For some people, losing weight through dietary changes and exercise alone is a continual struggle. Obesity is a growing problem in the UK and in many other parts of the world, and it is a crippling disease that can affect every aspect of our lives. The health concerns and the poor self-image associated with it make weight loss and weight control two of the primary goals in achieving a long and healthy life. This has led to the development of prescription weight loss treatments like Xenical. These tablets contain the lipase inhibitor Orlistat and they work by reducing the amount of fat that the body absorbs during digestion. To achieve the desired results, this medicine should be combined with lifestyle and dietary changes.