The DASH diet is an eating plan designed to help prevent and control high blood pressure. It focuses on fruits, vegetables, whole grains, and low-fat dairy foods rich in nutrients like potassium, calcium, and magnesium. The standard DASH diet limits sodium to 2,300 mg per day while the lower sodium version restricts sodium further to 1,500 mg daily. Both versions aim to reduce sodium intake compared to a typical American diet of over 3,400 mg per day.