Sep 13, 2014 02:31 PM EDT By J Baulkman, UniversityHerald Reporter

People who consume a high-protein diet may be at a lower risk of developing high blood pressure, according to a recent study.

Researchers from Boston University School of Medicine found that participants consuming the highest amount of protein (an average of 100 g protein/day) had a 40 percent lower risk of having high blood pressure compared to the lowest intake level.

One of three U.S. adults has hypertension and 78.6 million are clinically obese, a risk factor for the development of hypertension. Because of the strain that it puts on blood vessel walls, high blood pressure is one of the most common risk factors of stroke and an accelerator of multiple forms of heart disease, especially when paired with excess body weight.

"Protein intake may play a role in the long-term prevention of [high blood pressure,]" Lynn Moore, corresponding author of the study and an associate professor of medicine, said in a statement. "This growing body of research on the vascular benefits of protein, including this study, suggests we need to revisit optimal protein intake for optimal heart health."

For the study, researchers analyzed protein intakes of healthy participants from the Framingham Offspring Study and followed them for development of high blood pressure over an 11-year period. They found that adults who consumed more protein, whether from animal or plant sources, had statistically significantly lower systolic blood pressure and diastolic blood pressure levels after four years of follow-up.

In general, these beneficial effects were evident for both overweight (BMI ≥25 kg/m2) and normal weight (BMI <25 kg/m2) individuals. They also found that consuming more dietary protein also was associated with lower long-term risks for HBP. When the diet also was characterized by higher intakes of fiber, higher protein intakes led to 40 to 60 percent reductions in risk of high blood pressure.

The findings were recently published in the American Journal of Hypertension.

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