Margetts B M, Beilin L J, Vandongen R, Armstrong B K
Br Med J (Clin Res Ed). 1986 Dec 6;293(6560):1468-71. doi: 10.1136/bmj.293.6560.1468.
In a randomised crossover trial 58 subjects aged 30-64 with mild untreated hypertension were allocated either to a control group eating a typical omnivorous diet or to one of two groups eating an ovolactovegetarian diet for one of two six week periods. A fall in systolic blood pressure of the order of 5 mm Hg occurred during the vegetarian diet periods, with a corresponding rise on resuming a meat diet. The main nutrient changes with the vegetarian diet included an increase in the ratio of polyunsaturated to saturated fats and intake of fibre, calcium, and magnesium and a decrease in the intake of protein and vitamin B12. There were no consistent changes in urinary sodium or potassium excretion or body weight. In untreated subjects with mild hypertension, changing to a vegetarian diet may bring about a worthwhile fall in systolic blood pressure.
在一项随机交叉试验中，58名年龄在30至64岁之间、患有未经治疗的轻度高血压的受试者被分为两组，一组为对照组，食用典型的杂食性饮食；另外两组在两个为期六周的时间段内分别食用蛋奶素食饮食。在素食期间，收缩压下降了约5毫米汞柱，恢复肉食后收缩压相应上升。素食饮食带来的主要营养变化包括多不饱和脂肪与饱和脂肪的比例增加，纤维、钙和镁的摄入量增加，蛋白质和维生素B12的摄入量减少。尿钠或钾排泄量以及体重没有持续变化。在未经治疗的轻度高血压受试者中，改为素食可能会使收缩压有明显下降。
