Dog ownership and the risk of cardiovascular disease and death – a nationwide cohort study

Abstract

Dogs may be beneficial in reducing cardiovascular risk in their owners by providing social support and motivation for physical activity. We aimed to investigate the association of dog ownership with incident cardiovascular disease (CVD) and death in a register-based prospective nation-wide cohort (n = 3,432,153) with up to 12 years of follow-up. Self-reported health and lifestyle habits were available for 34,202 participants in the Swedish Twin Register. Time-to-event analyses with time-updated covariates were used to calculate hazard ratios (HR) with 95% confidence intervals (CI). In single- and multiple-person households, dog ownership (13.1%) was associated with lower risk of death, HR 0.67 (95% CI, 0.65-0.69) and 0.89 (0.87-0.91), respectively; and CVD death, HR 0.64 (0.59-0.70), and 0.85 (0.81-0.90), respectively. In single-person households, dog ownership was inversely associated with cardiovascular outcomes (HR composite CVD 0.92, 95% CI, 0.89-0.94). Ownership of hunting breed dogs was associated with lowest risk of CVD. Further analysis in the Twin Register could not replicate the reduced risk of CVD or death but also gave no indication of confounding by disability, comorbidities or lifestyle factors. In conclusion, dog ownership appears to be associated with lower risk of CVD in single-person households and lower mortality in the general population.

Published in

Scientific Reports
2017, Volume: 7, article number: 15821
Publisher: NATURE PUBLISHING GROUP

SLU Authors

• Egenvall, Agneta

  • Department of Clinical Sciences, Swedish University of Agricultural Sciences
    

Sustainable Development Goals

SDG3 Good health and well-being


UKÄ Subject classification

Public Health, Global Health, Social Medicine and Epidemiology
Cardiac and Cardiovascular Systems


Publication identifier

DOI: https://doi.org/10.1038/s41598-017-16118-6

Permanent link to this page (URI)

https://res.slu.se/id/publ/93243