Vitamin E

Vitamin D is essential to the human body, and the main source is sunlight rather than foods.

Deficiency
Vitamin D deficiency can cause complex medical problems, and because vitamin D cannot be absorbed from sunlight shining through windows, people who are mostly or totally housebound are particularly at risk of Vitamin D deficiency.

Learn more

 * Linus Pauling Institute Micronutrient Information Center - Vitamin E