Gastric bypass is one of the common types of bariatric surgeries which involve creating a smaller stomach or shrinking the size of the stomach. It also involves a restructuring of the digestive system by bypassing the first section of the small intestine. Gastric bypass is often recommended to patients who are extremely obese and have been unsuccessful in losing weight through usual diet and exercise routines. It is also recommended if the excess weight is causing major health issues such as heart diseases, hypertension, stroke etc. To be qualified for a gastric bypass one must undergo extensive medical screening. It is also important to make a long-term commitment to a healthy lifestyle and follow-up monitoring to avoid complications from the procedure.