A new scientific discovery, would create a treatment where through the use of the hormone leptin could eliminate the undesirable kilos of more. Enzymes in the human body there are called hormones, which are responsible for controlling various physiological functions. In the case of leptin, this hormone thought this charge to send a message to the brain, to enable the mechanisms that allow to use fats as a source of energy and not other molecules but in the first instance that obesity is debia to the kind of life of sedentary and little practice sports, some scientists about obesity studies have shown that this results from the combination of several factorsone of the factors that most they have been studied during the last 10 years, has been the genetic factor and mostly to genes that are involved in the regulation of leptin in the body. Leptin which takes its name from the Greek LEPTOS, was discovered in 1994 and is associated with the gene ob (lep) which is located on chromosome 7 in humans, leptin is a protein hormone produced by fat cells which enters the bloodstream and travels to the brain, and informs the brain if you need to burn more fats or book them, leptin plays an important role in regulating appetite and metabolism, and therefore in the control of obesity. In people with obesidadlos found leptin levels are usually very high and more than enough to suppress appetite and increase metabolism, this usually does not happen and it is believed that obesity can be result of a leptin resistance, as it is the case with people who suffer from diabetes type 2 and its resistance to insulin. The problem is of course difficult since the human body is extremely complex, suspected that alongside gene OB (LEP) there are other genes involved in regulating appetite and metabolism, leptin also has no biological function in isolation, and the manner in which triggers all the biochemical pathway in the brain has not yet been understood. With insufficient scientific research conducted so far is not of course assert that leptin is a predominant factor in obesity, however with alarming rates of obesity currently growing and the obsession to lose weight eating a millionaire industry against obesity, drug companies and scientists are working together to achieve a cure for obesity. Obesity has become one of the major problems in most industrialized societies, and continues to rise at an alarming rate in the United States, which currently has the highest rates of obesity in all countries of the world, approximately 60 million adult sonclasificados how obese and 9 million have morbid obesity.