathleenmurphy2379 4 года назад
@@rickknight3823 I also was under the assumption you should wait a while to shower because you'd wash the vitamin D that is actually a hormone not a vitamin off your skin it needed to be absorbed. But this scientist in another lecture said it's made below where you can wash it off
@rickknight3823
@rickknight3823 4 года назад
@@kathleenmurphy2379 we'll have to try and cross reference that bit of info then. This scientist doesn't look the healthiest.. although that may have nothing to do with his ability to absorb and create D hormone...
@aryankarki7900
@aryankarki7900 6 лет назад
Pleass listen to Dr jack kruse.
@askjdog
@askjdog 3 года назад
He changed my mind on getting tattoos. Still need to buy some blue light blocking glasses.
@chuyruiz14
@chuyruiz14 4 года назад
Wow the last person who asked something was 4 years ago .... hope someone answers....
@yallaworld1575
@yallaworld1575 4 года назад
How to I join
@thetrillianaire
@thetrillianaire 3 года назад
now this is a man who knows how to have some fun with a slideshow
@iMiker62
@iMiker62 3 года назад
This would have been a wonderful community lecture if not for the inconsistency of the the volume coming through our speakers...when the good professor acknowledges his graphs or chart assistants....he turns his head into them and away from the microphone. It happens in all of the lectures done in this format. Perhaps have the speakers wear a microphone where it follows their voice output.
@jamesallan1883
@jamesallan1883 Год назад
Can also turn CC on for video.
@zarinhirani8928
@zarinhirani8928 4 года назад
Which is the right time to take Sunbath in Muscat Sultanate of Oman
@wisconsinfarmer4742
@wisconsinfarmer4742 3 года назад
Every time with moderation.
@altagraciarodriguez182
@altagraciarodriguez182 3 года назад
Can we humans use the pet uvb lamps to produce vit D?
@chriswilkes2438
@chriswilkes2438 4 года назад
You need a clip on mic
@doletawood5061
@doletawood5061 4 года назад
How do I know if a tanning booth is lying about full spectrum light? I'd like to try tanning.
@joncunningham9925
@joncunningham9925 4 года назад
Get in the SUN and if you are in an area where you never see the sun, then move to where the SUN still shines. Only the SUN will heal you. Pills cannot replace Natural Light! IMBPO
@mac2brown
@mac2brown 4 года назад
@@joncunningham9925 where does it shine!!! Im in cali and brr!
@joncunningham9925
@joncunningham9925 4 года назад
@@mac2brown YES frigid everywhere. Actually in west Texas. South America and the whole world is very cold now but this summer it will be hot in the USA and cold everywhere else. Israel also gets lots of sunshine. We're headed for a global Ice Age except for the United States this summer. They will cause heat and rain to stop the farmers planting. You watch. Stay warm and get as much of Sun's Vit.D as possible to stay healthy ! IMO!
@girlinterrupted9145
@girlinterrupted9145 4 года назад
That was my question, does research show less cases of cancer in areas where there is more opportunity for exposure ... Excellent presentation
@danam.5433
@danam.5433 4 года назад
Unfortunately, in Australia where there is plenty of sun, there is also plenty of skin cancer, melanoma.
@askjdog
@askjdog 3 года назад
@Dana M. - Amongst the non-natives primarily I imagine, and wonder what the correlation is to diet, lifestyle choices, and overall health.
@douglasthompson2740
@douglasthompson2740 4 года назад
What is the correlation between UVB exposure to the skin in various latitudes and seasons with clear or overcast conditions? In the peak of summer on a heavy overcast day I am assuming that the UVB levels would be nonexistent?? At 55 degrees N latitude in a temperate coastal rain forest what amount of Vitamin D3 can be accumulated over a typical summer? Since we have less than 100 sunny days year round which includes partially cloudy days and precipitation on 234 days (averages some years can be considerably darker and wetter) the manufacturing of Vitamin D3 in a normal body (which brings up the question of relationship of extremely obese, large surface area to a slender small surface area production of D3?) would be insufficient for good health?? Is artificial sunlight better than supplemental D3? I appreciate the presentation to help balance the near hysterical phobia against sunlight that has cropped up in the past thirty years. Doug
@dlarge6502
@dlarge6502 4 года назад
Good question. Basically in the UK there is no significant UVB from the sun after October till May. I'm wondering why we are not told to supplement...
@mocha100blu3
@mocha100blu3 4 года назад
"In Deed!" Thank you for posting. My doctor put me on 50,000 IU of Vitamin D Per week. I will get some Sun to knock off these pills!
