Hi...., Lifestyle changes can help you control and prevent high blood pressure, even if you're taking blood pressure medication.... Eat a healthy diet like fruits, vegetables, whole grains, poultry, fish and low-fat dairy foods. Get plenty of potassium, which can help prevent and control high blood pressure. Eat less saturated fat and trans fat.... Decrease the salt in your diet lower sodium level — 1,500 milligrams (mg) a day .....