Am J Clin Nutr. 1988 Sep; 48(3 Suppl): 801-5.

Vegetarian diet in mild hypertension: effects of fat and fiber.

Margetts BM, Beilin LJ, Armstrong BK, Vandongen R.

NHMRC Research Unit in Epidemiology and Preventive Medicine, University Department of Medicine, QEII Medical Centre, Nedlands, Western Australia.

Recently, a relatively small reduction in systolic blood pressure (approximately 5 mm Hg) was estimated to substantially reduce the numbers of major coronary events. The blood pressure reduction is about the same as the difference seen between typical ovolactovegetarians and omnivores. This paper reviews the evidence for the blood pressure-lowering effects of a vegetarian diet on those with elevated blood pressure. It also reviews whether the effect on blood pressure of a vegetarian diet can be attributed either to elevation of the dietary P:S ratio or to fiber intake alone.