[Pharmboy]

You are most welcome. I attempted to get you quality info as I thought you were concerned about storage and toxicity, but I now see your question more clearly...and it is an excellent one.

I do not think that data exist which can answer your question, but i will ask Holick via email.

And you and I have two mutual interests: American history and nutrition...not bad.

[djf]

This site says the half life of D3 is about 3 wks. I had heard 30 days, but the numbers seem to be all over the place.

http://www.naturalnews.com/026870_Vitamin_D_vitamin_D3_health.html

[decimon]

Thanks again.

Some of the claims of the benefits of vitamin D have made intuitive sense to me. Increased illness during the months of the shortest days, for instance. But knowing better how long is the potential storage of vitamin D would help complete my understanding of the seasonality of the thing. Or maybe just make me feel smarter for supplementing. Can’t underestimate that psychic boost. ;-)