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ANTIOXIDANT OVERVIEW
Vitamin A and its precursor, beta-carotene, are powerful free radical scavengers. Vitamin A also is necessary for healthy skin and mucous membranes, the body's first line of defense against invading microorganisms and toxins, and promotes the immune response. Beta-carotene and vitamin A destroy carcinogens (cancer-causing substances), guard against heart disease and stroke, and lower cholesterol levels.
THE CAROTENE & VITAMIN A CONNECTION
A class of phytochemicals, carotenoids are fat-soluble pigments found in yellow, red, green and orange vegetables and fruits. They are a potent family of antioxidants that include alpha-carotene, beta-carotene, lycopene, lutein, and zeaxanthin. Of the more than 500 carotenoids found in nature, about 50 can be converted into vitamin A in the body.
Carotenoids quench singlet oxygen, which is not, chemically speaking, a free radical, but is nevertheless highly reactive and can damage body molecules. Carotenoids also act as anticancer agents, decrease the risk of cataracts and age-related macular degeneration, and inhibit heart disease.
Studies have shown that carotenoids found in tomato juice (lycopene), carrots (alpha- & beta-carotene), and spinach (lutein) may help to protect against cancer by reducing oxidative and other damage to DNA. Together, the antioxidants alpha-lipoic acid, coenzyme Q-10, vitamin C, and vitamin E help conserve carotenoids in tissues.
The body converts beta-carotene into vitamin A as needed. Any left-over beta-carotene than acts as an antioxidant, breaking free radical chain reactions and preventing the oxidation of cholesterol. It reduces the oxidation of DNA and disables reactive oxygen species molecules generated by exposure to sunlight and air pollution, preventing damage to eyes, lungs, and skin.
A recent laboratory study found that taking very high doses of supplemental beta-carotene alone (50,000 IU or more daily) may interfere with the normal control of cell division. It is best to take a carotenoid complex containing a variety of carotenoids.
Natural sources of vitamin A include liver, whole milk, whole eggs, cheddar cheese, and beta-carotene foods. Natural sources of the carotenoids in general include sweet potatoes, carrots, spinach, corn, sweet peppers, spirulina, and kale.
MoonDragon's Nutrition Basics: Vitamins - Vitamins Index
VITAMIN A & CAROTENOID ACID PRODUCTS
Vitamin A, 100% Natural, Nature's Way, 10,000 IU, 100 Softgels
Nature's Way Vitamin A is an important nutrient in maintaining cell membrane integrity. It also plays an important role in proper bone formation, reproduction and vision.
Alive! Whole Food Energizer, Multi-Vitamin & Mineral With Naturally Occurring Iron (No Iron Added), Nature's Way, 90 Tabs
No other supplement contains more life-giving nutrients than Nature's Way Alive Multi-Vitamin. Alive Multi-Vitamin is better absorbed into your blood stream because its tablets disintegrate up to 5X faster than other leading brands.
Ola-Loa Child Multi-Vitamin Drink Mix, Cran-Raspberry, 30 Packets
Better your kids health by introducing them to this Child Multi-Vitamin based upon the most up-to-date studies on nutrition and child development and is 100% all-natural.
Dry Vitamin A & D, Nature's Way, 15,000 / 400 IU, 100 Caps
Vitamin A & D are both involved in the cycles of mineral and hormone balance which help to maintain normal bone formation and density. In addition, Vitamin A is an important nutrient in maintaining cell membrane integrity, and normal vision and reproduction.
Daily Two Iron Free Multi-Vitamin Supplement, 100% Natural, Nature's Way, 100 Tabs
This iron-free multivitamin supplement was developed for the protection, growth and maintenance of body systems as they age.
Multi-Vitamin With Iron, Nature's Way, 100 Caps
This multivitamin with iron contains vitamins and minerals important for proper body function in quality forms and safe doses.
Once daily Multi-Vitamin With Iron, All Natural, Lactose Free, Nature's Way, 100 Tabs
Nature's Way Daily Multi-Vitamin with Iron provides many of the essential nutrients that modern diets may lack. They are useful for protection, growth and maintenance of body systems as they age.
