A is a fat-soluble
vitamin that occurs in nature either preformed Vitamin A or as provitamin or precursor
Vitamin A. Preformed Vitamin A,
such as retinol and retinal in eggs, is ready to be used by the body
directly from food sources.
The carotenoids and carotenes are
forms of provitamin or precursor Vitamin A.
Carotenes (including beta-carotene) are a group of fat-soluble pigments
found in orange, dark yellow, and dark green vegetables and fruits.
Provitamin A can be converted into Vitamin A once ingested.
Researchers have identified over
600 active carotenoids, of which only 30-50 can be converted into
Vitamin A. Beta- carotene is readily converted into
Vitamin A and has many functions, including some which are
independent of Vitamin
A. Retinol, retinal and retinoic
acid are fat-soluble Vitamin
A derivatives vital to eye
and retina function, that protect the mucous membranes of the mouth, nose,
throat and lungs from damage, and reduce risk of infection and cancer. Low
levels correlate with increased lung, larynx, esophagus, mouth, stomach,
colon, prostate and cervix cancers.
Increased dietary intake of
carotene-containing foods is associated with a lower incidence of certain
lung, digestive tract, and other cancers. A study monitoring 8,000 men over
a five-year period found that those with the lowest intake of beta-
carotene had the greatest risk of getting lung cancer. Another long-term
study of 2,000 men demonstrated that smokers with the lowest intake of
beta-carotene were several times more likely to develop lung cancer than
smokers with the highest intake of beta-carotene.
Vitamin A is a fat-soluble vitamin, it may be toxic at
high levels. Deficiency of Vitamin A and carotenoids, however, are a much greater
concern than taking these nutrients in excess. Extensive medical and
pharmaceutical research have done with Vitamin A and carotene-derived substances, as evidenced
by thousands of articles in numerous scholarly journals, and numerous
diverse health care by products of that research, ranging from acne
medication (Retin A) to anti-cancer
Food sources of
Vitamin A include animal and fish liver, eggs, milk and
butter. While you can overdose on fat-soluble Vitamin A supplements, large doses of water-soluble beta
carotene, found in carrots, broccoli, spinach, cabbage, orange and yellow
fruits, are non-toxic and remain an extremely potent source of exogenous
Individuals deficient in
Vitamin A are more susceptible to infectious diseases and
have higher mortality rates. Vitamin A stores are severely depleted during infection.
Infectious conditions associated with Vitamin A deficiency include the measles, pneumonia, chicken
pox, AIDS, chronic nephritis, and respiratory syncytial
A and its analogues
inhibit cancer in numerous ways. They prevent tumor initiation and
proliferation, attack and destroy cancer cells, and may actually
reverse precancerous lesions. In addition to their anti-cancer
properties, the potent anti-inflammatory and antioxidant properties
A and carotenoids
reduce some of the more toxic effects of radiotherapy and
Pregnant women should not use high
doses of Vitamin
A; instead, use beta-carotene.
A is a fat-soluble vitamin
stored in the body, toxicity is possible. Beta carotene or plant sources
contain precursor Vitamin
A, and cannot convert quickly
enough to cause a toxic condition. A nonharmful temporary skin yellowing
may occur when large amounts of carotene-rich foods, such as carrots or
tomatoes are consumed.
Adults who consume an excess of 50,000 I.U.
A per day for several
years may develop toxicity. Smaller daily doses may result in
toxicity if there are malfunctions in storage and transport of
Vitamin A, which occurs in liver cirrhosis, hepatitis,
inadequate protein consumption, and in children and
Vitamin A toxicity include dry, fissured skin, brittle
nails, cracks in the corners of the mouth and chapped lips, fatigue,
nausea, irritability, gingivitis, alopecia, and
>> NOTE: Each serving of Ellagic Insurance Formula
contains 10,000IU of Vitamin