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Emily Sonestedt

Emily Sonestedt

Associate senior lecturer

Emily Sonestedt

Milk intake and incident stroke and coronary heart disease in populations of European descent : A Mendelian Randomization study

Author

  • L. E.T. Vissers
  • I. Sluijs
  • S. Burgess
  • N. G. Forouhi
  • H. Freisling
  • F. Imamura
  • T. K. Nilsson
  • F. Renström
  • E. Weiderpass
  • K. Aleksandrova
  • C. C. Dahm
  • A. Perez-Cornago
  • M. B. Schulze
  • T. Y.N. Tong
  • D. Aune
  • C. Bonet
  • J. M.A. Boer
  • H. Boeing
  • M. D. Chirlaque
  • M. I. Conchi
  • L. Imaz
  • S. Jäger
  • V. Krogh
  • C. Kyrø
  • G. Masala
  • O. Melander
  • K. Overvad
  • S. Panico
  • M. J. Sánches
  • E. Sonestedt
  • A. Tjønneland
  • I. Tzoulaki
  • W. M.M. Verschuren
  • E. Riboli
  • N. J. Wareham
  • J. Danesh
  • A. S. Butterworth
  • Y. T. Van Der Schouw

Summary, in English

Higher milk intake has been associated with a lower stroke risk, but not with risk of coronary heart disease (CHD). Residual confounding or reverse causation cannot be excluded. Therefore, we estimated the causal association of milk consumption with stroke and CHD risk through instrumental variable (IV) and gene-outcome analyses. IV analysis included 29,328 participants (4,611 stroke; 9,828 CHD) of the EPIC-CVD (8 European countries) and EPIC-NL case-cohort studies. rs4988235, a lactase persistence (LP) single nucleotide polymorphism which enables digestion of lactose in adulthood was used as genetic instrument. Intake of milk was first regressed on rs4988235 in a linear regression model. Next, associations of genetically predicted milk consumption with stroke and CHD were estimated using Prentice-weighted Cox regression. Gene-outcome analysis included 777,024 participants (50,804 cases) from MEGASTROKE (including EPIC-CVD), UK Biobank and EPIC-NL for stroke, and 483,966 participants (61,612 cases) from CARDIoGRAM, UK Biobank and EPIC-CVD and EPIC-NL for CHD. In IV analyses, each additional LP allele was associated with a higher intake of milk in EPIC-CVD (β=13.7 g/day; 95%CI: 8.4-19.1) and EPIC-NL (36.8 g/day; 20.0-53.5). Genetically predicted milk intake was not associated with stroke (HR per 25 g/day 1.05; 95%CI: 0.94-1.16) or CHD (1.02; 0.96-1.08). In gene-outcome analyses, there was no association of rs4988235 with risk of stroke (odds ratios 1.02; 0.99-1.05) or CHD (0.99; 0.95-1.03). Current Mendelian Randomization analysis does not provide evidence for a causal inverse relationship between milk consumption and stroke or CHD risk.

Department/s

  • Cardiovascular Research - Hypertension
  • EpiHealth: Epidemiology for Health
  • EXODIAB: Excellence of Diabetes Research in Sweden
  • Nutrition Epidemiology

Publishing year

2021

Language

English

Publication/Series

British Journal of Nutrition

Document type

Journal article

Publisher

Cambridge University Press

Topic

  • Nutrition and Dietetics

Keywords

  • CHD
  • dairy
  • Mendelian Randomization
  • Milk
  • stroke

Status

Epub

Research group

  • Cardiovascular Research - Hypertension
  • Nutrition Epidemiology

ISBN/ISSN/Other

  • ISSN: 0007-1145