Obesity has been described as the greatest current threat to human health. In order
            to design drugs to target obesity, it is essential to understand its physiology and
            pathophysiology. Several peptides synthesised in the gastrointestinal tract which
            affect food intake have been identified including ghrelin, cholecystokinin (CCK),
            glucagon-like peptide-1 (7 - 36) amide (GLP-1), oxyntomodulin, peptide YY (PYY) and
            pancreatic polypeptide (PP). These peptides represent potential targets for the design
            of anti-obesity drugs. In this article we review recent advances in our understanding
            of food intake by these gastrointestinal hormones.
         
         
         
            Ghrelin - Cholecystokinin (cck) - Glucagon-like peptide-1 (7 - 36) amide (glp-1) -
               Oxyntomodulin - Peptide YY (pyy) - Pancreatic polypeptide (pp) - Obesity