Beta-carotene — an extra layer of protection against cancer and eye failure
Beta-carotene belongs to large group of compounds known as
carotenoids that have been widely studied for their protective
effects against cancer and heart disease. Beta-carotene is a
source of vitamin A — the body converts beta-carotene into vitamin
A as needed.
Demonstrated applications for beta-carotene supplementation include:
preventing or inhibiting cancers of lung, skin, colon, stomach, and liver
reducing the risk of cataracts among smokers
reducing the risk of advanced Age-related Macular Degeneration
Beta-carotene is also used routinely to treat certain photosensitivity diseases.
Generally speaking, the effectiveness of beta-carotene is enhanced when it is combined with other carotenoids, such as lycopene
and lutein.
The bioavailability of oral beta-carotene supplements is low but can be increased about 60% by adding a piperine supplement
(such as Bioperine®) at 5 mg/day.
Read Beta-caroteine Monograph
Beta-carotene belongs to large group of compounds known as
carotenoids that have been widely studied for their protective effects
against cancer and heart disease. Beta-carotene is thought to be an
antioxidant, but its primary role in nutrition is as a source of
vitamin A — the body converts beta-carotene into vitamin A as needed.
Many studies have shown that beta-carotene
supplementation can prevent or inhibit various cancers — such as
cancers of lung, skin, colon, stomach, and liver. But recent studies
have also shown that nicotine and heavy alcohol usage can reverse this
effect. A similar phenomenon has been seen in heart disease —
beta-carotene is protective except in smokers and drinkers, where it
becomes a liability.
On the other hand, beta-carotene
supplementation (at 50 mg on alternate days) has been shown to reduce
the risk of cataracts among smokers by about 25%. Among non-smokers,
beta-carotene showed no cataract inhibition, but appeared to reduce the
risk of advanced Age-related Macular Degeneration by about 25%.
Beta-carotene is also used routinely to treat certain photosensitivity
diseases.
Generally speaking, the effectiveness of beta-carotene is enhanced when it is combined with other carotenoids, such as lycopene
and lutein.
The bioavailability of oral beta-carotene supplements is very low but can be increased about 60% by adding a piperine supplement
(such as Bioperine®) at 5 mg/day. Animal experiments suggest that a zinc supplement might act similarly.
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