Cited by 132Psychological Well-being and Life SatisfactionGenetic Associations and EpidemiologyCardiac Health and Mental Health

Evaluation of the causal effects between subjective wellbeing and cardiometabolic health: mendelian randomisation study

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Wootton, Robyn E, Lawn, Rebecca B, Millard, Louise A C, Davies, Neil M, Taylor, Amy E, Munafò, Marcus R, Timpson, Nicholas J, Davis, Oliver S P +2 more·2018·BMJ

Abstract

Objectives: To investigate whether the association between subjective wellbeing (subjective happiness and life satisfaction) and cardiometabolic health is causal. Design: Two sample, bidirectional mendelian randomisation study. Setting: Genetic data taken from various cohorts comprised of the general population (mostly individuals of European ancestry, plus a small proportion of other ancestries); follow-up analysis included individuals from the United Kingdom. Participants: Summary data were used from previous genome wide association studies (number of participants ranging from 83 198 to 339 224), which investigated traits related to cardiovascular or metabolic health, had the largest sample sizes, and consisted of the most similar populations while minimising sample overlap. A follow-up analysis included 337 112 individuals from the UK Biobank (54% female (n=181 363), mean age 56.87 years (standard deviation 8.00) at recruitment). Main outcome measures: Subjective wellbeing and 11 measures of cardiometabolic health (coronary artery disease; myocardial infarction; total, high density lipoprotein, and low density lipoprotein cholesterol; diastolic and systolic blood pressure; body fat; waist to hip ratio; waist circumference; and body mass index). Results: Evidence of a causal effect of body mass index on subjective wellbeing was seen; each 1 kg/m 2 increase in body mass index caused a −0.045 (95% confidence interval −0.084 to −0.006, P=0.02) standard deviation reduction in subjective wellbeing. Follow-up analysis of this association in an independent sample from the UK Biobank provided strong evidence of an effect of body mass index on satisfaction with health (β=−0.035 unit decrease in health satisfaction (95% confidence interval −0.043 to −0.027) per standard deviation increase in body mass index, P<0.001). No clear evidence of a causal effect was seen between subjective wellbeing and the other cardiometabolic health measures, in either direction. Conclusions: These results suggest that a higher body mass index is associated with a lower subjective wellbeing. A follow-up analysis confirmed this finding, suggesting that the effect in middle aged people could be driven by satisfaction with health. Body mass index is a modifiable determinant, and therefore, this study provides further motivation to tackle the obesity epidemic because of the knock-on effects of higher body mass index on subjective wellbeing.

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  • Metabolic diseases and obesity may adversely impact mental health.

    “which themselves may adversely impact mental health 121-123”

    From A meta-review of "lifestyle psychiatry": the role of exercise, smoking, diet and sleep in the prevention and treatment of mental disorders (2020) · cites this paper as [121]

    The Discussion > Conclusion reports strong evidence that higher body mass index causes lower subjective wellbeing, supporting the obesity part of the claim. It also says there was no clear evidence of a causal association between subjective wellbeing and other measures of cardiometabolic health in either direction, so the broader claim about metabolic diseases is not established by this paper. (LLM, conf=0.88)

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  • Later consequences of a poor diet include obesity and diabetes, which have already been shown to be associated with poorer mental health.

    “For example, the later consequences of a poor diet include obesity and diabetes, which have already been shown to be associated with poorer mental health.11 31 32 33”

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  1. [63]Haworth S Mitchell R Corbin L Common genetic variants and health outcomes appear geographically structured in the UK Biobank sample: Old concerns returning and their implications. bioRxiv 2018; 294876 10.1101/294876. · DOI

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Authors
Wootton, R. E., Lawn, R. B., Millard, L. A. C., Davies, N. M., Taylor, A. E., Munafò, M. R., Timpson, N. J., Davis, O. S. P., Davey Smith, G., & Haworth, C. M. A.
Affiliations
  • University of Bristol (GB)
  • University Hospitals Bristol NHS Foundation Trust (GB)
Corresponding author
Wootton, Robyn E
Venue
BMJ
Publisher
BMJ
Published
2018-09-25
Volume
362
Pages
k3788
ISSN
  • 1756-1833 (ISSN-L)
  • 0959-8138
OpenAlex
W2892535428
Cited by
132
References
70
Citations by year
2026: 11 · 2025: 27 · 2024: 41 · 2023: 10 · 2022: 10 · 2021: 11 · 2020: 12 · 2019: 6 · 2018: 3 · 2012: 1
FWCI
10.77
Type
journal article
Language
en
Open access
Locations
  • BMJ (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • HighWire Press Open Archive (submittedVersion)
  • Bristol Research (University of Bristol) (submittedVersion, cc-by-nc-nd)
Funders
  • Wellcome Trust (102215/2/13/2), 102215, 105612/Z/14/Z, 202802/Z/16/Z, 202802)
  • University Hospitals Bristol NHS Foundation Trust (BRC-1215-20011)
  • Cancer Research UK (C18281/, BRC-1215-20011, C18281 / A19169, A19169)
  • National Institute for Health and Care Research (1215-20011, C18281/A19169, MC_UU_12013/1, BRC-1215-20011)
  • Department of Health and Social Care (BRC-1215-20011)
  • British Academy
  • University of Bristol (MC_UU_12013/1, C18281/A19169, MC_UU_12013/3, MC_UU_12013/9, MC_UU_12013/8, 102215/2/13/2, BRC‐1215‐20011, MC_UU_12013, 105612/Z/14/Z, MC_UU_12013/6)
  • Elizabeth Blackwell Institute for Health Research, University of Bristol (105612/Z/14/Z)
  • Medical Research Council (102215, MC_UU_12013, MC UU 12013/8, 202802/Z/16/Z, MC_UU_12013/1, MC_UU_12013/6, MCUU12013/1, MC_PC_17228, 102215/2/13/2, MC_UU_12013/3, MC_UU_00011/7, MC_UU_00011/1, MC_UU_12013/6, MC_UU_12013/9)
  • Economic and Social Research Council (ES/N000757/1, 102215/2/13/2)
Topics
  • Social Sciences › Psychology › Social Psychology › Psychological Well-being and Life Satisfaction
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Health and Mental Health
Keywords
subjective well-being, happiness, life satisfaction, cardiometabolic health, body mass index, obesity, coronary artery disease, myocardial infarction, cholesterol, blood pressure, waist-to-hip ratio, causal effects
MeSH terms
Adipose Tissue, Blood Pressure, Cardiovascular Diseases, Coronary Disease, Female, United Kingdom, Humans, Cholesterol, HDL, Cholesterol, LDL, Male, Middle Aged, Myocardial Infarction, Systole, Body Mass Index, Adiposity, Waist Circumference, Genome-Wide Association Study, Mendelian Randomization Analysis

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