About the Authors

Tamuno Alfred

tamuno.alfred@bristol.ac.uk

Affiliation School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom

Yoav Ben-Shlomo

Affiliation School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom

Rachel Cooper

Affiliation MRC Unit for Lifelong Health and Ageing and Division of Population Health, University College London, London, United Kingdom

Rebecca Hardy

Affiliation MRC Unit for Lifelong Health and Ageing and Division of Population Health, University College London, London, United Kingdom

Cyrus Cooper

Affiliations MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, United Kingdom, Institute of Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom

Ian J. Deary

Affiliations Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom, Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom

Tom R. Gaunt

Affiliations School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom, MRC Centre for Causal Analyses in Translational Epidemiology, School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom

David Gunnell

Affiliation School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom

Sarah E. Harris

Affiliations Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom, Medical Genetics Section, University of Edinburgh, Edinburgh, United Kingdom

Meena Kumari

Affiliation Department of Epidemiology and Public Health, University College London, London, United Kingdom

Richard M. Martin

Affiliations School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom, MRC Centre for Causal Analyses in Translational Epidemiology, School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom

Avan Aihie Sayer

Affiliations MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton, United Kingdom, Academic Geriatric Medicine, University of Southampton, Southampton General Hospital, Southampton, United Kingdom

John M. Starr

Affiliations Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom, Geriatric Medicine Unit, University of Edinburgh, Royal Victoria Hospital, Edinburgh, United Kingdom

Diana Kuh

Affiliation MRC Unit for Lifelong Health and Ageing and Division of Population Health, University College London, London, United Kingdom

Ian N. M. Day

Affiliations School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom, MRC Centre for Causal Analyses in Translational Epidemiology, School of Social and Community Medicine, University of Bristol, Bristol, United Kingdom

the HALCyon study team

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: I.Day. Analyzed the data: TA. Wrote the paper: TA. Advised on the statistical analyses and contributed to the manuscript: I.Day YB-S. Contributed the HALCyon programme: DK. Contributed studies to the project: YB-S CC I.Deary MK RM AS DK. Provided comments on the manuscript: RC RH CC I.Deary TG DG SH MK RM AS JS DK. Designed the GHR assay: TG.