DASH diet

The DASH diet (Dietary Approaches to Stop Hypertension) is a diet promoted by the National Heart, Lung, and Blood Institute (part of the NIH, an organisation part of the government of the USA) to control hypertension. A major feature of the plan is limiting intake of sodium, and it also generally encourages the consumption of nuts, whole grains, fish, poultry, fruits and vegetables while lowering the consumption of red meats, sweets, and sugar. It is also "rich in potassium, magnesium, and calcium, as well as protein and fiber."

The DASH diet is based on NIH studies that examined three dietary plans and their results. None of the plans were vegetarian, but the DASH plan incorporated more fruits and vegetables, low fat or nonfat dairy, beans, and nuts than the others studied. Not only does the plan emphasize good eating habits, but also suggests healthy alternatives to "junk food" and discourages the consumption of processed foods. The NIH has published a guidebook, "Your Guide to Lowering your Blood Pressure With DASH", which details the nutrition facts of popular mainstream food items and their healthy alternatives. The manual also provides samples of meal plans and proportions along with their associated nutritional information. The last pages of the manual provides a list of resources and how to obtain them.

The diet reduced systolic blood pressure by 6 mm Hg and diastolic blood pressure by 3 mm Hg in patients with normal blood pressure. Those with hypertension dropped by 11 and 6, respectively. There are several eating plans included in the diet, with the daily caloric intake ranging from 1900 to 2500 dietary calories.