Obesity is one of the most serious public health problems of the 21st century, increasing prevalence in adults and children 1]. The central nervous system (CNS) 2] has developed an interconnected circuitry to keep us fed and in an sufficient nutritional state. One of these results is that an energy-dense environment favors the development of obesity. Neuropeptide Y (NPY) is a 36 amino acid peptide which is widely distributed in both the central nervous system and in peripheral neurones and has a range of biological actions such as control of food intake and body weight. In recent year,...