My 24 year old son will vomit after eating. I am not sure if this is because he is just waking up and eating too much or if there is a problem. He is a smoker and has complained of breathing difficulties also. He has had xrays taken with no negative results. I know he is not forcing himself to vomit...I have witnessed the occurences...he eats stands up and vomits a few minutes later. My father has emphysema and my grandfather passed away from it also. Are these symptoms?