Will You Live Longer if You Take Vitamin D Supplements?

Will You Live Longer if You Take Vitamin D Supplements?

“Will You Live Longer if You
Take Vitamin D Supplements?” In 1822, a Polish physician
was the first to publish that sunlight could cure the vitamin D
deficiency disease: rickets. His work was ignored by mainstream
medicine for a century, not coming into widespread use until
the 20th century, when wire cages were affixed to tenement buildings so
babies could benefit from the sun. Are we in a similar situation now, where the medical profession has
just not caught up with the science? Researchers have
documented correlations between all sorts of good things
to higher vitamin D levels, even to the point of seeing whether
vitamin D supplementation might reduce the adverse
effects of earthquakes. Seems to help with everything
else, so why not? It’s actually not as
silly as it sounds. Traumatic events like natural disasters can
have a significant psychological impact, which may be affected
by vitamin D status. But when researchers put
supplements to the test, the purported links
often didn’t pan out. This lack of effect may exist in part
because low vitamin D levels may just be a marker for things like
aging, obesity, smoking, and inactivity. Or maybe low vitamin D didn’t lead
to disease, but maybe disease led to low vitamin D — inflammation
can drop D levels within the body. So just because low D levels and
disease seem to be correlated doesn’t mean that vitamin D
deficiency is the cause. While the majority of observational
studies may show a link, where you just measure D levels and
disease rates, in only a handful of conditions have interventional
studies proven vitamin D to be effective, where you give people D supplements
or placebos and see what happens. But one of those conditions for
which vitamin D supplements appear to genuinely work is
helping to prevent mortality. 56 randomized clinical trials,
involving nearly 100,000 people between the ages of 18
and 107, mostly women, randomized to four years of vitamin D
supplements or sugar pills. Put all the studies together and those given
vitamin D supplements lived longer, also specifically lowering
the risk of dying from cancer. Note this effect appeared limited
to vitamin D3 though, the type derived from
plants and animals, not vitamin D2, the type derived
from yeast and mushrooms. How large an effect was it? It would take 150 people taking vitamin D
supplements for 5 years to save one life, and so if we were talking
about a drug, you’d have to weigh that
against the cost and side effects of dosing
so many people. But when we’re talking about
something as safe and cheap as vitamin D supplements
it seems like a bargain to me. A similar analysis pegged the
benefit at 11% in terms of reduction of total mortality,
which is pretty substantial, potentially offering a life extension
benefit on par with exercise. Though no, it does not seem to reduce
the adverse effects of earthquakes. The only concern that was raised
is that it may give people license to like order an extra doughnut
or something. We still have to eat healthy. Any longevity benefit from vitamin D would
just be a small adjunct to a healthy lifestyle. But for those of us who want
all the help they can get, the question then becomes
OK, how much should we take? The question I’ll address next . . .



  • Mike


  • Vegan Gardener

    reduce the impact of earthquakes ….wtf!

  • CrazyPolishVEGAN

    oh you… you did it again 馃檪 till the next video Dr Greger 馃檪

  • VeganBanana

    conclusoon : being in the sun prologates life.

  • Al Fin

    Another cliffhanger!

  • dallas copp

    One things I would like to point out about supplements is how the person is taking them. Is it in pill form, liquid form or powder form? Pill form is the east effective in actually getting the vitamins into your body

  • zukodude487987

    Give me the D

  • Lichtblick

    YES; finally i can take my vitamin D without a guilty conscience ^^

  • Kickass 101

    Your body can't regulate vitamin d suppliments; toxicity is highly likely. Get vitamin d as nature intended – the Sun

  • I've Explored Exploration

    I'll laugh at this comments of relief in the next video… I always do.

  • GoustiFruit 蠁

    It may save 1 life for every 150 people taking vit. D for 5 years ? Then it's totally useless !
    Imagine the contrary hypothesis -> for every 150 people smoking for 5 years, one may die: do you think people would stop smoking ?

