The volume of the fat cells forming the adipose tissue is higher in people consuming a fat-rich diet without performing required physical activity. This leads to obesity. Obesity is a condition caused by excess accumulation of fat in the body. A person with body mass index higher than 25 is said to be obese.
The surgical technique in which the fat cells are removed, or sucked is known as liposuction. Liposuction for fat loss should be opted in the case of failure of the diet and exercise method. However, even after liposuction performed, it is essential that the person maintains a healthy diet devoid of bad cholesterol. This is essential, because if the person does not cut down dietary fat intake, the fat accumulation will begin again. Hence, only liposuction is not a permanent way to keep the weight off.
Gastric surgery is also called weight loss surgery, or bariatric surgery. In gastric surgery, the stomach and distal region of the intestine is surgically divided into smaller regions. As a result of the small size of the stomach and intestine, the size of the person's meal is reduced. In this way calorie intake is controlled that permanently lowers the chances of obesity. However, it should be adopted only when diet and exercise do not yield results in controlling the weight. The disadvantage of gastric surgery is that it can result in the deficiency of nutrients.
Liposuction is not a permanent treatment for obesity since it involves removal of the fat cells. Consumption of high calories after liposuction can again cause obesity.
Gastric surgery involves division of gastric regions (stomach and small intestine) into smaller portions such that the overall size of the gastric regions is reduced. This leads to lower intake of food (and calories) post the surgery.