But if you give people vitamin D supplements, you don't change that high rate of heart disease.

and don't take vitamin supplements because they might hurt you!

This is separate from vitamin D.

But this is a separate mechanism from vitamin D.

So we used ultraviolet A, which doesn't make vitamin D.

Now, what we were careful to do was, vitamin D is made by ultraviolet B rays and we wanted to separate our story from the vitamin D story.

Blood tests show low electrolyte levels, low calcium and low vitamin D.

And we need vitamin D. It's now a requirement that children have a certain amount.

And the other thing I should mention was there was no change in vitamin D.

So vitamin D is good for you it stops rickets, it prevents calcium metabolism, important stuff.

We are lucky, in the last hundred years we went from not having any vitamin supplements to having them over the counter and readily available.

There seems to be a lot of data suggesting that vitamin D is very good for you.

So what I'm going to suggest is that vitamin D is not the only story in town.

They also run the risk of vitamin D deficiency, if they have desk jobs, like that guy.

But it's all UVA, and, significantly, that UVA has no ability to make vitamin D in your skin.

It's very destructive, but it also catalyzes the production of vitamin D in the skin, vitamin D being a molecule that we very much need for our strong bones, the health of our immune system, and myriad other important functions in our bodies.

And vitamin D has had a great deal of press, and a lot of people get concerned about it.

But an association The higher people's blood levels of vitamin D are, the less heart disease they have, the less cancer.

Get it? Vitamin C?

IF YOU HAVE ANY HERBAL SUPPLEMENTS OR REMEDlES,

D D D D D D Did you take out Spudgy?

Phil, Vitamin P., P. Daddy.

So people inhabiting northern hemispheric environments were bereft of the potential to make vitamin D in their skin for most of the year.

Red hair is an advantage in the northern climates, because the fair skin allowed ancestors to absorb more light and synthesize more vitamin D.

D d die??!?

When it comes to supplements, should you be taking them?

It's one of the highest Vitamin C content foods in the world but all processed chocolate has no Vitamin C in it because heat destroys Vitamin C.

Part d, or coordinate d, or point d.

High vitamin D levels, I think, are a marker for sunlight exposure, and sunlight exposure, in methods I'm going to show, is good for heart disease.

This is a visualization of all the evidence for nutritional supplements.

So I'm going to need something in the way of supplements.

And then d squared, that is d times d.

He gives half of them vitamin C.

He gives half of them vitamin B12.

I can, like, taste the vitamin C.