FW: Re: Vitamin D yet again

[Guest guest]

Sunlight by Zane Kine, MD is the book on sunlight and Vit D. I was trying to

recall.

JR

-----Original Message-----

From: [mailto:crjohnr@...]

Sent: Tuesday, April 05, 2005 2:45 PM

Subject: RE: [ ] Re: Vitamin D yet again

AFAIK there is a significant difference between ingesting Vitamin D supplements

and sunlight exposure.

There have also been some questions about early tests related to formulations.

Most fat soluble Vitamins like D have upper limits for safe dosing, AFAIK

precursors for such are not

the same since the body apparently regulates production of the final vitamins

when you have what you need.

Similar to beta carotene being healthy in massive doses but Vitamin A having

upper safety limits.

I suspect sun exposure is similar to eating a precursor for Vit D. That said

there are the obvious

exposure limits due to skin damage.

There is an excellent book on the subject but the title/author escapes me. It

may be Stoll but I can't swear to that.

JR