I don't think anyone is designed to overeat, they simply choose to do so. People develop it as an habit, maybe it was not controlled while growing up. But overeating certainly have side effect. Normally, your eating habit should be normal to help you grow healthy. Anything other than that has a repacusion.
Anyone saying he was designed to overeat is only looking for a way to hide his bad habit. Not realizing that overeating is bad and dangerous will cause a lot of damage to one's health.
You can also participate by clicking here