0 any of a group of vitamins, found in foods such as liver, some fish, and egg yolk, that are important for healthy bones and teeth
Although sun is a natural source of vitamin D, scientists think that 15–20 minutes of sun on our skin every day is enough to get healthy amounts of this essential vitamin.
One doctor said that 80 percent of her patients do not get enough vitamin D. This is called vitamin D deficiency.
People with vitamin D deficiency need to eat foods with vitamin D or take vitamin D pills.
