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Alcohol consumption and cognitive decline in early old age.

Abstract : To examine the association between alcohol consumption in midlife and subsequent cognitive decline. Data are from 5,054 men and 2,099 women from the Whitehall II cohort study with a mean age of 56 years (range 44-69 years) at first cognitive assessment. Alcohol consumption was assessed 3 times in the 10 years preceding the first cognitive assessment (1997-1999). Cognitive tests were repeated in 2002-2004 and 2007-2009. The cognitive test battery included 4 tests assessing memory and executive function; a global cognitive score summarized performances across these tests. Linear mixed models were used to assess the association between alcohol consumption and cognitive decline, expressed as z scores (mean = 0, SD = 1). In men, there were no differences in cognitive decline among alcohol abstainers, quitters, and light or moderate alcohol drinkers (<20 g/d). However, alcohol consumption ≥36 g/d was associated with faster decline in all cognitive domains compared with consumption between 0.1 and 19.9 g/d: mean difference (95% confidence interval) in 10-year decline in the global cognitive score = -0.10 (-0.16, -0.04), executive function = -0.06 (-0.12, 0.00), and memory = -0.16 (-0.26, -0.05). In women, compared with those drinking 0.1 to 9.9 g/d of alcohol, 10-year abstainers showed faster decline in the global cognitive score (-0.21 [-0.37, -0.04]) and executive function (-0.17 [-0.32, -0.01]). Excessive alcohol consumption in men (≥36 g/d) was associated with faster cognitive decline compared with light to moderate alcohol consumption.
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https://www.hal.inserm.fr/inserm-01148010
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Séverine Sabia, Alexis Elbaz, Annie Britton, Steven Bell, Aline Dugravot, et al.. Alcohol consumption and cognitive decline in early old age.. Neurology, American Academy of Neurology, 2014, 82 (4), pp.332-9. ⟨10.1212/WNL.0000000000000063⟩. ⟨inserm-01148010⟩

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