Wanted to add info on what has improved here with D3 supplementation-
Husband's general mood has improved, and he's no longer allergic to raw tomatoes (used to flush red and get itchy after eating them), he uses 35-70 mcg a day (1400-2800 iu) depending upon season
I don't have seasonal allergies any more, and my energy levels and mood have improved too (started with 5,000 iu a day, now also 1000-2000 iu/day)