Current clinical research suggests that marijuana use can have long-lasting effects on learning and memory, especially for users who start in adolescence, when the brain is still developing. Addiction Science & Clinical Practice states that approximately 9 percent of individuals who try marijuana become dependent on the drug, compared to 15 percent of cocaine users and 24 percent of heroin users. However, because marijuana is more readily available than these other illicit drugs, marijuana addiction has become more widespread, and marijuana detox programs have become more common.
Once you are free from drugs, you have the ability to think more clearly and can educate yourself about your addiction. Learning about your addiction means gaining insight into which people, events, sensory experiences and habits trigger cravings for drugs. Most drug rehab facilities can help you explore those triggers so that you can make deliberate efforts to avoid or manage them when you transition back into your daily life.
Alcoholism can also be categorized into 2 types: early-onset (biological predisposition to the disease) or late-onset (brought on by environmental or psychosocial triggers). Understanding and studying the difference between early- and late-onset alcoholism facilitate the selection of the appropriate therapy. Drugs that affect the rewarding behavior of neural activities, such as ondansetron, naltrexone, topiramate, and baclofen, have been shown to alter drinking behavior. 
While a trial period of controlled drinking with careful follow-up might be appropriate for a diagnosis of alcohol abuse, this approach increases a physician's professional liability. Complete abstinence is the only treatment for alcohol dependence. Emphasize that the most common error is underestimating the amount of help that will be needed to stop drinking. The differential diagnosis between alcohol abuse and dependence can be a difficult judgment call.
NOTE: This fact sheet discusses research findings on effective treatment approaches for drug abuse and addiction. If you’re seeking treatment, you can call the Substance Abuse and Mental Health Services Administration's (SAMHSA's) National Helpline at 1-800-662-HELP (1-800-662-4357) or go to www.findtreatment.samhsa.gov for information on hotlines, counseling services, or treatment options in your state.
Before entering a rehab facility, patients may have to undergo detox treatment. Detox is the process in which a patient rids his or her body of the addictive substance. From start to finish, this process varies in length, but often takes about a week. As part of a medical detox program, recovering patients will be monitored by doctors and nurses and given medications to manage withdrawal, when appropriate. Once a patient completes detox, he or she is ready for rehab.
A growing literature is demonstrating the importance of emotion regulation in the treatment of substance abuse. Considering that nicotine and other psychoactive substances such as cocaine activate similar psycho-pharmacological pathways, an emotion regulation approach may be applicable to a wide array of substance abuse. Proposed models of affect-driven tobacco use have focused on negative reinforcement as the primary driving force for addiction; according to such theories, tobacco is used because it helps one escape from the undesirable effects of nicotine withdrawal or other negative moods. Acceptance and commitment therapy (ACT), is showing evidence that it is effective in treating substance abuse, including the treatment of poly-substance abuse and cigarette smoking. Mindfulness programs that encourage patients to be aware of their own experiences in the present moment and of emotions that arise from thoughts, appear to prevent impulsive/compulsive responses. Research also indicates that mindfulness programs can reduce the consumption of substances such as alcohol, cocaine, amphetamines, marijuana, cigarettes and opiates.
Outpatient treatment is the next step down in a continuum of care. It is also a rehabilitation option for individuals whose addiction is less severe and doesn’t require inpatient treatment. Clients in this phase of rehab drug treatment visit the facility regularly, but do not stay overnight. This approach allows the individual to receive drug treatment while maintaining family and job responsibilities. Drug Addict Is Terrified When He Sees the Rehab Car | The Jeremy Kyle Show