Drug addiction is caused by a combination of factors, including both physical and psychological elements. Physically, drugs can alter brain chemistry, leading to changes in behavior and thought processes that make it difficult for a person to quit using them even if they want to.
Psychologically, drugs can produce powerful feelings of pleasure or relief that can be incredibly difficult for an individual to resist.
Over time, this creates a cycle of dependency where an individual feels they need to take drugs in order to feel “normal” or deal with stressors of life.
As well, biological factors can play a part in drug addiction. These include genetic predisposition, which makes some people more susceptible to drugs than others. Environmental factors add into the equation as well – such as peer pressure or access to drugs which also play a role in determining whether someone will become addicted. Psychological factors, too, can also contribute to drug addiction, such as trauma or depression.