The human body depends on hundreds of different food compounds to keep its immune system strong. These phytochemicals protect us from cancer & heart disease, as well as from other diseases. Why the Tri-Color Diet? Because the most important preventive phytochemicals give foods their distinctive colors -- such as red, yellow/orange, & green. Katahn shows us how to recognize the essential phytochemicals & understand how they work together. He gives us over 100 delicious recipes to ensure that eating rightÓ tastes just as good as eating wrongÓ. He shows how diet can be combined with exercise to increase energy & reduce stress.