Part 1 of Essay
Drug abuse is commonly defined as the harmful, non-medical use of a mind-altering drug. The constant misuse of such drugs can lead to poor health and to personality and behavioral problems. Some people use the term drug abuse of refer only to problems with illegal drugs. Other people include the harmful use of illegal d ....

Part 2 of Essay
.... drug becomes a habit that is hard to break. Drug dependence is both psychological and physical. Psychological dependence involves a craving for the psychological experience a drug provides. Physical dependence means that the user builds a tolerance to the drug. When this happens the user needs more and more of the drug to achieve the same effect. If a person develops this type of tolerance and then stops using the drug he/she will suffer from drug withdrawal. The body then needs the drug so badly that the ....