Drinking recommended amounts of alcohol causes more harm to adolescents than to adults
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Retrieved medical and scientific literature demonstrates that the developing adolescent brain is uniquely vulnerable to the toxic and neurobiological effects of alcohol, placing adolescents at a heightened risk of harm compared to adults.
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
Alcohol (also known as ethanol) has a number of effects on health. Short-term effects of alcohol consumption include intoxication and dehydration. Long-term effects of alcohol include changes in the metabolism of the liver and brain, with increased risk of several types of cancer and alcohol use disorder. Alcohol intoxication affects the brain, causing slurred speech, clumsiness, and delayed refle
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A systematic analysis of data from the Global Burden of Disease Study, which was an observational study, found that long-term consumption of any amount of alcohol is associated with an increased risk of death in all people, and that even moderate consumption appears to be risky. Similar to prior analyses, it found an apparent benefit for older women in reducing the risks of death from ischemic heart disease and from diabetes mellitus, but unlike prior studies it found those risks cancelled by an apparent increased risk of death from breast cancer and other causes. A 2016 systematic review and meta-analysis found that moderate ethanol consumption brought no mortality benefit compared with lifetime abstention from ethanol consumption. Risk is greater in younger people due to heavy episodic drinking which may result in violence or accidents.
Long-term heavy use of alcohol damages nearly every organ and system in the body. Risks include alcohol use disorder, malnutrition, chronic pancreatitis, alcoholic liver disease (e.g., permanent liver scarring) and several types of cancer. In addition, damage to the central nervous system and peripheral nervous system (e.g., painful peripheral neuropathy) can occur from chronic alcohol misuse.
The developing adolescent brain is particularly vulnerable to the toxic effects of alcohol.
A systematic analysis found in 2022 that the level of alcohol consumption recommended by many existin
Alcohol (also known as ethanol) has a number of effects on health. Short-term effects of alcohol consumption include intoxication and dehydration. Long-term effects of alcohol include changes in the metabolism of the liver and brain, with increased risk of several types of cancer and alcohol use disorder. Alcohol intoxication affects the brain, causing slurred speech, clumsiness, and delayed reflexes. There is an increased risk of developing an alcohol use disorder for teenagers while their brain is still developing. Adolescents who drink have a higher probability of injury including death.
Light alcohol consumption was misclassified as possibly healthy in the past by several studies, but evidence shows that even minimal to light alcohol consumption can have negative effects on health, such as by increasing a person's risk of developing several cancers. A 2014 World Health Organization (WHO) report found that harmful alcohol consumption caused about 3.3 million deaths annually worldwide. Negative effects are related to the amount consumed with no safe lower limit seen. Some nations have introduced alcohol packaging warning messages that inform consumers about alcohol and cancer, as well as fetal alcohol syndrome. In modern medicine, the only possible beneficial uses of alcohol are as a topical disinfectant, temporary emergency cure for alcohol withdrawal syndrome, and, as long as kept in strict moderation, positive social effects outweighing harm to the body. Practically no authorities recommend starting drinking for any positive effects.
In January 2025, the surgeon general of the United States released an advisory describing a causal relationship between alcohol consumption and increased risk of seven different types of cancer, including colorectal cancer, liver cancer, and throat cancer. The advisory recommended updating the health warning label on alcohol-containing beverages in the United States to include a warning about the risk of cancer from consuming these beverages.
A systematic analysis of data from the Global Burden of Disease Study, which was an observational study, found that long-term consumption of any amount of alcohol is associated with an increased risk of death in all people, and that even moderate consumption appears to be risky. Similar to prior analyses, it found an apparent benefit for older women in reducing the risks of death from ischemic heart disease and from diabetes mellitus, but unlike prior studies it found those risks cancelled by an apparent increased risk of death from breast cancer and other causes. A 2016 systematic review and meta-analysis found that moderate ethanol consumption brought no mortality benefit compared with lifetime abstention from ethanol consumption. Risk is greater in younger people due to heavy episodic drinking which may result in violence or accidents.
Long-term heavy use of alcohol damages nearly every organ and system in the body. Risks include alcohol use disorder, malnutrition, chronic pancreatitis, alcoholic liver disease (e.g., permanent liver scarring) and several types of cancer. In addition, damage to the central nervous system and peripheral nervous system (e.g., painful peripheral neuropathy) can occur from chronic alcohol misuse.
