Free radicals are groups of atoms that cause danger
to cells. When the body is unable to fight off free radicals, cells are damaged
and premature aging along with various diseases may result. Antioxidants are
natural compounds which protect and heal the cells of the body by fighting
these free radicals and playing a significant role in the prevention of
disease, according to Phyllis Balch in her book, "Prescription for
Nutritional Healing".
Vitamin A and the Carotenoids
Vitamin A carotenoids are found naturally
in fruits and vegetables which are yellow, red, green and orange. This
antioxidant family includes alpha-carotene, beta-carotene, lycopene, lutein and
zeaxanthin. Working as anti-cancer agents, carotenoids decrease the risk of
cataracts and age-related macular degeneration as well as helping to inhibit
heart disease, according to Balch. The body converts carotenoid energy into
vitamin A, reduces the oxidation of DNA and prevents the oxidation of
cholesterol.
Vitamin
C
Vitamin C works in conjunction with
vitamin E to maintain its potency. Due to its water solubility, vitamin C works
in bodily fluids as an effective free-radical scavenger. According to the book
"Prescription for Nutritional Healing" the cells of the brain and
spinal cord can be protected by significant amounts of vitamin C. This powerful
antioxidant also guards against atherosclerosis by preventing free radical
damage to the artery walls.
Useful for preventing the oxidation of
fats, vitamin E prevents the cell's protective coatings from becoming rancid
due to the oxidation of free radicals. Vitamin E is fat-soluble. It enhances
the immune response, helps prevent cataracts and decreases the risk for
coronary artery disease, according to Balch. In order for the body to maintain
adequate levels of vitamin E, the antioxidant zinc must also be present.
An essential trace mineral, selenium
works with vitamin E to protect cell membranes and tissues. Selenium works by
targeting natural hydrogen peroxide in the body and converting it into water.
Found naturally in asparagus, garlic and grains, selenium helps guard the
heart, liver and lungs against free radical damage.
Though coenzyme Q10 is not technically a
vitamin, it is produced naturally in the body and levels often decrease with
age. Found in highest concentrations in the heart and liver, coenzyme Q10 plays
a crucial role in the generation of proper cellular energy. Working in the
mitochondria of the cell, coenzyme Q10 helps to metabolize carbohydrates and
fats and has a natural anti-aging effect. Supplementing the diet with coenzyme
Q10 may be especially beneficial for heart patients as it is known to increase
circulation and stimulate the immune system, according to Balch.
Working as a "recycler" of vitamins C and
E, alpha-lipoic acid restores the antioxidant properties of vitamins after they
have neutralized free-radicals in the body. Stimulating the absorption of other
vitamins, alpha-lipoic acid is especially beneficial for detoxifying the liver
of metal pollutants and lowering blood cholesterol levels, according to Balch's
"Prescription for Nutritional Healing".