Some two-thirds of Americans don’t get enough bone-strengthening vitamin D. That’s especially true during the cold and dark winter months when people are deprived of the vitamin D provided by the sun’s warming rays.
Vitamin D deficiency can lead to osteomalacia, a rare bone disorder that causes bone pain and muscle weakness. But taking too much vitamin D can also be a major problem, resulting in similar symptoms, and sometimes a rare and toxic blood condition.
