My gynecologist had me do a blood test for Vit D levels last year.
I wear plenty of sunscreen usually because I'm very fair skinned.
YAY!- turns out I have excellent blood levels of vit D...must be because I've always taken vitamin supplements and little Norwegian fish liver oil capsules for years.
This is a relief to me also because my grandmother had severe osteoporosis and I fall in the high risk group. I hope to avoid the worst of that with diet and exercise.