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Any alcohol use raises dementia risk, with no safe level found, according to a major study.
A major international study published in BMJ Evidence-Based Medicine finds that any alcohol consumption increases dementia risk, with no safe level identified.
Analyzing data from over 559,000 people in the U.S. and U.K. and genetic information from more than 2.4 million individuals, researchers found that even light drinking raises risk, which rises with greater intake.
Genetic evidence supports a causal link, showing higher dementia risk with increased alcohol use and alcohol use disorder genes.
Brain imaging reveals alcohol-related damage beyond memory centers, including the thalamus and cerebellum, though some recovery is possible after stopping drinking.
The findings challenge previous beliefs about moderate drinking being protective and suggest reducing alcohol use could be key to preventing dementia.
Cualquier uso de alcohol aumenta el riesgo de demencia, sin que se encuentre un nivel seguro, según un estudio importante.