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Cognitive decline associated with as few as 4 alcoholic drinks a week

A UK Biobank study of almost 21,000 people has found lower cognitive ability from drinking due to iron accumulation in the brain.

@AdamHuntTT
Published Jul 16, 2022 12:32 AM CDT   |   Updated Tue, Aug 9 2022 1:34 AM CDT

A study on cognitive decline and alcohol titled "Associations between moderate alcohol consumption, brain iron, and cognition in UK Biobank participants: Observational and mendelian randomization analyses" has been published in the journal PLoS Medicine.

Cognitive decline associated with as few as 4 alcoholic drinks a week 01 | TweakTown.com

Researchers from the University of Oxford analyzed 20,965 participants in the UK Biobank, all of whom self-reported their alcohol consumption and had their brains scanned using magnetic resonance imaging (MRI). The team found that consuming seven or more standard drinks of alcohol weekly was associated with higher iron levels in the brain. In the United Kingdom, a standard drink refers to 8 grams of pure ethanol, while a standard drink in the United States is 14 grams.

Higher alcohol consumption was associated with higher concentrations of iron in the basal ganglia, a group of brain regions responsible for controlling "motor movements, procedural learning, eye movement, cognition, emotion, and more." Higher iron levels in these regions were, in turn, associated with poorer cognitive function.

"In the largest study to date, we found drinking greater than 7 units of alcohol weekly associated with iron accumulation in the brain. Higher brain iron in turn linked to poorer cognitive performance. Iron accumulation could underlie alcohol-related cognitive decline," said Anya Topiwala of the University of Oxford, United Kingdom.

You can read more from the study here.

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Adam grew up watching his dad play Turok 2 and Age of Empires on a PC in his computer room, and learned a love for video games through him. Adam was always working with computers, which helped build his natural affinity for working with them, leading to him building his own at 14, after taking apart and tinkering with other old computers and tech lying around. Adam has always been very interested in STEM subjects, and is always trying to learn more about the world and the way it works.

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