Essay Drugs Cause Addiction By Affecting The Brain
Drug addiction is a chronic illness that affects the brain. It develops when a person is no longer able to live normally without taking a particular drug. Drugs that people abuse often include alcohol, cocaine, nicotine, opiate, marijuana, ketamine, amphetamine, hallucinogen and heroine. Each of these drugs affects the reward system of the brain.
How people become addicted to drugs
People become addicted to drugs when doing either of these things.
1. Numbing and reducing pain – Some people take drugs to numb pain. Opiates are good examples of drugs that are medically used to treat pain; however, they are so addictive. Opiates provoke opiate receptors in different sections of the brain, including nucleus accumbens and cerebral cortex. This triggers release of large quantities of dopamine, a neurotransmitter that triggers euphoria and ecstasy. Opiates also cause the brain to produce more endorphins to completely eliminate the pain. If the pain disappears totally, allowing the person to relax, their risk of taking more doses of opiates will increase. And this will cause addiction. Ketamines and PCP happen to be anesthetic drugs too, and they are seriously addictive.
2. Taking drugs for a recreational purpose – People who live with stress, depression and anxiety are in danger of using hard drugs to get high and intoxicated. As well, young people may become hooked on drugs because of peer pressure or lack of enough…