In spite of what efforts to legalize and today's culture would lead you to believe, it is a verified and conclusive proven fact that marijuana is an addictive substance which may bring about both acute and long-term physical and psychological harm to users. Like other drugs, a person who has used marijuana for an extended period of time can become addicted to its effects and can experience withdrawal symptoms if they initially quit using marijuana. Users today have extremely high grade marijuana at their disposal which wasn't true 10-20 years ago, making it an even bigger problem.

Someone that uses marijuana on a regular basis is significantly changing the way the brain functions, hence the brain can't just automatically return to normal function as soon as the person ceases using marijuana, this may take time. People actually detox from marijuana, like every other drug, as the drug is eliminated from the body and the body readjusts to function without marijuana. So marijuana detox is usually a challenge for habitual users, because users will experience withdrawal symptoms that may be tough to endure. These symptoms might not be as physical as it is with heroin withdrawal as an example, but marijuana detox and withdrawal might cause severe depression and other mental symptoms for long-term users. This is why relapse is so common for many who try to quit using marijuana by themselves. Marijuana detox services can be found at drug detox and drug treatment programs in Lisbon to help individuals through this course of action so they don't relapse and can receive further rehab services after detox.