Eat a heart-healthy diet

Consistently eating a diet rich in fruits, vegetables, whole grains and low-fat dairy products can help protect your heart. Legumes, low-fat sources of protein and certain types of fish can also reduce your risk of heart disease.

Limiting your intake of certain fats is also important. Of the types of fat — saturated, polyunsaturated, monounsaturated and trans fat — saturated fat and trans fat increase the risk of coronary artery disease by raising blood cholesterol levels. Saturated fat is the more worrisome offender because foods containing this type of fat are more prevalent in typical American diets. Major sources of saturated fat include beef, butter, cheese, milk, and coconut and palm oils.

Heart-healthy eating isn't all about cutting back, though. Most people, for instance, need to add more fruits and vegetables to their diet — with a goal of five to 10 servings a day.

"There's a huge amount of data to suggest that fruits and vegetables are highly effective in preventing not just cardiovascular disease, but cancer and other diseases as well," Dr. Hayes says.

Omega-3 fatty acids, a type of polyunsaturated fat, may decrease your risk of heart attack, protect against irregular heartbeats and lower blood pressure. Some fish are a good natural source of omega-3s. However, pregnant women and women of childbearing age should avoid shark, swordfish, king mackerel and tilefish because they contain levels of mercury high enough to pose a danger to a developing fetus. Omega-3s are present in smaller amounts in flaxseed oil, walnut oil, soybean oil and canola oil, and they can also be found in supplements.

Following a heart-healthy diet also means drinking alcohol only in moderation — no more than two drinks a day for men, one a day for women. At that moderate level, alcohol can have a protective effect on your heart. Above that, it becomes a health hazard.