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Childhood cognitive ability and age at menopause: evidence from two cohort studies

Kuh, D; Butterworth, S; Kok, H; Richards, M; Hardy, R; Wadsworth, MEJ; Leon, DA; (2005) Childhood cognitive ability and age at menopause: evidence from two cohort studies. MENOPAUSE , 12 (4) 475 - 482. 10.1097/01.GME.0000153889.40119.4C.

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Abstract

Objective: To investigate whether poorer cognitive ability in childhood is associated with an earlier menopause.Design: Two cohorts were included: a nationally representative British birth cohort study of 1,350 women born in March 1946 and followed LIP to age 54 years, and an Aberdeen cohort study of 3,465 women born in Aberdeen from 1950 to 1956 and followed up to age 44 to 50 years. Both cohorts had prospective information on childhood cognitive ability at age 7 or 8 years.Results: In both cohorts, women with lower cognitive scores in childhood reached menopause earlier than women with higher scores. With follow-up of menopause to 49 years, the hazard ratio (HR) for one standard deviation of the cognitive score was 0.80 (95% CI, 0.72-0.90) in the Aberdeen cohort and 0.84 (95% CI, 0.73-0.97) in the older 1946 birth cohort. The effect was still evident in the 1946 birth cohort with follow-up of menopause to 53 years (HR = 0.87; 95% CI, 0.79-0.95). These ratios were weakly attenuated by adjustment for potential confounding effects of lifetime socioeconomic circumstances, parity, and smoking.Conclusions: The association between early cognitive ability and timing of menopause only partially reflects common risk factors, although residual confounding remains a possibility. Alternatively, early environmental or genetic programming may explain this association, perhaps through setting lifelong patterns of hormone release or causing transient hormonal changes at sensitive periods of development. These findings have implications for the interpretation of studies investigating an association between age at menopause and adult cognitive function.

Type: Article
Title: Childhood cognitive ability and age at menopause: evidence from two cohort studies
DOI: 10.1097/01.GME.0000153889.40119.4C
Keywords: childhood cognition, menopause, cohort study, BRITISH BIRTH COHORT, NATURAL MENOPAUSE, LIFE-COURSE, ALZHEIMERS-DISEASE, WEIGHT, WOMEN, POLYMORPHISMS, MORTALITY, MUTATION, CARRIERS
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education
UCL > Provost and Vice Provost Offices > School of Education > UCL Institute of Education > IOE - Social Science
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute of Cardiovascular Science
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute of Epidemiology and Health
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Pop Health Sciences > Institute of Epidemiology and Health > Behavioural Science and Health
URI: http://discovery.ucl.ac.uk/id/eprint/55809
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