Diet plays an essential role in lowering blood pressure and a growing body of evidence recommends certain foods for their blood pressure-lowering properties. One study, published in the

Journal of the American Heart Association, makes a strong case for supplementing a diet low in saturated fats with walnuts to help lower blood pressure. In a randomised, controlled trial,

researchers examined the effects of replacing some of the saturated fats in participants' diets with walnuts. Saturated fat is the kind of fat found in butter, lard, ghee, fatty meats

and cheese. Eating a diet high in saturated fat is associated with raised levels of non-HDL (bad) cholesterol, a waxy substance found in your blood that is tied to cardiovascular