Those who received a placebo drink improved their reading by only 1 point. The phytochemicals in hibiscus are probably responsible for the large reduction in high blood pressure, say the study authors. Many herbal teas contain hibiscus; look for blends that list it near the top of the chart of ingredients for low blood pressure—this often indicates a higher concentration per serving.

Editor’s Note: Considerable controversy exists about whether fat or cholesterol are, per se, drivers of atherosclerosis. They are implicated in some studies, while others indicate that quality of fat, and placement in a wider dietary pattern, may be more significant to ultimate impact. What seems clear, however, is that a diet high in animal products, sugar, and processed foods is often a recipe for high blood pressure and heart disease.
Diabetics often have lower recommendations for blood pressure, the maximum normal value being seen as 130/80-85. However, it’s questionable whether it’s a good idea to medicate your blood pressure levels down to those values. Diabetics can probably stick to approximately the same upper limit as people with heart disease: 140/90 (according to new studies and expert comments, as well as the latest recommendations from the American Diabetes Association, ADA).
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