Nutritionists think they've got it all figured out. They tell you to take this vitamin & that vitamin, & they tell you to make sure you take your antioxidants to sop up free radicals (usually without knowing what free radicals really are). How do they know what you should take? How do they know how much you should takesimple! They feed various nutrients to cultured cells & see if they continue to multiply, or they conduct studies with animals or small numbers of humans. The trouble is, you & I are more than just cells in a dish. Biological systems are incredibly complex & figuring out which particular blends of vitamins, minerals, & antioxidants would require controlled studies on hundreds if not thousands of humans (not lab animals) who were kept locked up for years & ate only what was fed to them.