Protein supplements show blood pressure lowering activity

By Stephen Daniells

- Last updated on GMT

Protein supplements show blood pressure lowering activity

Related tags Blood pressure

Daily supplements of milk and soy protein are both effective at lowering blood pressure, and both performed better that carbohydrates, say results of a clinical trial.

Milk and soy protein supplements were associated with a 2.3 and 2.0 mmHg reduction in systolic blood pressure, compared with a refined carbohydrate supplement, according to findings of a randomized clinical trial published in Circulation​.

"The systolic blood pressure differences we found are small for the individual, but they are important at the population level,"​ said study leader Jiang He, MD, PhD, from Tulane University.

According to previous research, the New Orleans-based scientists note that a 2 mmHg decrease in systolic blood pressure could lead to 6 percent fewer stroke-related deaths, a 4 percent lower rate of heart disease deaths and a 3 percent reduction in overall deaths among Americans.

According to Dr He, the study's findings suggest that partly replacing refined carbohydrates with foods or drinks high in soy or milk protein may help prevent and treat high blood pressure.

High blood pressure (hypertension), defined as having a systolic and diastolic blood pressure (BP) greater than 140 and 90 mmHg, is a major risk factor for cardiovascular disease (CVD) - a disease that causes almost 50 per cent of deaths in Europe, and reported to cost the EU economy an estimated $200 bn per year.

Study details

The researchers recruited 352 people aged 22 or over with pre-hypertension and stage-1 high blood pressure and randomly assigned them to receive either 40 grams per day of protein from soy or milk, or carbohydrate supplementation each for eight weeks. After each intervention, the participants went through a three-week wash out period before crossing over to a different group.

Results showed that soy and milk protein supplementations were associated with reductions in systolic blood pressure of 2.0 and 2.3 mmHg, respectively, but no changes in diastolic blood pressure, compared with the carbohydrate group. Systolic function related to the contraction of the heart, whereas diastolic relates to the filling of the heart with blood.

"Some previous observational research on eating carbohydrates inconsistently suggested that a high carbohydrate diet might help reduce blood pressure,"​ said He.

"In contrast, our clinical trial directly compares soy protein with milk protein on blood pressure, and shows they both lower blood pressure better than carbohydrates."

The researchers concluded: “These findings suggest that partially replacing carbohydrate with soy or milk protein might be an important component of nutrition intervention strategies for the prevention and treatment of hypertension.”

Source: Circulation
Published online ahead of print, doi: 10.1161/​CIRCULATIONAHA.110.009159
“Effect of Dietary Protein Supplementation on Blood Pressure: A Randomized, Controlled Trial”
Authors: J. He, M.R. Wofford, K. Reynolds, J. Chen, C-S. Chen, L. Myers, D.L. Minor, P.J. Elmer, D.W. Jones, P.K. Whelton

Related news

Related products

show more

Krill oil supports six key areas of healthy aging

Krill oil supports six key areas of healthy aging

Content provided by Aker BioMarine | 14-Feb-2024 | White Paper

The global population is getting older—according to WHO by 2050 the world’s population over 60 years will double and the population above 80 years will...

Latest Research Findings on Omega-3s for Heart Health

Latest Research Findings on Omega-3s for Heart Health

Content provided by GC Rieber VivoMega™ | 12-Feb-2024 | White Paper

According to Grandview Research, the global omega-3 market is a $2.62 billion market and is one of the fastest-growing segments in the dietary supplement...

Dynamic Duo - More Power, Less Fatigue

Dynamic Duo - More Power, Less Fatigue

Content provided by Enovate Biolife LLC | 23-Jan-2024 | White Paper

Better physical performance & vitality have deep connections to muscular as well as cardio-respiratory health.

Related suppliers

Follow us


View more