Welcome to the unique VitaminDelta.org expert-system with free advice about vitamin D.

What are you looking for?

With one answer only you will see how this system works. Make your choice !

I'd like to know, whether my complaints are signs of a deficiency.
I'd like to know, how much sunshine is good for my skin type.
I'd like to know, whether my vitamin D level is too low.
I'd like to know, whether I got enough sunshine.
I'd like to know, whether my vitamin D level is at risk.
I'd like to know, how I can get to a normal level of vitamin D.
I'd like to know, how much Vitamin D I need for normalization.