Antioxidant Formula Supplement, All Natural, Nature's Way, 100 Tabs
Nature's way Antioxidant Formula Supplement is 100% natural.
Multi-Vitamin Without Iron, Nature's Way, 100 Caps
The vitamins and minerals in this Multi Vitamin without Iron play many important roles in the body: antioxidants to protect fats, cells and DNA, coenzyme precursors for energy production and metabolism, and cofactors for hormones and enzymes which regulate body processes.
Beta Carotene (Dry Natural 100% Dunaliella Salina), Nature's Way, 25,000 IU, 100 Caps
Beta Carotene from Nature's Way is a potent and popular antioxidant found in plants and vegetables. Antioxidants help combat free radicals and molecules which damage cells and DNA.
Beta Carotene, (100% Natural Dunaliella Salina), Nature's way, 25,000 IU, 100 Softgels
Nature's Way beta carotene is 100% all natural from Dunaliella salina.
Sure Sight Liquid Formula, Eye Supplement, Dairy Free & Kosher, Dynamic Health, 8 fl. oz.
Sure Sight Liquid Eye Supplement helps maintain vision and eye health.
Energy Drink, Ola Loa Vitamin Energy Supplement Powder Drink Mix, Orange Repair, 30 Packets
Ola Loa is the most extensive vitamin and mineral supplement available in a great tasting effervescent energy drink.
Mango Juice, 100% Pure Organic, Kosher, Dynamic Health, 16 fl. oz.
Mango Juice is traditionally used for body odors and as a body cleanser. It is a good source of Potassium, Vitamin A, Vitamin C & Pantothenic Acid.
Chlorella Green Algae, Nature's Way, 410 mg, 100 Caps
Green Algae Chlorella is helpful as a support for long-term debilitating systemic conditions which lower energy and resistance; such as diabetes, arthritis, high blood pressure, allergies, and infections.
Multi-Carotene Antioxidant, Carotene Supplement, Nature's Way, 60 Softgels
Protectamins Multi-Carotene Antioxidant Carotene Supplement contains several antioxidants from the Carotene family, and the highest level of Alpha Carotene available, naturally extracted from red palm fruit.
FOR MORE PRODUCTS & INFORMATION CLICK ON THESE LINKS:
HerbalRemedies: Vitamin A / Carotenoids / Retinol / Retinoic Acid / Retinal Supplements & Products
HerbalRemedies: Vitamin A / Carotenoids / Retinol / Retinoic Acid / Retinal Information
HerbalRemedies: Beta Carotene Information
HELPFUL RELATED LINKS
Antioxidants, Nature & Chemistry: Beta Carotene
Vitamin A & Carotenoids: Antioxidants for Sight
Beta Carotene: Vitamin A Beta-carotene, Lycopene, Carotenoids
Healthy Alternatives Newsletter: Beyond Carrots & Beta Carotene: Carotenoids
The Cancer Project: Food As Medicine: Carotenoids
Vitamin A/Beta-Carotene: Role in Cancer Prevention & Treatment
Antioxidants - What we know, What we need to know
Amazon.com Books: Challenge Cancer & Win! Step-By-Step Nutrition Action Plans for Your Specific Cancer
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Amazon.com Books: PDR for Nutritional Supplements
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Amazon.com Books: Prescription for Nutritional Healing: A Practical A-Z Reference to Drug-Free Remedies Using Vitamins, Minerals, Herbs, & Food Supplements
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HELPFUL PRODUCTS & FURTHER EDUCATION
Prescription for Nutritional Healing: The A-To-Z Guide To Supplements
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Prescription for Nutritional Healing: The A-To-Z Guide To Supplements
-- by Phyllis A. Balch, James F. Balch - 4th Edition
Prescription for Herbal Healing: The A-To-Z Reference To Common Disorders
-- by Phyllis A. Balch
The Complete Guide to Natural Healing
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