Eating more beans, lentils, and soya products could help protect against the dangers of high blood pressure. New evidence suggests that adding these affordable staples to your daily meals may lower your risk by nearly a third.
Study Findings on Pulses and Soya
Scientists have identified that consuming about 170g of pulses and up to 80g of soya daily offers the best protection. This simple dietary shift provides a natural way to manage cardiovascular health through everyday food choices. Researchers analysed data from 12 studies to understand how these plant-based proteins affect our bodies. Their findings, featured in the journal BMJ Nutrition Prevention and Health, highlight a significant link between these foods and heart safety.
The team, which included experts from King's College London, found that people with the highest intake of pulses and soya saw their risk of hypertension drop by 16% and 19% respectively. They noted that 100g of pulses is equivalent to a serving size of approximately one cup or five to six tablespoons of cooked beans, peas, chickpeas, lentils, soybeans, or a palm-size serving of tofu.
Health Benefits and Recommendations
Common soya options such as miso, tempeh, and edamame were also highlighted as beneficial choices for the kitchen. The researchers said: Several potential mechanisms and components within legumes and soya foods may explain or contribute to the observed benefits on hypertension risk, including their content of minerals, fibre and bioactive compounds. Both legumes and soy are high in potassium and magnesium, which have demonstrated blood pressure-lowering effects. Legumes and soya are also rich in dietary fibre, which is linked to lower rates of hypertension and overall cardiovascular disease risk.
While the advantages for heart health are clear, many people are currently missing out on these vital nutrients. The study stated: Current legume consumption across Europe and the UK remains below dietary recommendations, with average intakes of only 8-15 g/day, far below the recommendations of 65 to 100 g/day recommended for overall cardiovascular health. The authors concluded that their findings provide further evidence in support of dietary recommendations to the public to prioritise and integrate legumes and soya foods as healthy protein sources in the diet. This encourages a shift away from less healthy protein sources in favour of plants.
Expert Opinions
Tracy Parker at the British Heart Foundation (BHF) said: This new study adds to the growing evidence that legumes and soy foods can support healthier blood pressure as part of a whole-food, plant-based diet. While the findings are observational and can't prove cause and effect, they reinforce existing UK guidance to eat more beans, lentils and other plant-based foods. Legumes and soya are naturally low in saturated fat and salt, and provide fibre, potassium, magnesium and plant proteins - nutrients known to help maintain healthy blood pressure. They also tend to replace less healthy options on the plate, which may contribute to the overall benefit. The amounts linked with lower risk in this study – around 170g per day of legumes and 60-80g per day of soya foods – make them an affordable and easy choice to incorporate into everyday meals. Simple swaps, like choosing beans, lentils, chickpeas or tofu in place of processed meats, can make a meaningful difference and help support healthier blood pressure as part of an overall balanced diet.
Maeva May from the Stroke Association highlighted how these small changes can save lives. Every day in the UK, 240 people are left with the life-changing consequences of stroke. We've known for a long time that a Mediterranean diet, rich in soya and legumes, reduces the risk of stroke. It protects heart and brain health by helping to prevent high blood pressure, which is the cause of around half of all strokes. We can help to manage our blood pressure by making small but important lifestyle changes, including modifying our diet to include more beans and soya, as this encouraging study finds. Ideally, this should be alongside regular exercise, not smoking or vaping, or drinking too much alcohol, to really minimise the chances of having a stroke. In addition to making lifestyle changes, we also encourage people to get their blood pressure checked regularly at the GP or pharmacy as high blood pressure often has no symptoms, yet it is the leading cause of stroke.
