Changes in the brain that support physical and psychological dependency on mind-altering substances are the direct cause of addiction, but those changes do not occur at random. Addiction experts believe drug addiction emerges from an interplay of genetic and environmental factors, although one factor or the other may be strong enough to make a person vulnerable to addiction in some instances.
People who misuse alcohol are often addicted to the act of drinking, as much as the alcohol itself. For that reason, you may need to learn skills and coping mechanisms to help you avoid alcohol once you leave a treatment center or return to familiar environments where the urge to drink may be stronger. Your doctor may refer you to a counselor or other treatment program to help you learn those skills and coping strategies. Inpatient Drug Rehab - What To Expect
According to NIDA, genetic factors are responsible for 40 to 60 percent of a person’s vulnerability to drug addiction. Studies show that a person’s predisposition to drug addiction positively correlates to their degree of genetic similarity to a relative who has a history of drug dependence or addiction. Mental disorders and medical conditions are also risk factors.
Stimulants, such as tobacco, cocaine or prescription amphetamines, stimulate the brain and nervous system, causing increased alertness. Depressants, such as barbiturates and benzodiazepines, slow activity in the brain and nervous system, causing relaxation. Hallucinogens, such as LSD and PCP, drastically disrupt the way the brain and nervous system communicate, causing hallucinations. Rehab: Last Week Tonight with John Oliver (HBO)