The term “phytochemicals” refers to a wide variety of compounds produced by plants. They are found in fruits, vegetables, beans, grains, and other plants. Scientists have identified thousands of phytochemicals, although only a small fraction have been studied closely. Some of the more commonly known phytochemicals include beta carotene, ascorbic acid (vitamin C), folic acid, and vitamin E.
Some phytochemicals have either antioxidant or hormone-like actions. There is some evidence that a diet rich in fruits, vegetables, and whole grains reduces the risk of certain types of cancer and other diseases, and researchers are looking for specific compounds in these foods that may account for the beneficial effects in humans. Available scientific evidence does not support claims that taking phytochemical supplements is as helpful as consuming the fruits, vegetables, beans, and grains from which they are taken. To learn more about the significance of phytochemicals, you may watch the segment for Show #40, “Your Food and Phytochemicals with Dr. Isabela Konczak”.