The problem of obesity, anorexia, being fat and being too lean all relate to balance of hormones in the body.
Ghrelin is a key player
Who sends the signal to the brain "Eat"
Leptin is 2nd key player
Who sends the signal to the brain " Stop Eating"
Obesity is the result of abnormal function of leptin in the body.
And we cannot control our hunger !!!
Leptin therapy is widely used to treat obesity.
Source of image (www.eatthis.com)