Marijuana is a drug that can be smoked, eaten or drunk. Although it is used occasionally for medically-prescribed or other legal uses, the vast majority is obtained and consumed illegally. The National Institute on Drug Abuse lists marijuana--also known as pot--as the most widely abused drug in the United States. THC, the active component in marijuana, has many short-term and long-term adverse effects. If you are addicted to marijuana or other drugs, help is available.
Mental Effects
Marijuana produces many effects on the brain. It distorts visual perception and impairs coordination, making driving unsafe. Reaction times are slowed and paranoia may cause the user to believe others are out to get him. Sleepiness or lack of energy is another common effect. Problem-solving becomes difficult and the ability to memorize is significantly impaired. Long-term use can lead to impairments in learning and retention. Daily users may eventually lose interest in family, friends, job, education and hobbies as the drug dominates their lives. The National Institute on Drug Abuse has indicated that long-term marijuana users are at increased risk of schizophrenia, depression, anxiety and contemplation of suicide.
Respiratory Effects
Marijuana causes coughs and increases phlegm production. The smoke contains carcinogens and lung irritants. Users have more respiratory problems than non-users and increased odds of lung infection. The tar in pot smoke is harmful to the lungs.
Other Physical Effects
Marijuana use increases the risk of a heart attack. It raises the heart rate and can cause palpitations--sensations of the heart pounding in the chest. The heart may begin to beat in an abnormal or dangerous rhythm. The American Academy of Family Physicians describes other effects, including headaches, nausea, tremors and changes to the sex organs.
Addictive Effects
It is possible to become physically dependent on marijuana. The user may need larger amounts to get the same "high" over time, increasing her exposure to the adverse effects. This dependency can lead to legal problems as users seek more drugs to meet their dependency. People who attempt to quit using pot may experience cravings, insomnia and anxiety.
