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Integrating the environmental and genetic architectures of aging and mortality

Abstract:
Both environmental exposures and genetics are known to play important roles in shaping human aging. Here we aimed to quantify the relative contributions of environment (referred to as the exposome) and genetics to aging and premature mortality. To systematically identify environmental exposures associated with aging in the UK Biobank, we first conducted an exposome-wide analysis of all-cause mortality (n = 492,567) and then assessed the associations of these exposures with a proteomic age clock (n = 45,441), identifying 25 independent exposures associated with mortality and proteomic aging. These exposures were also associated with incident age-related multimorbidity, aging biomarkers and major disease risk factors. Compared with information on age and sex, polygenic risk scores for 22 major diseases explained less than 2 percentage points of additional mortality variation, whereas the exposome explained an additional 17 percentage points. Polygenic risk explained a greater proportion of variation (10.3-26.2%) compared with the exposome for incidence of dementias and breast, prostate and colorectal cancers, whereas the exposome explained a greater proportion of variation (5.5-49.4%) compared with polygenic risk for incidence of diseases of the lung, heart and liver. Our findings provide a comprehensive map of the contributions of environment and genetics to mortality and incidence of common age-related diseases, suggesting that the exposome shapes distinct patterns of disease and mortality risk, irrespective of polygenic disease risk.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1038/s41591-024-03483-9

Authors

More by this author
Institution:
University of Oxford
Division:
MSD
Department:
Nuffield Department of Population Health
Sub department:
Clinical Trial Service Unit
Role:
Author
ORCID:
0000-0003-0242-853X
More by this author
Institution:
University of Oxford
Division:
MSD
Department:
Nuffield Department of Population Health
Sub department:
Clinical Trial Service Unit
Role:
Author
ORCID:
0000-0002-8944-1771
More by this author
Institution:
University of Oxford
Division:
MSD
Department:
Psychiatry
Oxford college:
St Cross College
Role:
Author
ORCID:
0000-0001-9276-2720
More by this author
Institution:
University of Oxford
Division:
MSD
Department:
Psychiatry
Role:
Author
ORCID:
0000-0002-9335-9260
More by this author
Institution:
University of Oxford
Division:
MSD
Department:
Nuffield Department of Population Health
Sub department:
Clinical Trial Service Unit
Role:
Author
ORCID:
0000-0002-8010-2503


More from this funder
Funder identifier:
https://ror.org/00k4n6c32
Grant:
873749
Programme:
Horizon 2020
More from this funder
Funder identifier:
https://ror.org/029chgv08
Grant:
203141/Z/16/Z
223100/Z/21/Z
More from this funder
Funder identifier:
https://ror.org/02wdwnk04
Grant:
RE/18/3/34214


Publisher:
Springer Nature
Journal:
Nature Medicine More from this journal
Volume:
31
Issue:
3
Pages:
1016-1025
Place of publication:
United States
Publication date:
2025-02-19
Acceptance date:
2024-12-18
DOI:
EISSN:
1546-170X
ISSN:
1078-8956
Pmid:
39972219


Language:
English
Pubs id:
2090908
Local pid:
pubs:2090908
Deposit date:
2025-03-12
ARK identifier:

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