Marijuana Smokers Process Emotional Information Differently In The Amygdala

Marijuana refers to the dried leaves, flowers, stems and seeds from the hemp plant Cannabis sativa. It contains the psychoactive which results in mind-altering chemical called the delta-9-tetrahydrocannabinol (THC), and other compounds related to it. Marijuana is the most common illicit drug used all over the world especially in the United States. Its use had declined for close to a decade and then became very common as from 2007 as the effects associated with it are becoming more diminished. Marijuana is usually smoked in hand-rolled cigarettes called joints or smoked in blunts-cigars that have been emptied off tobacco. The smoke has a pungent smell usually sweet-and-sour, odor. It can also be mixed in foods and drinks.

When marijuana is smoked the THC is rapidly passed from the lungs into the bloodstream, which carries the substance to the brain. When it is ingested in foods and drinks, this process is much slower. According to the Institute of Medicine published in Mar 1999 report titled “Marijuana and Medicine: assessing the Science Base”: the THC enters the brain, it causes the user to feel euphoric (high) by acting on the brain’s reward system which consists of regions that are responsible for governing pleasurable things like sex and chocolate as well as to most drugs of abuse. THC activates this receptors of the brain by simulating brain cells to release the chemical dopamine.

Marijuana

The users describe two stages of feeling high after intake of marijuana: initial simulation (giddiness and euphoria), followed by sedation and a pleasant tranquility. Their also reported altered perceptions of time and distance as well as heightened sensitivity to sights and sounds. Relaxation is also another frequently reported effect in users of marijuana. They tend to become more relaxed and there is a feeling of bliss and contentment. Their appetite is also greatly improved. After a while, this effects subsidized and the user may feel sleepy or depressed. On rare occasions, marijuana use may produce anxiety, fear, distrust or panic. Users may get very paranoid and anxious until the euphoria reduces.

Marijuana also affects brain development, and when it is used heavily by young people, its effects on their memory and thinking capacity may last a long time or even be permanent. According to a recent study of marijuana users, those who started using at a very young age showed greatly reduced connectivity among brain areas responsible for learning and memory. Those who started smoking heavily in their teens have lost an average of 8 points in IQ between the age 13 and 38, according to a study in New Zealand. Those who started smoking marijuana in their adulthood did not show fairly large declines in their IQ. Marijuana also impairs a person’s ability to form new memories and to shift focus. The substance THC disrupts a person’s coordination and balance by binding to the receptors in the cerebellum and basal ganglia responsible for regulating balance, posture, coordination, and reaction time.

Large intakes of marijuana makes users have acute psychosis, which is basically hallucinations, delusions, and a loss of the sense of identity. Marijuana users are very much likely to end up depressed, anxious and generally their loose the will to live and become suicidal as well as personality disturbances. One of the controversies on the same is the amotivational syndrome, defined as a diminished or absence of the drive to take part in any rewarding activity. As a result of the endocannabinoid system regulating mood, these associations make a certain amount of sense; however, this research is yet to be completed to help us better understand how marijuana use is connected to mental illness in the future. This research also shows that, individuals with one or two copies of the Val variant have a higher risk of developing schizophrenic-type disorders if they used marijuana during adolescence.

Marijuana use during pregnancy is associated with increased neurobehavioral problems in baby after birth. The baby’s endocannabinoid chemicals are mimicked by the marijuana THC and other compounds. This in result causes poor development of the endocannabinoid system in the brain of the fetus. This will in future result in poor memory, problems in attention and problem solving hence they become very slow in responding to their surrounding stimuli. THC exposure also disrupts synapses which help connect nerve cells and allow for the efficient transfer of neurotransmitters. The child is also likely to develop more psychiatric illnesses such as depression, anxiety, attention-deficit disorder, and schizophrenia.

Marijuana

Marijuana use for a long time causes the brain to continually make the user crave for the same as one tends to get addicted. The development of the frontal cortex is affected and as a result affect a person’s reward system leading to prolonged addiction, and ultimately affects one’s decision making. This addicts are more likely to get impaired executive function and a proclivity to choose the easier task. This may be seen in the user taking part in criminal activities and engaging in violence.

Research has shown that heavy marijuana users tend to have more problems in their daily life or it makes their existing problems worse. They report lower life satisfaction, poorer mental and physical health, more relationship problems, and they also have less academic and career success compared to non-marijuana users. They tend to drop out of school more, they are the highest number of the absentees in their places of work and also are likely to get into accidents more. They have poor coordination. Marijuana users who have become addicted should seek help in rehabilitation centers. As of late, more research is being carried out to determine more effects of marijuana in the brain. It has also been introduced in the medical field as it is given to cancer patients to increase their appetite and to reduce pain.