My Aunt's Weight

Unfortunately, my aunt is heavy weight. I'm not sure if diet pills will work for her since she is not watching her food intake or her general diet. The way she eats is like there's no tomorrow. I tried to advise her many times but she just ignored me. I'm so worried about her weight though. I know that sooner or later she will develop different illnesses. I'm hoping that very soon she will make up her mind that I am right and do the right thing. Did someone say Atkins?