Supplements have become a staple in the diets of many Americans as awareness of skyrocketing nutritional deficiencies grows.
In an analysis from 2001–08, it was determined that about 90 percent of Americans are deficient in vitamins D and E, and more than 40 percent have some other form of nutritional deficiency. Depending on the study, 35 percent to 80 percent of Americans now take supplements. The data are more uniform in the higher age brackets, with about 80 percent of adults older than the age of 60 using supplements.
