I will add a point if enec-data. I live in Seattle, and have sun avoidance tendencies. I take 2000iu if D3 daily in pill form. I find that my depressive type mo

I will add a point if enec-data. I live in Seattle, and have sun avoidance tendencies. I take 2000iu if D3 daily in pill form. I find that my depressive type moods tend to be highly correlated to when I've forgotten to take my D3 for days or weeks at a time. Usually its because I've run out and forget to pick some up. I don't notice for a while, then a week or two later I realize I've been sinking into a funky mood and make a priority to pick more up. Usually I perk back up after a day ir two. The caveat being it's hard to tell if I'm already coming out of a funk and that's why I can run errands again like going to the store, or if just doing things 'to take care of myself' are triggering the upswing. But I still try not to run out of D3 especially in the winter. Also know that you can overdose on vitamin D, so it's best to take in the morning rather than night. The body naturally stops production as you reach certain levels so you're not likely to get too much, even if you spend all day in the sun.