Liposuction, or simply lipo, is a type of fat removal procedure used in plastic surgery.Evidence does not support an effect on weight beyond a couple of months and it does not appear to affect obesity related problems In the United States it is the most commonly done cosmetic surgery.

Serious complications include deep vein thrombosis, organ perforation, bleeding, and infection.[6] Death occurs in about one per ten thousand cases.

The procedure may be performed under general, regional, or local anesthesia. It then involves using a cannula and negative pressure to suck out fat. It is believed to work best on people with a normal weight and good skin elasticity.

While the suctioned fat cells are permanently gone, after a few months overall body fat generally returns to the same level as before treatment. This is despite maintaining the previous diet and exercise regimen. While the fat returns somewhat to the treated area, most of the increased fat occurrs in the abdominal area. Visceral fat ⁠— ⁠the fat surrounding the internal organs ⁠— ⁠increases, and this condition has been linked to life-shortening diseases such as diabetes, stroke, and heart attack.