Food Intake and Energy Regulation

Abstract

In the regulation of energy intake, hypothalamus, gastrointestinal tract, white and brown adipose tissue and muscle play a role. Sustaining energy balance is provided by a complex and dynamic process. Some genetic and hormonal factors are effective in human eating behavior. In recent years, it has been reported that gastrointestinal (GI) peptide species, such as peptide YY (PYY), ghrelin, glucagon like peptide-1 (GLP-1) and cholecystokinin (CCK) occurs signals of satiety and these lead the control of food intake. Therefore, the data of that these hormones’ potential fluctuation have an effect on changes of eating behaviour or appetite is not clear in obesity. Besides, whether these peptides are effective in the protection and loss of body weight is still unknown.