Neuropeptide Y
In response to fasting or stress, neuropeptide Y (NPY) is a hormone produced by cells in the brain and nervous system that stimulates appetite while lowering energy expenditure. NPY is linked to obesity and weight gain because it may stimulate food intake.
It is activated in fat tissue and may lead to abdominal obesity and metabolic syndrome, a condition that raises the risk of chronic diseases. According to research, the processes that cause obesity in NPY may also cause an inflammatory response, worsening health issues even more. Although additional study is needed, some studies show that regular exercise may help lower NPY levels. And high fat, high sugar diets have been shown to raise NPY levels, so you should try reducing your sugar and fat intake.