Bypass surgery has become the most common subjects of discussion these days. By-pass surgery is needed when there is a blockage in the blood vessels supplying heart especially when the blood vessel supplying blood to the left ventricle gets blocked. This blockage is caused by deposition of fat or cholesterol narrowing the lumen of blood vessel. This narrowing increases intravascular pressure resulting in injury of inner layer of coronary artery which will eventually lead to formation of clot thus leading to stroke or heart attack. This is initially prevented by stents or angioplasty, bypass surgery is advised when this blockage cannot be rectified with above procedures. Let us now discuss on why coronary artery gets blocked or reasons for coronary artery disease (CAD). Increased blood cholesterol, sedentary lifestyle, diabetes mellitus and smoking are considered to be some of the reasons for CAD. Sedentary lifestyle? or not exercising will lead to increased cholesterol and this cholesterol gets deposited, diabetes mellitus also affects blood vessels, in smoking due to release of free radicals and also deposition of fat (called arteriosclerosis and when large vessels are affected it is called atherosclerosis). Though according to recent studies there is no relationship between fat consumption and CAD, obesity is one of the main reasons for CAD. This can be prevented by adopting a healthy lifestyle by increasing vegetables and fruits in your diet and reducing meat and dairy products, regular exercise (walk for at least 20 minutes twice a week), stop smoking, control diabetes with a combination of proper diet, exercise, and medication. The cost of bypass surgery ranges from 1.5 lakh to 3 lakhs, it can go a little higher in case of known diabetics. Due to better technology, now bypass has become a keyhole procedure previously it was open heart procedure. The patient undergoing surgery can get back to his work in 10 days. Remember the old saying "Prevention is better than cure" and start exercising. If you are above 40 years, it is always advisable to have a cardiac profile done as a preventive measure. I also learned recently that pomegranate juice taken every reduces the risk of stroke by preventing fat deposition, try a cup of pure pomegranate juice everyday morning.