Peter Attia· MD
and it centers around a chemical called erectin now in the middle of your brain and all of our brains is a tiny structure called the hypothalamus and despite its size it has profound effects on almost all of our behaviors it's fundamental for regulating things like our feeding behavior our sleep wake regulation it's fundamental for thermoregulation and within the hypothalamus there is a cluster of cells called erectin cells those erectin cells one of their functions is to actually monitor the body's energy balance and the way that they do this is by sensing among other things concentrations of circulating levels of leptin and ghrelin which are two appetite regulating hormones i believe they also sense glucose so they essentially get a map of the body's energy balance