Dietary and other lifestyle factors play a major role in the prevalence of
hypertension. Many of the behaviours likely to reduce blood pressure also h
ave independent beneficial effects on other cardiovascular risk factors to
general health and survival. This is particularly the case with weight cont
rol, exercise, dietary patterns characterised by a low intake of saturated
fat and a high intake of fruit, vegetables and fish and moderation of heavy
alcohol consumption. High salt intakes remain a major contributor to hyper
tension, especially when potassium intake is low. Smoking has a dominant ef
fect in increasing cardiovascular risk in hypertensives. Clustering of risk
factors is often associated with clustering of unhealthy lifestyle charact
eristics and both are most prominent in lower socio-economic groups and in
Developing Countries adopting a more sedentary lifestyle and Western diet p
atterns. Recent trials suggest substantial cardiovascular benefits by a com
bination of weight control and sodium moderation in the elderly, by non-veg
etarian diets rich in fruit and vegetables and low in saturated fat, and by
incorporation of regular fish meals into weight control diets.