Originally published May 25 2005
Rice bran oil shown to drastically, safely reduce cholesterol
by Mike Adams, the Health Ranger, NaturalNews Editor
A natural form of vitamin E found in rice bran oil has been shown to reduce cholesterol in rats up to 42 percent and lower LDL, or "bad" cholesterol, up to 62 percent, according to research in Food and Chemical Toxicology magazine. The rats' diets were supplemented with tocotrienol rich fraction (TRF) isolated from rice bran oil, with no adverse effects. Tocotrienols are a lesser-known form of vitamin E found in barley, palm, oats and rice bran. Dr. Mohammad Minhajuddin and researchers at the University of Rochester say that TRF naturally inhibits the activity of HMG-CoA reductase, an enzyme that synthesizes cholesterol, which is a major factor in heart disease, the leading cause of death in the world.
A form of vitamin E found naturally in rice bran oil lowers cholesterol in rats, according to a new study.
The research, reported in this month's issue of Food and Chemical Toxicology, shows that total cholesterol levels in animals dropped by 42 per cent, and LDL or 'bad cholesterol' levels dropped up to 62 per cent after the rats' diets were supplemented with tocotrienol rich fraction (TRF) isolated from rice bran oil.
The findings support increasing evidence of the benefits of tocotrienols, a form of the vitamin that has been less widely researched than the more well-known tocopherol form.
Researchers writing in the American Journal of Clinical Nutrition earlier this year found that rice bran oil lowered LDL levels in humans by 7 per cent, although they did not identify the compounds present in the oil that were responsible for this effect.
Dr Mohammad Minhajuddin and colleagues from the University of Rochester say that TRF inhibits the activity of HMG-CoA reductase, an enzyme involved in cholesterol biosynthesis.
Cholesterol is a major risk factor for heart disease, the disease that kills more people than any other around the world.
So far, scientists have not found any adverse effects of tocotrienols, says Minhajuddin, a research associate in the Department of Pediatrics.
Minhajuddin also has preliminary, unpublished data from a study he conducted in India, showing that TRF reduces cholesterol in humans as well as in animals.
Five healthy volunteers with total cholesterol levels in the 'normal' range of 170-230 mg/dL, who ingested TRF in capsule form at a dose of 8 IU kg/day for four weeks, saw their cholesterol levels drop by 10 per cent with a 26-per cent decline in LDL-cholesterol levels.
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