Brother cant stop eating?

Maybe when your mom's kemo (srry to hear about that, btw) is finished, the family can sit down and discuss a family lifestyle change as far as diet and exercise. Everyone can motivate one another to get healthy before anyone else developes problems. Obesity can lead to asthma, diabetes, heart disease, as well as raises risks for certain cancers. This should be a family effort for a healthy and longer life. Best wishes for your mother's and everyone else's health concerns.