New study has shown that high Protein diet may reduce risk of stroke. Protein intake is associated with other nutrients and elements such as potassium, magnesium and dietary fiber said Dr. Xinfeng Liu of Nanjing University School of Medicine in China.
Close to 800,000 people in the United States have a stroke each year, according to the Centers for Disease Control and Prevention.
The new review includes seven studies, each of which followed a group of 255,000 adults for at least 10 years in U.S, Japan and Sweden.
Four of the studies took place in the U.S., two in Japan and one in Sweden. Most considered any type of stroke, but two focused on fatal strokes.
Six of the studies found that as protein intake increased, stroke risk decreased. But in three of those studies the relationship was weak enough that it could have been due to chance, according to findings published in Neurology.
All together, the review authors found that people who ate the most protein were about 20 percent less likely to have a stroke than those who ate the least. An extra 20 grams of protein per day was linked to a 26 percent lower stroke risk.
Most of the studies accounted for age, sex and diabetes history as factors in stroke risk.
Eating protein may help lower blood pressure, which in turn lowers stroke risk, the authors write.
“The results of this meta analysis should be interpreted carefully,” said Dr. Arturo Tamayo, who studies stroke prevention at the University of Manitoba in Winnipeg. He co-wrote an editorial accompanying the analysis.
Diet can influence stroke risk, but other risk include Genetic predisposition for increased cholesterol, age and other medical conditions like high blood pressure or heart disease.
“The results of this study show us a ‘trend’ of a positive factor in diet that can contribute to decrease the risk of stroke,” he said.
Animal versus plant protein
“Among different protein sources, fish consumption has been associated with decreased risk of stroke, whereas red meat consumption has been associated with increased stroke risk,” Liu said. Plant protein derived from pulse and grain also significantly decrease chance of stroke.
The saturated fat and cholesterol in red meat may increase stroke risk, so red meat isn’t the best source of protein for people worried about stroke, he said.
“Thus, stroke risk may be reduced by replacing red meat with other protein sources such as fish,” Liu said. “Fish contains omega-3 fatty acids and some other nutritional elements including protein that may protect against stroke.”
“As stroke neurologists we aim to change as much as possible all those factors that can potentially be modified, like cholesterol and hypertension, among others and lifestyle factors such as lack of exercise, cigarette smoking, alcohol consumption and diet,” Tamayo said.
It is important that people understand how much diet can influence the advent of multiple diseases, he said.
“Global strategies to prevent stroke should start early in life with an adequate diet education for all people regardless of their risk of stroke,” he said.
The human diet and stroke prevention are both incredibly complex, he said, but current evidence tilts toward a largely vegetarian Cretan Mediterranean diet high in whole grains, olive oil, fish and fruit, and low in red meat as beneficial for stroke reduction.