Get daily vitamin D from sunlight, fortified foods, a supplement, or a combination of all three:
- Sunlight. Expose the face and forearms to warm sunlight (from 10:00 a.m. to 2:00 p.m.) without sunscreen for at least fifteen minutes for light-skinned people, twenty minutes for dark-skinned people, or thirty minutes for people over the age of seventy.
- Fortified foods or supplements. The minimum recommended intake for vitamin D is 15 mcg (600 IUs) up to age seventy and 20 mcg (800 IUs) over age seventy. For people with diabetes, especially if they’re overweight, a vitamin D supplement of 25–50 mcg (1,000–2,000) per day is advised.