Antioxidants react with free radicals & throw the free radicals out from the human beings body. Free radicals generally injure cells so antioxidants throw out the free radicals & prevent cell injury. Free radicals are generally formed environmental pollutants like smoke & radiation. Free radicals are also be formed by diet which we daily take. Free radicals generally injure cells, this leads to cancer & heart diseases. Antioxidants comprise of vitamin C, vitamin A, selenium, vitamin E, lycopene, beta-carotene and lutein.
Vitamin A can be defined as fat soluble vitamin. It acts as an antioxidant it & prevents cell injury which occurs because of free radicals. National Institutes of Health revealed that individuals who consumed vitamin A in excess amounts would have the less chances of cancer occurring. Vitamin A is generally available in fortified milk, egg substitute, and cheese & liver.
Vitamin C can be defined as water soluble. Vitamin C acts as an antioxidant. Vitamin C prevents oxidation of carbohydrates, proteins, RNA, lipids & DNA which occurs because of free radicals. It enhances immune power by defending phagocytes, lymphocytes and neutrophils from oxidative injury. It also defends different antioxidants from oxidation. Vitamin C is available abundantly in strawberries, citrus fruits, peppers, tomatoes& potatoes.
Vitamin E can be defined as vitamin of fat soluble. Vitamin E acts as an antioxidant. Vitamin E prevents oxidation of fats. Vitamin E stops the LDL cholesterol oxidation and prevents cell injuries & heart diseases. Vitamin E is available abundantly in peanut butter, wheat germ, sunflower seeds, almonds & safflower oil.
Beta-carotene belongs to the family of carotenoid. Beta-carotene is generally available in plant related diets. When people eat beta-carotene it will be transformed vitamin A. Beta-carotene is available richly in spinach, carrots, sweet potatoes, kale, cantaloupe & apricots.
Lycopene belongs to the family of carotenoid. Lycopene acts as an antioxidant. Individuals who take excess quantity of lycopene have less risk of occurring macular degeneration, cancer & cardiovascular diseases. Lycopene activity is different in different individuals. Lycopene is available richly in tomatoes.
Lutein also belongs to the family of carotenoid. Lutein prevents cells from injury which occurs generally because of free radicals. Lutein acts like anti-aging & anti-cancer agent. Lutein prevents eyes from injury of UV oxidation. People who consume excess amounts of lutein have less attack of macular degeneration and cataracts. Lutein is available richly in Brussels sprouts, kale, romaine lettuce, spinach, turnip greens, peas & broccoli.
If individuals take selenium, in human being’s body selenium will be transferred into selenoprotein which is antioxidant enzyme. Selenium reduces the risk of cancer. It reacts with free radical & prevents cells from injury & growth of tumors. Selenium prevents oxidation of LDL & reduces heart diseases. Selenium abundantly available in oatmeal, Brazil nuts, tuna, cheese, beef, poultry, eggs and cottage.