I fell upon this thread accidentally and have some questions. I have psoriasis. Does Vit D3 help? I find that getting some sun helps, but I only get clearing where the psoriasis is exposed. That leads me to believe that it's the UVB that is clearing it and not the Vit D produced by the sunlight. I took Vit D3 for a while but stopped when I didn't notice a difference. After reading this thread I have started taking it again. I live in PA where we don't get a lot of sun, and have long periods of cold when I'm not outside much, so I am probably deficient. Also, does a tanning bed provide Vit D, even though it is artificial sunlight? I do do a tanning bed from time to time.

I don't want to test at this point. Also, I have a few serious medical problems so don't want to take too much Vit D3.

Thanks for any info you can provide.