Tell me - There is hope for those who follow diets after British and American scientists identified the brain cells responsible for the sense of hunger, and therefore the results of the study constitute a new promising target for the development of drugs for weight loss. Researchers from Harvard and Edinburgh universities have discovered that a brain circuit known as melanoncortin 4 receptor-regulated MC4R is a group of cells that control the sensation of wanting to eat. By closing it in a group of experimental rats, hunger increased, and by opening it, the bouts of hunger stopped. The scientists indicated that they were able to activate and stop brain cells by exposing mice to blue laser light through optical fibers implanted in the animals' brains. The research has been published in the journal Nature Neuroscience