  • Astral Purpose

    Why not buy a vitamin d sunlamp?

  • grk70s

    One must take k2 with D3 & if you dont or if it is imbalanced then you will harden your arteries or weaken your heart. One opinion on the ratio of k2/d3 to be 1/10. Also you have to take magnesium & calcium (1/1) if you are going to take d3/k2. He must adress all these issue or one can do damage.

  • A Cee

    yay I'm from Poland. Born and raised 馃槈 now in CT

  • Britton Evans

    The man left me at a cliff.

  • Q. .Q

    Vegan vitamin D3 is actually quite expensive where I live :(…

  • Eelke Aptroot

    I expose myself to UV light every day for about 5-10 minutes if I don't get any sunlight to get my vitamine D.

  • Eden Sinvani

    讻转讜讘讬讜转 讘注讘专讬转 诇诪讛 讛驻住拽转 讗讬转诐?

  • sheepnoisebah

    just took 2000 IU, this better be a positive video!

  • Katie Bee

    C'mon dr g I want arsenic in rice update u promised

  • Nikolay Nikolov

    Been taking it since i went vegan 2 years ago, and I'm still alive. So yes, I confirm 馃榾
    By the way you already told us how much to take in another video, it is 2000 IU a day (I take less, since the vegan d3 is a lot of money).

  • MoreChannelNoise

    ooh what a naughty boy producing all these cliff hangers!

  • Blue Skies

    Also address what blood level should be shoot for.

  • Angry Baboon

    Your cliffhangers are almost as suspenseful as game of thrones was

  • Qris TV

    to be continued!

  • Steeldude

    is the cheap d3 as good as the expensive one you buy in health stores?

  • Disco Nouvo

    oh my Greger, another cliff hanger!

    What about Vit D injections – I hear that you could have one once a year and D levels will stay tip top.

  • Amun

    So yes.

  • Lloyd Naylor

    The further away from the equater(less uvb) the higher the disease rate

  • Krwiomocz.Bogurodzicy 鈸

    O Dr. Greger, the master of suspense… Hitchcock would be proud…

  • manyasospapa

    2000 iu a day, tha't how much I'm getting

  • silkhead44

    will you live longer eating a vegetarian diet?…no evidence to support this

  • Bloated Tony Danza

    Dr. McDougall does not approve the ingest of V D supplements.
    I get that not everyone can go outside, and had the sun ejaculate all over the body. I don't remember why Dr mcdougall didn't like it. If someone knows, please post it. I'm going to investigate it as well.

  • John Smith

    I guess D3 wins!

  • john sherdahl

    @Dr. Michael Greger , very helpful but more interesting than anything'!, but I have a question for you?, with that new cure out, with the use of raw milk, the NDA or something, for curing Cancer?, what's your take on it Doctor Sir'!!, just something short if you could please'!…

  • Jeff Lebowski

    Another cliffhanger, I'll just pop vitamin D until the next video.

  • Michael Janavel

    Less than you might think, and less than you may have been lead to believe.

  • Greg Balteff

    yes you will …get it through sun and then supplementation ….the whiny doctor could be right on this


    You know I could die while waiting for to tell me the right amount of vitamin d I should take

  • Noah Nobody

    Owww, you left us with another cliffhanger!

  • Erin Tucci

    Dude your killing me with these cliff hangers!!

  • newbeequilter

    Oh, Dr. Gregor and your cliffhangers!

  • _gongster

    Just get some sun, Sunshine!

  • shira T


  • Amy Rene

    I was advised to take 4000IUs per day… I exercise in the sun for one hour 5-6 days a week as well…looking forward to your next video.

  • Miguel Torres

    Dr. Greer, the suspense is killing me!

  • Andrew Clancy

    But Dr. Greger…If several hundred people have to take vitamin D for X years to save one life, how many lives will be lost if each of your hundreds of thousands of viewers (a million?) have to wait ANOTHER 3 DAYS (Fri-Mon) to find out the optimal vitamin D dose?

