Posted 10/25/2011 4:05 PM (GMT 0)
I was vit D deficient about two years ago -- started taking 2,000 IU a day, and my last few tests have been within normal range (including when I was still very sick).
I try to go outside w/out sunscreen too, but the reality is that if you live in a Northern climate you can't get enough from the sun for about half the year.
Also having IBD, using prednisone, lactose intolerance and other health issues people on this list are likely to have make it harder to process vitamin D, so the sun time doesn't necessarily work as well as it would for a healthy person (same for the supplements)