The developing adolescent brain is particularly vulnerable to the toxic effects of alcohol.
A systematic analysis found in 2022 that the level of alcohol consumption recommended by many existing guidelines is too high in particular for young people in all regions.
Medical organizations strongly discourage drinking alcohol during pregnancy. Alcohol passes easily from the mother's bloodstream through the placenta and into the bloodstream of the fetus, which interferes with brain and organ development. Alcohol can affect the fetus at any stage during pregnancy, but the level of risk depends on the amount and frequency of alcohol consumed. Regular heavy drinking and heavy episodic drinking (also called binge drinking), entailing
And although adolescents tend to drink alcohol less often than adults, they tend to drink more when they do drink. See Facts and Statistics on Underage Drinking for more information. Relationship Among Adolescent Risk-Taking, Brain Plasticity, and Drinking Adolescents are motivated to explore and take risks. These learning experiences, complemented by the adolescent brain’s increased ability to readily change in response to experiences (also known as brain plasticity ), are key to developing the skills and knowledge to become independent.
Drinking Levels Defined Binge Drinking: The National Institute on Alcohol Abuse and Alcoholism (NIAAA) defines binge drinking as a pattern of drinking alcohol that brings blood alcohol concentration (BAC) to 0.08%—or 0.08 grams of alcohol per deciliter—or higher. For a typical adult, this pattern corresponds to consuming five or more drinks (male), or four or more drinks (female), in about two hours. However, research shows that fewer drinks in the same time frame are necessary to reach the same BAC in adolescents (compared to adults): only three drinks for adolescent females and three to five drinks for adolescent males, depending on their age and size.
Meanwhile, the areas of the brain involved in planning and decision-making (the prefrontal cortex) are the last areas to mature, typically at least into the mid-20s. 2 Scientists have found that alcohol causes less sedation (sleepiness) and smaller impairments in balance and muscle coordination in adolescent rodents than adult rodents. 1 If this research holds true for humans, it could put adolescents at even greater risk of harm from alcohol by allowing them to continue drinking and reach higher blood alcohol levels despite impairments in decision-making and impulse control.
Link Between Childhood Trauma and Later Alcohol Misuse Research suggests that youth who have experienced childhood trauma may have disrupted growth in brain regions, and patterns of connections between brain regions, that may make them more likely to engage in binge drinking during adolescence. 8,13 Immediate Effects of Alcohol on the Brain and Behavior In adults, drinking alcohol impairs decision-making and impulse control, and can lead to a range of negative consequences. For adolescents, drinking alcohol can make it even more difficult to control impulses and make healthy choices.
In both adolescents and adults, drinking also compromises the ability to sense danger by disrupting the function of a brain region called the amygdala. Alcohol often produces rewarding feelings such as euphoria or pleasure that trick the brain into thinking the decision to drink alcohol was a positive one and that motivate drinking again in the future. If a person drinks enough, particularly if they do so quickly, alcohol can produce a blackout. Alcohol-induced blackouts are gaps in a person’s memory for events that occurred while they were intoxicated.
These gaps happen because alcohol temporarily blocks the transfer of memories from short-term to long-term storage—a process known as memory consolidation—in a brain area called the hippocampus. Alcohol-related blackouts are quite common among adolescents. In one study, one in five older adolescents who ever drank alcohol reported an alcohol-induced blackout in the previous six months. 3 Even a small amount of alcohol can cause subtle memory impairment while a person is drinking. The more alcohol a person consumes, the more significant the memory impairment.
Alcohol-induced blackouts as predictors of other drinking related harms among emerging young adults. Alcohol Clin Exp Res. 2016;40(4):776-84. PubMed PMID: 27012148 4 White AM. What happened? Alcohol, memory blackouts, and the brain. Alcohol Res Health. 2003;27(2):186-96. PubMed PMID: 15303630 5 Jennison KM. The short-term effects and unintended long-term consequences of binge drinking in college: a 10-year follow-up study. Am J Drug Alcohol Abuse. 2004;30(3):659–84. PubMed PMID:
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