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Hibiscus tea lowers blood pressure in trial.(Clinical Rounds)
New Orleans -- Quaffing three cups of hibiscus tea daily for 6 weeks resulted in a mean 7.2-mm Hg reduction in systolic blood pressure in mildly hypertensive or prehypertensive adults in a randomized double-blind placebo-controlled trial.
"This suggests regularly incorporating hibiscus tea into the diet may help control blood pressure in people at risk of developing hypertension," Diane L. McKay, Ph.D., said at the annual scientific sessions of the American Heart Association.
The public health implications of a blood pressure reduction of this magnitude, if extended to a large population, could be profound. The National High Blood Pressure Education Program Coordinating Committee has estimated that a mere 3-mm Hg reduction in systolic blood pressure (SBP) would reduce the relative risk of death due to stroke by 8%, death due to coronary artery disease by 5%, and all-cause mortality by 4% (JAMA 2002;288:1882-8), noted Dr. McKay, of the Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University Boston.
She reported on 65 prehypertensive or mildly hypertensive adults who took part in a 6-week double-blind study in which they consumed three 8-ounce cups of hibiscus tea daily or a placebo beverage similar in color and taste. Mean SBP dropped by 7.2 mm Hg in the herbal tea group from a baseline of 129.4 mm Hg, compared with a 1.3-mm Hg decline in the control group. Diastolic blood pressure (DBP) fell by a mean of 3.1 mm Hg from a baseline of 78. 9 mm Hg and mean arterial pressure dropped by 4.5 mm Hg from 95.7 mm Hg at enrollment, although neither of these changes achieved statistical significance.
However, the herbal tea's antihypertensive effect ...
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Source: HighBeam Research, Hibiscus tea lowers blood pressure in trial.(Clinical Rounds)