@Data_-xw7yw
@Data_-xw7yw 4 года назад
MOCHA100 BLU same here, but don’t do it until you see progress. Last June I went to the beach , I was under some trees and developed an allergy that has lasted until today. Anytime I go out to the sun even if is for 5 minutes I faint!
@mac2brown
@mac2brown 4 года назад
@@Data_-xw7yw my kid gets sun poison and faints too...so do I and we are dark!!!
@kathleenmurphy2379
@kathleenmurphy2379 4 года назад
I don't think he's saying anything about reducing what the doctor tells you to take by staying out in the sun.
@ChrisGroggyCreaser
@ChrisGroggyCreaser 2 года назад
**Dear UCT,In England - we Don't get much sunlight!!... :( *Can using sunbeds help us??... :)
@linhphan6508
@linhphan6508 10 месяцев назад
🎯 Key Takeaways for quick navigation: 00:45 👨‍🔬 Holick introduces himself and the topic of the positive health impacts of sunlight. 01:13 💡 Sunlight affects skin through its radiation, not heat. Skin pigment protects against sun damage. 02:46 ⚠️ Excessive sun exposure increases skin cancer risk. UV damages elastic tissue, causing wrinkling. 04:07 🔬 UVB makes vitamin D in skin. Visible light penetrates deeply. UV effects depend on wavelength. 08:29 🛡️ Melanin protects skin like an umbrella over cell nuclei. Tanning is the body's natural sunscreen. 12:38 📈 Sunlight treatments were popular until antibiotics and pharmacology took over in 1940s. 19:43 💊 Diet/food can't provide enough vitamin D. Sun exposure is the best natural source. 29:23 🧑🏿‍🤝‍🧑🏻 Darker skin needs 5-10x more sun exposure to produce adequate vitamin D. 47:17 💉 Higher vitamin D levels reduce cancer risk. Sunlight regulates genes and metabolism. 52:30 ☀️ Sensible sun exposure has no downsides. Supplements help achieve healthy vitamin D levels. Made with HARPA AI
@rustymcgee7488
@rustymcgee7488 4 года назад
I think when he explained how darker skinned individuals need to stay out in the sun longer to get the same level of vitamin d as caucasians, he could have gone into deeper detail (albeit, I’m sure his audience are a bunch of caucasian just like himself so its not important to point this info out to them, however it should be if you are really trying to learn the most) While it does take darker skinned individuals longer to achieve the same level of vit d as a light skin individual that is perfectly fine & is a good thing because they can actually take longer amounts of time outside in the UV rays without experiencing adverse effects like caucasians who would suffer skin burn and mutations that could ultimately lead to skin cancer. Darker skin individuals do not face this drawback as readily as light skin people & are allowed more time outdoors in the sun to get their vitamin d freely with little drawback. Caucasians need to be more careful & its a adequate mutation for them to get their vitamin d, but a perfect design for darker skin people as he mentioned early in the video. The darker skin is actually much more beneficial than having pale light skin. The darker skin can spend more time outdoors without adverse effects & is more resilient. Just something i think he may have forgot to add. Much of this information is targeted to white people...we need unbiased delivery of information. Not one sided leaning info. Shame!!!
@User.Joshua
@User.Joshua 3 года назад
Thanks! Most of the literature or videos definitely target one demographic. I simply have to guess or extrapolate from their given values.
@itsjustme5620
@itsjustme5620 2 года назад
They gatekeep a large portion of information that specially benefits dark skinned people
@sumanjsh
@sumanjsh 6 лет назад
What about benefits of sunlight for our eyesight?
@thisbullrocks6030
@thisbullrocks6030 4 года назад
I healed my eyes after throwing out my sunglasses - I used to have a problem seeing distance - very sun sensitive - then I decided to get rid of them and I also take 12 mg of astaxanthin - now my vision is perfect - no glasses - I am 62... you need the uv light for sure
@blueskythinking8312
@blueskythinking8312 4 года назад
@@thisbullrocks6030 that's all u did to heal ur sight? That's amazing
@thisbullrocks6030
@thisbullrocks6030 4 года назад
pretty much - I take chlorella daily … as well as vit D - but I think getting rid of your sunglasses is key
@elsagrace3893
@elsagrace3893 4 года назад
This Bull Rocks I’ve not worn sunglasses my entire life. At 50 I needed cataract surgery.
@joncunningham9925
@joncunningham9925 4 года назад
God does not make mistakes in what he creates. IMO
@saginaw60
@saginaw60 4 года назад
I bask for 10 minutes a day with a UVB lamp , but at what point does one worry about skin damage ?
