Scientists have built a strong body of evidence that shows that fruits and vegetables promote general good health and may protect against heart disease and several types of cancer. Besides being low in calories and fat, fruits and vegetables contain many essential vitamins and minerals. They also contain substances referred to as phytochemicals, which are usually related to plant pigments. Yellow, orange, red, green, and purple colored fruits and vegetables generally contain the most phytochemicals. More than 900 different phytochemicals have been found in plant foods, and more will likely be discovered.
Phytochemicals work in concert with other nutrients to protect against disease.
Supplements and pills contain large doses of only one or two phytochemicals and have not proven effective, Upson explained. Growing produce for market is an excellent way to generate additional income. However, don't underestimate the myriad other benefits gardening can provide.