Safe diet on hot peppers.

Patient: I want to start eating more peppers as I hear they have numerous benefits. I also hear that the more hotter peppers have more benefits. My question is what causes people to be hospitalized from the extremely hot peppers? I want to be able to eat them in a regular diet, but I want to know what puts these people in the hospital. Was it an allergic reaction, overreacting to the burning, etc?