WebMD News from HealthDay
By Randy Dotinga
HealthDay Reporter
THURSDAY, Sept. 4, 2014 (HealthDay News) -- Could eating foods rich in potassium, such as bananas and potatoes, help lower the risk of stroke and an earlier death for older women?
Possibly, suggest the findings from a new study. But the research is too preliminary to confirm that potassium alone -- and not a better overall diet -- actually plays a major role in helping women avoid strokes and live longer.
However, the study's findings were significant enough for one of the study's co-authors to make this recommendation: "Postmenopausal women should eat more potassium-rich foods, such as fruits, vegetables, beans, milk and unprocessed meats in order to lower their risk of stroke and death," said Sylvia Wassertheil-Smoller, professor emerita with the department of epidemiology & population health at Albert Einstein College of Medicine in New York City.
Potassium is an important mineral that helps the body maintain a balance of fluid and minerals, according to the Academy of Nutrition and Dietetics. It also helps blunt some of the harmful effects of sodium on blood pressure.
Most Americans don't get enough potassium in their diets. A 2012 study led by the U.S. Centers for Disease Control and Prevention found that fewer than 2 percent of American adults surveyed consumed at least the recommended daily amount of potassium -- 4,700 milligrams (mg).
Potassium is found in many foods, according to the U.S. National Library of Medicine and the Academy of Nutrition and Dietetics, such as fruits and vegetables like broccoli, peas, tomatoes, potatoes (especially their skins), prunes, bananas, citrus fruits, strawberries and apricots (especially dried ones). Potassium is also found in milk, yogurt, soy products, nuts, meat and certain kinds of fish, such as halibut and tuna.
People can also get potassium through vitamin supplements, although the new study only looked at potassium consumption through food. "The amount of potassium in a multivitamin supplement is small, and the contribution from supplements to overall potassium intake was minor," Wassertheil-Smoller said. "It is possible that supplements may help women get an adequate amount of potassium in their diet, though we encourage women to eat more natural potassium-rich foods."
In the new study, the researchers tracked more than 90,000 postmenopausal women aged 50 to 79 for an average of 11 years.
The average daily intake of potassium was just over 2,600 mg per day. The lowest potassium group consumed less than 1,925 mg daily. The highest group consumed more than 3,194 mg per day, according to the study.
The researchers found that women who consumed the most potassium were 10 percent less likely to die during the study period and 12 percent less likely to suffer a stroke compared to those who ate the least potassium.
source : Study Links Potassium to Fewer Strokes in Older Women
