Many factors influence the risk for developing ischemic heart disease, but many of the lifestyle choices used to treat the condition, if introduced early, can also help to prevent it. Not smoking is a key factor in preventing ischemic heart disease. Reducing fat intake, especially consumption of saturated and trans fat, and the amount of refined sugars in your diet is extremely important. Get the recommended daily amount of fruits, vegetables, and fiber to help decrease the risk of clogged arteries and to protect against obesity, high blood pressure, and diabetes. Increasing physical activity and reducing stress levels will also help you to maintain a healthy heart.