Our bodies aren't adapted to absorb big loads of nutrients all at once (many supplements surpass RDA values by 200 percent or more), but tiny quantities of them in combinations--exactly as they occur in plants. Eating a wide variety of different plant chemicals is a very good idea, according to research from the American Society for Nutritional Sciences. You don't have to be a chemist, but color vision helps. By eating plant foods in all different colors you'll get carotenoids to protect body tissues from cancer (yellow, orange, and red veggies); phytosterols to block cholesterol absorption and inhibit tumor growth (green and yellow plants and seeds); and phenols for age-defying antioxidants (blue and purple fruits). [from an entry by Barbara Kingsolver's daughter Camille]