Drug addiction is one of the specific types of addiction. Therapists group the causes of drug addiction into four basic categories. These categories include psychological causes, biological causes, spiritual causes and socio-cultural causes. All the four categories are interrelated in most of the cases. In some manner, all the four categories contribute to the formation of drug addiction. For drug and alcohol rehabilitation, it is important to address the issues causing addiction. Let’s understand each category. Biological Causes These causes include the unique psychology and genetics of a person. The degree to which people like or dislike a substance differs. Some people enjoy a substance so much that they find it difficult to resist. On the other hand, others may not get similar enjoyment from that particular substance. The ability to use rational thinking to temper impulsive desires is a brain function and this function varies among different people. Some people a...