Almost one in every three Americans takes a multivitamin. But why? In many cases, nutrients from multivitamins are covered by a healthy daily diet. For some, vitamins and supplements are beneficial. But how do you know if you really need vitamin B, C or D? Or if fish oil or turmeric are right for you? Naturopathic doctor with UH Connor Whole Health, Dr. Jacob Wolf has the answers and helps you do your homework before buying a bottle of pills.