How do key nutrients found in fruits and vegetables help prevent certain cancers?
Carotenoids (lycopene, lutein, beta-carotene, alpha-carotene) may inhibit the initiation and promotion of carcinogenesis in the body. Carotenoids are powerful antioxidants and can prevent the formation of free radicals. Free radicals are the by product of cellular metabolism or environmental stressors, such as smoking, and may cause cellular damage if present in high concentrations. Carotenoid-rich fruits and vegetables are considered to be protective against certain cancers. Beta-carotene is a precursor to Vitamin A also. Rich food sources include dark-green vegetables and brightly colored (red, yellow, orange) fruits and vegetables. Vitamin C blocks the formation of carcinogenic nitrosamines in the digestive tract. Vitamin C also acts as an antioxidant by preventing the oxidation of certain chemicals to active carcinogens. Rich food sources of Vitamin C include citrus fruits, strawberries, and dark-green vegetables like broccoli and spinach. Dietary Fiber is the non-digestible or par
