Phytochemicals are health promoting chemical compounds produced by plants. Phytochemicals may help the body destroy and eliminate toxins from the environment or tissue-damaging by-products of metabolism such as oxygen free radicals. 

Cruciferous vegetables such as broccoli, kale, cauliflower, brussel sprouts, cabbage and mustard greens are rich in cancer-preventing phytochemicals sulforaphane and isothiocyanates. 

Tomatoes, pink grapefruit, papaya, peaches and watermelon contains the phytochemical lycopene. Lycopene protects against oxidative damage and reduces the risk of cancer and heart disease. 

Dark leafy greens and brightly colored vegetables contain the phytochemical lutein. Lutein reduces the risk of heart disease and the eye disease of age-related macular degeneration. 

Green and black tea, onions, apples, and grapes contain the phytochemical flavonoid which protect against cancer and heart disease. 

Date, figs and other dried fruits contain the phytochemical polyphenols which are powerful antioxidants.