Alcohol effects on human brain

Essay by nomercy95 November 2014

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Alcohol effect on the human brain

One drink is usually defined as one beer or one wine cooler or 1.5 ounces of shot of 80 proof distilled sprite. Many people don't stop at one drink or two, they keep on drinking until they aren't themselves anymore. They start the stumbling walk, slurred words and memory lapses. This is sign of heavy drinking. People who drink have trouble with their judgment, balance and coordination. Consuming alcohol makes a person react slowly in any given circumstances, therefore driving and operating any machine is dangerous once consumed lot of alcohol. All of these backlogs occur because the way alcohol affects the human nervous system and the brain. There are short-term effects and long-term effects of alcohol and also it impacts according to age group.

Alcohol impacts the brain chemistry by changing levels of neurotransmitters. Chemical messengers that transmit the signals throughout the body that control thought processes, behavior and emotion are called Neurotransmitters.

Neurotransmitters are either excitatory, which means that they increase brain electrical activity, or inhibitory, meaning that they reduce brain electrical activity. Alcohol increases the effects of the inhibitory neurotransmitter GABA in the brain. This causes the hard to understand speech and stagnant movements that usually happen when consuming alcohol. At the same time, alcohol affects the excitatory neurotransmitter glutamate. Affecting this part of the brain has similar type of physiological slowdown outcome. In addition to increasing the GABA and decreasing the glutamate in the brain, alcohol increases the amount of the chemical dopamine in the brain, which gives one the pleasure feeling after taking a drink. Alcohol impacts different parts of the brain in different ways. There are 4 main parts of the brain: the cerebral cortex, cerebellum, hypothalamus and the medulla. The cerebellum, in this part of the brain...