Blood Pressure Regulation

Blood pressure is the single largest modifiable contributor to global cardiovascular death. The relationship with risk is continuous from around 115/75 mmHg upward, and each 10 mmHg reduction in systolic pressure lowers major cardiovascular events by roughly 20% and stroke by 27%. Crucially, most of the population burden sits in the elevated and stage-1 range rather than in severe hypertension — which is where lifestyle and nutritional interventions have the greatest leverage, often before medication is indicated.

Start with the levers that have the largest effect sizes. Reduce sodium toward 1500-2300 mg/day, which lowers systolic pressure by 5-6 mmHg in hypertensive adults, and raise potassium to 3500-4700 mg/day from vegetables, fruit and legumes unless kidney function is impaired. A DASH-pattern diet delivers around 11 mmHg. Aim for 150 minutes weekly of aerobic exercise plus isometric handgrip training three times a week, which has surprisingly strong data at roughly 8 mmHg. Each kilogram of weight loss adds about 1 mmHg. Limit alcohol to two units a day or fewer. On top of that foundation, dietary nitrate from beetroot juice at around 400 mg gives 4-5 mmHg, magnesium at 300-500 mg/day gives 2-3 mmHg in deficient individuals, taurine at 1.5-3 g/day around 3 mmHg, and L-citrulline at 3-6 g/day roughly 4 mmHg. These effects are additive with each other and with medication, so monitor when combining.

• •Sodium reduction to 1500-2300 mg/day
• •Potassium intake of 3500-4700 mg/day from whole foods
• •DASH or Mediterranean dietary pattern
• •150 minutes weekly aerobic exercise
• •Isometric handgrip training three times weekly
• •Weight loss where BMI is elevated
• •Alcohol moderation
• •Seven to nine hours of sleep and treatment of sleep apnoea
• •Stress reduction through paced breathing or meditation