If you’re a woman, you could actually do yourself harm by drinking grapefruit juice on a daily basis.
A long-term study of 80,000 female nurses, conducted by the Harvard Medical School and Brigham and Women's Hospital in Boston, found that the possibility of kidney stones was boosted by 44% for those who drank an 8-ounce glass of the juice each day.
On the other hand, researchers found, a cup of tea decreases a woman's chances of getting kidney stones by 8%. Coffee cuts it by 9% and moderate consumption of wine by 20%.
But grapefruit juice does have its proponents. A newly identified compound in it named bergamottin boosts the potency of a wide variety of drugs, according to joint University of Michigan, Parke-Davis Pharmaceutical Company research. In the test tube, bergamottin incapacitates an enzyme that breaks down drugs, hence greatly increasing the amount of the drug available to the body.
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