In the study, 18 men and women were asked to eat six to eight golf ball-sized potatoes with their lunch and dinner, as part of their normal diet.
Most of those taking part were overweight or obese and on pills to lower blood pressure.
After a month of the ‘tattie treatment’, their blood pressure readings dropped significantly – suggesting the potatoes were powerful enough to take over when the tablets could not do any more.
In addition, none of the volunteers put on any weight.
Potatoes are thought to have a satiating effect but it is also likely that those taking part in the study cut back on other foods, the American Chemical Society’s annual conference reported.
Those used in the U.S. agriculture department-funded study were purple and so small that they contained as few as 12 calories each, but the researchers believe that ordinary potatoes should also benefit health.
They should be cooked – ideally in the microwave – with their skins on.
This is because many of the health-boosting, blood pressure-lowering chemicals are in the skin.
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