@karoo_bushman6880
@karoo_bushman6880 3 года назад
Get a 660nm + 850nm LED array and expose the same area you expose to UVB. Get very close (0-30cm) and do 10-15 minutes sessions, once a day. Scientifically shown to improve collagen production and mitigate any damage done by UVR. Even protects for future UVR if done before. Many peer reviewed studies showing this, do a google.
@jermainedawson7862
@jermainedawson7862 2 года назад
Listen, if you going to make sense about sunlight , you got to break it down so that we see the difference with those who are fortunate to born and live where sunlight appears everyday, show us those who fortunate, and those who are unfortunate, there life spon , who live longer , is it , those who have the sun, or is it those with limited sunlight, remember stress kill us, so if human beings short of anything that is of health benefits, they likely to die earlier than they should
@kendalharris4813
@kendalharris4813 4 года назад
Some plants thrive in direct 🌞 some plants are better in shade or need less 🌞 just maybe people are the same.
@SaxMonsterSteve
@SaxMonsterSteve 2 года назад
hahahaha omg what a presentation. thanks!
@matthewalvarez-mahoney7801
@matthewalvarez-mahoney7801 3 года назад
Wow. The sun in the beginning looks like the model of coronavirus. Could sunlight have something to do with the cure?😏
@zarinhirani8928
@zarinhirani8928 4 года назад
Temperature is 40 degrees now
@chuyruiz14
@chuyruiz14 4 года назад
Not really sure of Talking vitamin D supplements... some say it’s bad ....
@Noor-jw2tn
@Noor-jw2tn 4 года назад
Listen
@joncunningham9925
@joncunningham9925 4 года назад
Pills will never replace the SUN!!! Pills have so much junk in them that they will do more harm than good!!! IMO
@jjayneartworkx
@jjayneartworkx 4 года назад
🌞🙌⚡💛
@livelearnandteach7402
@livelearnandteach7402 3 года назад
It is funny how much advice we have been given over the last 30-40 years that is completely wrong......in fact you need to completely reverse the advice to improve your health.
@anniep9294
@anniep9294 3 года назад
Sunlight is so important use your common sense while is sun
@istp1967
@istp1967 4 года назад
This dude looks like me; but with a bigger nose and glasses 😂😂😂
@marykelly6929
@marykelly6929 3 года назад
I have no pigment .
@vicplichota
@vicplichota 9 лет назад
Cosmic rays are NOT part of the EM spectrum.
@wisconsinfarmer4742
@wisconsinfarmer4742 3 года назад
True, has high particulate properties.
@ENFPerspectives
@ENFPerspectives 2 года назад
1Lord, our Lord, how majestic is your name in all the earth! You have set your glory in the heavens. 2Through the praise of children and infants you have established a stronghold against your enemies, to silence the foe and the avenger. 3When I consider your heavens, the work of your fingers, the moon and the stars, which you have set in place, 4what is mankind that you are mindful of them, human beings that you care for them? c 5You have made them d a little lower than the angels e and crowned them f with glory and honor. 6You made them rulers over the works of your hands; you put everything under their g feet: 7all flocks and herds, and the animals of the wild, 8the birds in the sky, and the fish in the sea, all that swim the paths of the seas. 9Lord, our Lord, how majestic is your name in all the earth! - Psalm 8
@joaopedrogr
@joaopedrogr 2 года назад
29:15 Caralho, até aqui tem Xuxa com Pelé
@eugene5323
@eugene5323 4 года назад
the problem here is getting a quality vitamin D supplement
@sc4894
@sc4894 4 года назад
Why does he look familiar
@philippesilva2275
@philippesilva2275 4 года назад
Bernie Sanders
@sc4894
@sc4894 4 года назад
Philippe Silva thanks
@manumaster1990
@manumaster1990 5 лет назад
:)
@jermainedawson7862
@jermainedawson7862 2 года назад
The reason why I write that , is because there is a little error
@lynnwilliams5432
@lynnwilliams5432 4 года назад
Take tax off
@glennrobinson7193
@glennrobinson7193 4 года назад
This lecturer doesn't look like he gets much sunlight. Pale looking skin.
@ujwiersma8482
@ujwiersma8482 4 года назад
That thought occurred to me, too. There is something to be said for walking your talk and being a good role model. Do as I say, not ....
@cathybrown4102
@cathybrown4102 3 года назад
He can get his sunshine but doesn’t let himself burn. Remember getting 15 mins at the right time of day can give your body 20,000 iu that your body will store for days so there is no need to go out every day
@robertmanning9857
@robertmanning9857 3 года назад
WWG1WGA
@spencerkimllido7327
@spencerkimllido7327 6 лет назад
Skin Cancer
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Vitamin D Measurement the Key to Change
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