More Potassium, Less Sodium May Offer Better Control Of Hypertension: Study

Tackling hypertension may require more than simply cutting down on salt. A new scientific report has found that increasing dietary potassium alongside reducing sodium intake could offer a more effective strategy for controlling high blood pressure, prompting researchers to call for a shift in public health recommendations.

Hypertension affects more than 1.28 billion adults worldwide and remains one of the leading risk factors for heart disease, stroke and kidney disorders. While existing dietary guidelines have largely focused on reducing sodium consumption, the latest report argues that equal emphasis should now be placed on increasing potassium intake to improve cardiovascular health.

Published in the American Journal of Clinical Nutrition, the peer-reviewed report was prepared by a team of physicians and nutrition experts led by Naomi Fukagawa, Professor Emerita of Medicine at the Robert Larner College of Medicine, University of Vermont.

The researchers examined current evidence on sodium and potassium intake, assessed challenges in implementing dietary recommendations and outlined future priorities for research and public health policy.

The report concluded that excessive sodium intake and inadequate potassium consumption are two major, yet modifiable, contributors to high blood pressure. According to the authors, addressing both simultaneously is likely to have a greater impact than focusing exclusively on reducing salt intake.

"It is time to view dietary interventions holistically because food components interact and physiology is integrative across systems," Dr. Fukagawa said. "Growing evidence shows that increasing dietary potassium as well as reducing sodium intake work together to better manage hypertension."

The findings are particularly relevant for India, where hypertension has emerged as a major public health challenge. Rapid urbanisation, changing dietary habits, increased consumption of processed and packaged foods, sedentary lifestyles and rising obesity have contributed to a growing burden of high blood pressure across both urban and rural populations.

Health experts estimate that a substantial proportion of adults with hypertension remain undiagnosed, while many of those receiving treatment fail to achieve adequate blood pressure control.

India has also witnessed a steady rise in cardiovascular diseases, which account for a significant share of premature deaths. Public health initiatives have traditionally encouraged people to limit salt consumption, but experts say dietary improvements must now extend to increasing intake of potassium-rich foods as well.

Potassium plays an important physiological role by helping regulate fluid balance, supporting nerve and muscle function and counteracting some of sodium's effects on blood pressure. Diets rich in fruits, vegetables, pulses, legumes and dairy products naturally provide higher amounts of potassium while offering additional nutritional benefits.

The report notes that potassium intake remains below recommended levels in both developed and developing countries despite widespread evidence supporting its cardiovascular benefits. Modern diets increasingly rely on processed foods that are typically high in sodium but relatively poor in potassium, thereby disrupting the natural balance between the two nutrients.

For India, this imbalance has important dietary implications. Traditional meals consisting of fruits, vegetables, lentils, millets and other minimally processed foods are naturally rich in potassium. However, increasing dependence on packaged snacks, instant foods, processed meats and restaurant meals has significantly raised sodium intake while reducing the consumption of potassium-rich foods.

The authors suggest that dietary recommendations should move beyond the narrow message of "eat less salt" and instead encourage a balanced dietary pattern that simultaneously limits sodium and increases potassium intake through whole foods. Such an approach, they argue, could improve blood pressure control while reducing the long-term risk of cardiovascular disease.

The report also discusses the food industry's role in improving dietary quality. Although potassium salts can replace some sodium in processed foods, their use is limited because excessive amounts may produce a metallic taste, requiring manufacturers to strike an acceptable balance between taste and nutritional value.

The researchers acknowledge that translating these findings into public health policy will require coordinated efforts involving governments, healthcare professionals, the food industry and consumers. Nutrition education, clearer food labelling and reformulation of processed foods could help improve the sodium-potassium balance in everyday diets.

The authors emphasise that sodium reduction should continue to remain the cornerstone of hypertension prevention. However, they argue that emerging evidence warrants broadening current recommendations to give equal importance to increasing potassium intake.

For countries such as India, where hypertension is becoming increasingly common and cardiovascular diseases continue to impose a substantial health and economic burden, the findings reinforce the importance of promoting healthier eating patterns based on fresh fruits, vegetables, legumes and other potassium-rich foods, alongside sustained efforts to reduce excess salt consumption.