Studies show that even a little excess body weight dramatically raises the risk of suffering - and dying early - from a wide range of age-related conditions. Cancer, diabetes, Alzheimer's, heart disease, and many others are on this list. Being overweight will shorten your life span, make you less healthy, and drain your wallet through medical expenses. With that in mind, Betterhumans reports on new research into the biochemical cause of obesity. It seems that too much fat in the bloodstream blocks an important signalling process that tells the brain to stop eating. Medications that could address this problem already exist, so you may be hearing more about this research before too long.