Eating a Handful of Nuts Daily Linked to 20 Percent Lower Blood Pressure Risk
A meta-analysis of eight studies involving more than 143,000 participants found that eating one handful of nuts per day is associated with a 20 percent lower risk of developing high blood pressure. The research, published in the British Journal of Nutrition in August 2026, found the strongest benefits at around 30 to 35 grams of nuts daily. Experts say the effect is likely driven by magnesium, potassium, and unsaturated fats found in nuts.
Eating about one handful of nuts per day is linked to a 20 percent lower risk of developing high blood pressure, according to a new meta-analysis published in the British Journal of Nutrition.
Researchers analyzed data from eight prospective cohort studies involving 143,380 participants aged 18 to 87 from the United States, Asia, and Europe. They found that people with the highest nut consumption had a 16 percent lower risk of hypertension compared to those who ate the fewest nuts.
The dose-response relationship was clear: each additional 28-gram serving of nuts per day was associated with a 20 percent reduction in relative risk. The benefits appeared to plateau at around 30 to 35 grams daily, where the modeled risk reduction reached about 26 percent.
Researchers point to several nutrients in nuts that support heart health. Magnesium acts as a natural calcium channel blocker, helping blood vessels relax. Potassium helps offset the effects of sodium. Walnuts, peanuts, and almonds are also high in L-arginine, an amino acid that helps widen blood vessels.
Experts caution that the benefits apply to raw, dry-roasted, or unsalted nuts. Salted or sugar-coated varieties can raise sodium intake and cancel out the cardiovascular gains.
Because nuts are calorie-dense, health professionals recommend swapping them in for less healthy snacks rather than adding them on top of an existing diet.
The study was observational, meaning it shows an association rather than proving nuts directly cause lower blood pressure. Researchers say nuts should be part of an overall heart-healthy eating pattern and are not a substitute for prescribed blood pressure medications.
