Heart diseases are range of conditions affecting normal function of heart. It includes coronary artery diseases leading to heart attack, rhythm problems, valvular diseases, and congenial heart diseases. The risk factors include physical inactivity, alcohol or smoking, unhealthy diet, uncontrolled blood pressure and blood sugar levels, irregular sleep, family history, obesity, high cholesterol, stress, age. Many of the risk factors can be reduced by modifying the lifestyle one leads, controlling blood pressure and diabetes.