Cosmetic surgery is real surgery and there are real risks. It is important to consult with an experienced doctor, preferably one board-certified by the American Board of Plastic Surgery. By being board-certified that doctor has demonstrated a high level of proficiency and patient safety. There are indeed many medical reasons that would make cosmetic surgery risky--uncontrolled high blood pressure or diabetes, heart disease, blood clotting disorders, obesity, sleep apnea, lung problems, psychological disorders, etc. to name a few. In addition to an evaluation by a surgeon, most patients will have some pre-operative medical exam by a primary care doctor to make sure any medical conditions are optimized prior to surgery.