    Dr. G…stop killing us! 馃槈

  • Suebmama M

    So, I have 2 boys with Crohns Disease. One takes his D regularly and has good D levels though he is less active, obese, and eats poorly. He has aches and pains and gets sick more often and he also takes meds daily for Crohns. My other son is low in vitamin D for years, is extremely active, lean and a vegan and feeling great. Always forgets to take his D supplements. My vegan son was off of his infusions for 5 months hoping to not go back on however upon colonoscopy dr found inflammation and lesions in his stomach and gut and told us to get him back on the infusions. Is it just that he did not have enough time to heal being a vegan for a year?
    Also, there are vegan Vitamin Ds available your video stated the successful studies were with non- vegan D. Which do you recommend?
    Thank you.

  • TheAltruismActivist

    Wait, humans are suppose to be outside in the sun? Except for certain appeal to nature fallacies, doing natural things (like going outside, eating whole foods, sleeping enough, and moving your body) tend to be the healthiest things that we can do!

  • Spartan Elf

    I love how doctor Greger make these cliffhangers that fill us, health junkies, with expectation

  • Ayah Uasca

    Another cliff hanger! You mean I have to stand here holding my vitamin D bottle all day.. Oh man, I can't wait to find out the answer.

  • Howard Johnson

    Maybe Vitamin D is responsible for global warming

  • Dustin Hansford

    Rhonda patrick recommends between 2000 and 4000 it's a day and since I work nights I tend to aim for 4000ius.

  • jane a sinner

    Cheap? Nothing is cheap when you are poor.

  • MaLaNdRaGeM123456

    40.000 UI

  • WisdomTooth

    Yeah Sunlight is the Giver of Life.

  • elite1980s

    Plenty of sun rays should do the job.

  • ura soul

    4000ui is too law afaik. 10000ui is advised by the researchers i respect. sun is best!

  • Live & let live

    tl;dr : YES

  • Chacha5678

    please do a video on the evolutionary benefit(s) of insulin resistance

  • woodrunner

    I'll take one vitamin D for one year

  • tapolna

    So, the answer is yes .. a 1/2 sec video

  • Just Rouie

    Most of supplements won't work, because it will take great science in getting the right active ingredients to put in a pill.. but good to say not all of them, and I know 3 supplement company that puts the best science and tested by 3rd party sources.

  • Battery9876

    You haven't talked specifically about vit D and cancer. Can you address that issue?

  • Potato Strong

    Read the study conclusion. Not definitive at all.

  • me.echy5

    wheres the vitamin d2 studies

  • GreensAndBeansGaming

    I would be careful taking D supplement. I get anxiety and palpitations every time I took it, even in fortified foods like almond milk. As long as I stay away from it I'm great. Google D supplements and anxiety and you see others complain about this too. Dr. McDougall and I think it's poison, get in the sun instead.

  • Sushmita Roy

    Enough plant based docs have said that vitamin D is a supplement that they don鈥檛 have the amount of data yet that they want, to say for sure that it is a supplement to take regularly. I get it from the sun as much as possible. I agree with Dr.Greger that taking vitamins and supplements can give one license to eat whatever they want, thinking that they are protected by pills. I don鈥檛 like the idea of concentrated isolated hormones like 鈥渧itamin鈥 D in my body. Just not convinced yet on vitamin D efficacy. What good is a long life if there are not life to those years?

  • Starchivore88

    SUN, as nature imtended. Pills won't save you folks. Shakes my head

  • Lukas M

    Wow the mortality study is very underwhelming… Well there goes my 3 day vitamin d hype. My peronal conclusion: Going outside is healthy. I am always disappointed when the only scientifically proven things is stuff that my grandmother knew: Eat your fruits and veggies and go outside.

  • jackk spratt

    I was very happy to hear this because I've been taking 2000 iu's of vitamin D3 daily for the last 15 years.

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