Virtually every study on the subject shows that the people who eat the most fruits, vegetables, whole grains and beans suffer the lowest rate of cancers and heart attacks.
Plants contain hundreds of thousands of phytochemicals that prevent diseases in humans.
The vast majority have not been discovered. Medical researchers isolate chemicals from plants and then test them to see if they prevent disease. This month a study from Korea shows that people who have the highest intake of ginseng have the least cancer. These studies should not encourage you to go out and stuff yourself with ginseng, carrot and orange juice and olive oil or to buy pills that entrepreneurs claim contain extracts of these foods. The latest research should encourage you to eat the fruits, vegetables, whole grains and beans that you can buy at your grocery.