People expect too much from the advancement in medical science to give us a healthy life as many of the diseases can be cured with medicine. People expect medicine to give them a healthy life by treating with medicine or surgery whenever they feel sick. It is right to consume medicine to cure your illness when you are sick but people tend to be over reliance on medical science. However, not all diseases can be cured by medicine and some disease can be prevented by oneself instead of taking medicine to provide a healthy living. For example, even the best drugs currently available cannot weed out HIV from all of its hiding places within the body, according to a new study of HIV patients in the United States. The discovery seems to confirm doctors' suspicions that once the virus gains a foothold, it can never be fully eradicated from the body. however, HIV can be prevented by having less risky sexual intercourse. Therefore, people expect too much and become over reliance on medical science to replace a healthy living but not all the illness can be cured through it.