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Many
studies have focused on the health benefits of vitamin E, which
consists of both tocopherols and tocotrienols. And while much attention
has been directed toward tocopherols -- derived from corn, wheat and
soybean -- tocotrienols seem to provide greater antioxidant properties
and are being noticed more in scientific research.
While tocotrienols come from:
... the best ones appear to be derived from rice bran oil, which
is contained in the outer grain hull of rice. Its properties appear
to inhibit the activity of HMG-CoA reductase, an enzyme involved
in cholesterol biosynthesis.
According to a study, tocotrienols from rice brain oil lowered
LDL cholesterol levels in animals by 62 percent and overall cholesterol
numbers by 42 percent. Ongoing research shows the component may
also have potential as an anti-cancer and anti-infection agent in
humans.
The Study
Since taking any form of vitamin E for an extended period of time
could be harmful, researchers sought to discover the minimum dose
of tocotrienols that provided the maximum antioxidants and effectively
lowered cholesterol:
Based on studies with rats (and estimating those figures for
humans) the effective dose of tocotrienols for a patient weighing
154 pounds is 560 IU/day.
Aside from cholesterol benefits, previous research on animals has
shown tocotrienols clear toxic substances from the liver and can
reduce or stabilize liver tumors.
Food
and Chemical Toxicology May 2005, Vol. 43, Issue 5: 747-753
Science
Daily May 12, 2005
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