The effects of alcohol on the brain are dependent on age and daily consumption habits, says Dr. Willeumier.
Alcohol consumption only exacerbates symptoms of brain aging.
Alcohol consumption has an added impact on the aging brain, particularly in these regions essential to cognitive function.

How much you drink impacts the extent to which alcohol affects your brain.
Moderate-to-heavy alcohol consumption, four or more drinks per day, is detrimental to brain function, she says.
Ethanol can have a neurotoxic effect on the brain, leading to structural and functional brain damage.

neuroscientist and author ofBiohack Your Brain
Heavy alcohol use is associated with an increased risk of dementia.
Therefore, early detection and intervention in heavy alcohol users are essential in the prevention of dementia.
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