Which vitamin is commonly deficient in the American diet?

50 percent of Americans are deficient in vitamin A, vitamin C, and magnesium. More 50 percent of the general population is vitamin D deficient, regardless of age. 90 percent of Americans of color are vitamin D deficient. Approximately 70 percent of elderly Americans are vitamin D deficient

Explanation:

I agree. 50 percent of Americans are deficient in vitamin A, vitamin C, and magnesium. More 50 percent of the general population is vitamin D deficient, regardless of age. 90 percent of Americans of color are vitamin D deficient. Approximately 70 percent of elderly Americans are vitamin D deficient.