How Do Drugs Affect The Brain

To understand addiction further, it is important to look at how drugs have neurological effects in a human body. Drugs can be ingested in various ways; while some are taken orally, some are smoked (cannabis) while others are injected directly into the blood stream (Heroin). Once in the body, they mainly affect the reward pathway in the brain, known as the dopaminergic pathway, which in turn gives pleasure. Even though all drugs affect the reward and motivation pathways in the brain, their speed depends on the way the drug has been consumed. Over constant use of drugs, the cognitive functions are impaired as the effects become more prominent in learning, memory

Other drugs, such as amphetamine or cocaine, can cause the neurons to release abnormally large amounts of natural neurotransmitters or prevent the normal recycling of these brain chemicals. This disruption produces a greatly amplified message, ultimately disrupting communication channels.

The body, through tolerance, becomes accustomed to the effects of the drug causing a change in the functioning of the reward center in the brain. Neurotransmitters in the brain, at this point, do not function normally and the body “needs” the drug to achieve balance within the system.

Drugs are chemicals they work in the brain by tapping into the brain's communication system and interfering with the way nerve cells normally send, receive, and process information. Some drugs, such as marijuana and heroin, can activate neurons because their chemical structure mimics that of a natural neurotransmitter. This fools receptors and allows the drugs to lock onto and activate the nerve cells. Although these drugs mimic brain chemicals, they don't activate nerve cells in the same way as a natural neurotransmitter, and they lead to abnormal messages being transmitted through the network.

the brain, flooding it with the neurotransmitter dopamine. This produces euphoria, and the heightened pleasure can be so compelling that the brain wants that feeling back again and again. Unfortunately, with repeated use of a drug, the brain becomes accustomed to the dopamine surges by producing less of it. So the user has to take more of the drug to feel the same pleasure — the phenomenon known as tolerance.

In today’s session, group members received education on how alcohol and drug abuse affects the brain chemistry. Group members learned how different categories of substances and how they act in the mind and body.

Drugs are addictive because, the drugs cause a ..."long-lasting chemical change in the brain." Without a dose of drugs, the brain has low chemical levels and the drug user is suffering a crave to "refill" the chemical levels. The drug abuser feels "...flat, lifeless and depressed." if they don't get another dose, so they take another dose to fulfill their emptiness and feel better. In summary, drugs are addictive for many reasons, and users crave drugs to fulfill needs.

Drugs have been around for a very long time. They are used for a variety of reasons. Some of these reasons include relaxation, socialization, curiosity, stress relief, or a form of escapism. However, most people don’t know the threats and danger that it can cause to the body. In this paper, we are going to examine the changes that happen inside the brain due to the effects of different drugs. We will look closely at how drugs such as hallucinogens, ecstasy, cocaine, heroin, and cannabis affect an individual psychologically. I will explain the origin of the drugs, how a person feels while on the drug, how the drugs

Many psychiatric and psychoactive drugs that are available on the market, pharmaceutically or illegally, closely resemble neurotransmitters and are actually able to mimic it to the extent that it fools the receptors. Basically, these drugs hijack the neurotransmitters. Once these drugs are ingested, it enters into the brain, gets into the synapse and binds itself to the receptor. This then causes the inappropriate release of neurotransmitters and alter the breakdown and recycling of neurotransmitters or can be used to destroy particular neurotransmitters completely (Sapolsky, 2005, p. 14).

Have you ever wondered how important your brain is? Your brain is what makes you who you are. This three pound ball of grey and white matter that sits in your skull allows you to breathe, move, speak, and feel. Every thing that happens to your body will make its way through your brain, which receives and processes everything.

The use of drugs have a huge effect on the brain. Drugs have an ever bigger effect on the lives of the people who partake in them. The use of drugs can hinder the way the brain is meant to function. Cocaine for instence can block the communication of the brain. Neurotransmission involves a variety of chemical substances called neurotransmitters. One neurotransmitter is called a dopamine and this is how the brain communicates. Over time a persons ability to not take the drug becomes compromised. The brain begins to crave that certain drug over a while and it becomes harder and harder for that person to quit using it. When a person shoots, snorts, or even smokes drugs it gets all parts of the brain via bloodstream. Treatment is long and hard

Drugs of abuse, such as cocaine, ecstasy, heroin and cannabis, are of natural or synthetic origin, which can alter the emotional state, perception, body functioning and behaviour of an individual. Drugs are known to work in the brain by activating certain brain circuits via different mechanisms, and stimulate or inhibit different neurons in the pathway. However, due to the effects of each drug being different, a drug will affect either different pathways and neurons in the brain to that of another, or through a different process, i.e. direct or indirect activity. This essay will discuss the different mechanisms of action that cocaine, ecstasy, heroin and

Eventually that addiction leads to drug tolerance. Tolerance is when drug user takes more and more of their drug of choice in order to receive the same type of euphoria feeling they once felt with smaller quantities.

“The overstimulation of this reward system, which normally responds to natural behaviors linked to survival (eating, spending time with loved ones, etc.), produces euphoric effects in response to psychoactive drugs. This reaction sets in motion a reinforcing pattern that “teaches” people to repeat the rewarding behavior of abusing drugs ”(“Understanding Drug Abuse). Using addictive drugs floods the limbic brain with dopamine, taking it up to as much as five or ten times the normal level. A person with elevated dopamine levels now has a brain that begins to associate the substance with an outside neurochemical reward (“Your Brain on Drugs”). As a person continues to abuse drugs, the brain adapts to the overwhelming surges in dopamine by producing less dopamine or by reducing the number of dopamine receptors in the reward circuit. The result is a lessening of dopamine’s impact on the reward circuit, which reduces the abuser’s ability to enjoy the drugs, as well as the events in life that previously brought pleasure. The decrease in normal dopamine levels encourages the addict to keep abusing drugs in an attempt to bring the dopamine function back to normal, except now larger amounts of the drug are required to achieve the same dopamine high, an effect known as tolerance (“Understanding Drug Abuse ). That is what leads to the state of addiction, which leaves the person in a cycle of craving, using, withdrawal, and relapse.

Have you ever dealt with the effects of drug addict? A drug is a person who is addicted to drugs or alcohol, which has a psychological effect when ingested or otherwise introduced into the body. The effects of drug use can vary depending on the person. According to “Causes and types of narcotic addiction: A Psychosocial View” in the Psychiatric Quarterly it says, “The causes of drugs stem from the manner of which you were introduced to it whether it be by abnormal curiosity, chance encounters with addicts and narcotic peddlers, or prolonged illness” (Ausubel). The effects of drugs can be have different effects on everyone differently depending if its for pleasure or for relieving pain Most of the effects of drugs occur in the brain, where it increases the level of dopamine at a specific site possibly giving the addict the pleasure they were feigning for (Robbins). As a child I didn’t know much about drugs except for what your parents and teachers at school tell you which is, “Just Say No.”