How much does weight loss affect hypertension?

Abstract

Weight loss of 4 kg by diet reduces systolic and diastolic blood pressure (BP) by 4.5 and 3.2 mm Hg, respectively (SOR: A, systematic review with consistent findings). Weight loss of 1 to 1.2 kg by exercise may produce small reductions in systolic or diastolic BP (SOR: B, mixed quality of studies). Available evidence is inadequate to examine the combined effects of diet and exercise.