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Chapters

0:00 Introduction
0;42 short term effects of alcohol
1:56 long term effects of alcohol
2;36 physical long term effects of alcohol






Alcohol (also known as ethanol) has a number of effects on health. Shortterm effects of alcohol consumption include intoxication and dehydration. Longterm effects of alcohol include changes in the metabolism of the liver and brain, several types of cancer and alcohol use disorder. Alcohol intoxication affects the brain, causing slurred speech, clumsiness, and delayed reflexes. Alcohol stimulates insulin production, which speeds up glucose metabolism and can result in low blood sugar, causing irritability and possibly death for diabetics.[1][medical citation needed] There is an increased risk of developing an alcohol use disorder for teenagers while their brain is still developing.[2] Adolescents who drink have a higher probability of injury including death.[2]

Even light and moderate alcohol consumption have negative effects on health,[3][4][5] such as by increasing a person's risk of developing several cancers.[6][7] A 2014 World Health Organization report found that harmful alcohol consumption caused about 3.3 million deaths annually worldwide.[8] Negative effects are related to the amount consumed with no safe lower limit seen.[9] Some nations have introduced alcohol packaging warning messages that inform consumers about alcohol and cancer, as well as fetal alcohol syndrome.[10]

The median lethal dose of alcohol in test animals is a blood alcohol content of 0.45%. This is about six times the level of ordinary intoxication (0.08%), but vomiting or unconsciousness may occur much sooner in people who have a low tolerance for alcohol.[11] The high tolerance of chronic heavy drinkers may allow some of them to remain conscious at levels above 0.40%, although serious health hazards are incurred at this level.

Alcohol also limits the production of vasopressin (antidiuretic hormone) from the hypothalamus and the secretion of this hormone from the posterior pituitary gland. This is what causes severe dehydration when alcohol is consumed in large amounts. It also causes a high concentration of water in the urine and vomit, and the intense thirst that goes along with a hangover.