Vitamin A
STRENGTH: 10,000 IU
FORM: 100 Softgels
Benefits
- It is necessary for new cell growth.
- It helps fight infection.
- It promotes growth and repairs of body tissues, bone formation and healthy skin, hair and mucus membranes.
- It helps in the maintenance of good eyesight and is essential for night vision.
- It helps during pregnancy and breastfeeding.
- It helps maintain strong bones and teeth.
- It helps to keep the lungs healthy.
- It ensures proper kidney function.
- It is used to treat acne, eczema and gastric ulcers.
- It helps prevent the development of cancer.
- It is used to treat psoriasis.
Vitamin A is an essential anti-oxidant
nutrient that plays an
important role in the healthy function of many bodily systems.
It is a fat soluble vitamin known by several names, the most
popular being Retinol. It is usually found in supplements as
Retinyl Palmitate.
Vitamin A is manufactured by extraction from fish-liver oil for
supplements, but is ordinarily found in foods such as butter,
cheese, cream, eggs, lamb, liver and milk. Vitamin A is also
formed from provitamin-A (beta carotene) found in carrots,
broccoli, spinach and other vegetables. Vitamin A is necessary
for the growth and repair of every tissue in our bodies, and is
even more important in maintaining the health of your eyes and
skin. It helps fight infections in general and is essential for
maintaining a healthy mucous membrane lining in the stomach,
intestines and sinuses.
Many people in the U.S. are deficient (sub-clinical) in this
nutrient but are not even aware of it. Depleted stores in the
body are usually prevalent in those who eat highly processed
foods on a regular basis and use oil that is also nutrient
depleted. Since most fat soluble vitamins come from food and if
these foods are nutrient depleted, then over time symptoms of
depletion will begin to arise. Signs of deficiency may include:
insomnia, depression, night blindness, increased susceptibility
to infections, fatigue, loss of smell and appetite, rough, dry,
scaly skin, dull lusterless hair; brittle nails and inflamed
membranes in the eyes, infections of the lungs and air passages.
Vitamin A can be destroyed by oxidation particularly in the
presence of iron and copper, and by exposure to high
temperatures and light. So unless you take great care in making
sure you buy foods that are very fresh and have not been highly
processed, you might want to consider buying a Vitamin A
supplement. Over the long haul it is better to be safe than
sorry.
REFERENCES:
- Ross AC. Vitamin A and retinoids. In: Shils M, ed. Nutrition
in Health and Disease. 9th ed. Baltimore: Williams & Wilkins;
1999:305-327.
- Semba RD. The role of vitamin A and related retinoids in
immune function. Nutr Rev. 1998; 56(1 Pt 2):S38-48.
- McCullough, F. et al. The effect of vitamin A on epithelial
integrity. Proceedings of the Nutrition Society. 1999; volume
58: pages 289-293.
- Lynch SR. Interaction of iron with other nutrients. Nutr Rev.
1997; 55(4):102-110.
- Omenn GS, Goodman GE, Thornquist MD, et al. Effects of a
combination of beta carotene and vitamin A on lung cancer and
cardiovascular disease. N Engl J Med. 1996; 334(18):1150-1155.
- Comstock GW, Helzlsouer KJ. Preventive nutrition and lung
cancer. In: Bendich A, Decklebaum RJ, eds. Preventive Nutrition:
The Comprehensive Guide for Health Professionals. 2nd ed.
Totowa: Humana Press Inc; 2001:97-129.