Body mass index and cognitive function: Birth cohort effects in young men. (10th April 2015)

• Record Type: Journal Article
• Authors: Ehrenstein, Vera; Münster, Anna‐Marie Bloch; Milstein, Arnold; Adler, Nancy E.; Sørensen, Henrik Toft
• Is Part Of: Obesity. Volume 23:Number 5(2015:May)
• Page Start: 931
• Page End: 934
• Publication Date: 2015-04-10
• Subjects: Obesity -- Periodicals; 616.398005
• DOI: 10.1002/oby.21088
• Languages: English
• ISSNs: 1930-7381

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <sec id="oby21088-sec-0001" sec-type="section"> <title>Objective</title> <p>Body mass index (BMI) and intelligence quotient (IQ) are associated. We examined whether this association varied by birth cohort.</p> </sec> <sec id="oby21088-sec-0002" sec-type="section"> <title>Methods</title> <p>Among 37, 414 Danish conscripts, the association between BMI and IQ overall and by birth cohort was examined. IQ was measured by the Børge Prien's Prøve (BPP) group intelligence test score.</p> </sec> <sec id="oby21088-sec-0003" sec-type="section"> <title>Results</title> <p>Compared with men of normal BMI, mean differences (95% CI [confidence interval]) in BPP score were −0.6 (−1.1;–0.1) for underweight men; −0.8 (−1.1;–0.5) for overweight men; and −2.0 (−2.4;–1.5) for men with obesity. Crude prevalence ratios (95% CI) for low cognitive scores associated with obesity were, respectively, 1.52 (1.24; 1.85), 1.64 (1.32; 2.04), 1.56 (1.38; 1.76), and 1.35 (1.18; 1.54) among men born in 1955, 1965–1969, 1970–1979, and 1980–1984. Confounding by familial BMI or IQ could not be controlled.</p> </sec> <sec id="oby21088-sec-0004" sec-type="section"> <title>Conclusions</title> <p>The association between BMI and IQ is subject to secular trends.</p> </sec> </abstract>