Forget about fad diets and surgery. Researchers from ETH-Zurich have come up with a potential high-tech solution to the ongoing obesity epidemic: An implantable slimming aid that monitors fat in the blood. In response to elevated levels, it produces a substance that tells the body that it's not hungry.
The implantable genetic circuit, which has only been tested on obese mice, was put together using mostly human biological components. It essentially performs two functions: monitoring the circulating fat levels in the blood, and then, in the event of detecting excess levels, produces a messenger substance that conveys an "I'm not hungry" cognitive response (or satiety).