Our bodies work hard to fight off infections and diseases. Normal body functions such as breathing and physical activity produce free radicals that attack healthy cells. If the cells are weakened, they become more susceptible to cancers and cardiovascular disease. Antioxidants help protect healthy cells from damage caused by free radicals.
Carotenoids
There are roughly more than 600 carotenoids found in foods. Beta-carotene, lycopene, and lutein are the most common to help fight damage from free radicals. If a food is high in carotenoids, it may help fight off cancer and even decrease the risk of macular degeneration.
Foods high in carotenoids include red, orange, deep yellow, and dark green leafy vegetables such as sweet potatoes, spinach, and carrots.
Vitamin E
The main role of vitamin E is that it is an antioxidant. It helps prevent cancer, heart disease, and cataracts, according to research. It works hand in hand with other vitamins such as vitamin C to give protection against other diseases. Vitamin E can be found in vegetable oils, wheat germ, whole grains, and peanut butter.
Vitamin C
The most widely known antioxidants. It helps prevent infections in your body as well as cell damage, it helps produce collagen and aids with iron absorption. Vitamin C can be found in strawberries, broccoli, potatoes, and citrus fruits such as oranges and grapefruits.
Challenges to Healthful Eating
Most adults should be eating 1 ½ cups of fruit and 2 ½ cups of vegetables on a daily basis. Fresh, frozen, canned, and dried fruits are all acceptable; try avoiding frozen and canned fruits that have added sugars and salts.
Many authorities recommend getting antioxidants from food sources rather than from supplements, as some antioxidant supplements have actually been shown to increase the risk of cancer.
Source: https://www.eatright.org/health/essential-nutrients/vitamins/antioxidants-protecting-healthy-cells
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