Take a look at the astounding array of colors when you visit a farmers market or the produce department in your neighborhood grocery store. The beautiful hues contained in all of those gorgeous fruits and veggies are the nutrients of life. When you hear your doctor suggest that you "Eat the rainbow", that means that you should create a colorful, multi-hued plate for yourself at every meal. By doing so, you are ensuring that you are consuming a variety of healthy, nutrient-filled foods. You might like to take a look at this pamphlet by The American Heart Association about "Eating the Rainbow".