If you are not familiar with the term drug addiction, it means to abuse or take an illegal substance in the process of engaging in a substance use or substance addiction. It is a very dangerous habit and people addicted to substances generally engage in dangerous behaviors such as stealing, robbery, violence and abuse drugs. While it is true that drugs cause various physical disorders, many addicts do not understand the dangerous consequences of these drugs and become addicted to them in the first place. Now that the term has been defined, let us get into a list of what drug addiction studies are all about. Drug addiction studies are usually conducted by different groups of people with various backgrounds. The most common group of people who conduct drug addiction studies are psychologists, psychiatrists, nurses, social workers, educators and drug rehabilitation specialists. The main purpose of this type of study is to examine the causes and the consequences of drug abuse and addiction. They conduct surveys and interviews on different people involved in the substance abuse problem and conduct focus groups with them to try to understand the issues involved. This is usually done so that they will know what type of help is required in order to help their patients get back to a normal life. Another group of people who conduct different drug addiction studies are pharmacists, doctors and therapists. These people understand the various reasons why an addict becomes addicted to a certain substance and why it may lead to more serious consequences in the future. This is a good thing because it means that they can take preventive measures so that their patients do not have to face the problems that they face in the future. Many different types of substance abuse treatment programs exist but there are few that are highly effective. Some of these include Alcoholics Anonymous, Narcotics Anonymous and 12-Step programs. They provide help to people addicted to various substances by teaching them how to use alcohol and drugs in a proper manner and at a low cost.