Lipids & metabolic liver disease

Associations between use of aspirin and magnetic resonance imaging‐derived liver fat and fibroinflammation

Diabetes Obes MetabPublished Population-based cohort study

Authors' conclusion

In this large population-based cohort, aspirin use was linked to reduced liver fat, but a small, clinically insignificant (i.e., <80 ms) increase in cT1. These findings suggest aspirin may mitigate steatosis through metabolic pathways but does not necessarily rapidly reverse fibroinflammatory injury.

Study context

Population
UK Biobank imaging cohort participants; mean age 64.6 years, 51.4% female
Participants
36,413 participants
Exposure
Aspirin use vs no aspirin use; longitudinal aspirin use patterns vs never users
Outcome
Magnetic resonance imaging (MRI)-derived liver fat (%) and corrected T1 (cT1, ms)
Methodological detailsUK Biobank imaging cohort, multivariable adjustment, inverse probability of treatment weighting (IPTW)
  • UK Biobank imaging cohort
  • Multivariable adjustment
  • Inverse probability of treatment weighting (IPTW)

Main finding

As reported in the abstract

Aspirin use at imaging assessment: liver fat and cT1
Aspirin use vs No aspirin useDifference in liver fat, % (95% CI)
Lower liver fat with aspirin
−0.35(−0.51 to −0.20)
Aspirin use vs No aspirin useDifference in cT1, ms (95% CI)
Slightly higher cT1 with aspirin
5.13(3.23–7.03)

Observational data: associations, not effects.

Further findings

OutcomeDifference in liver fat (%) (CI)
Longitudinal aspirin use patterns vs never users: liver fat and cT1Initiatorsvs Never usersLower liver fat · IPTW analyses showed consistent results−0.48 (−0.69 to −0.28)
Longitudinal aspirin use patterns vs never users: liver fat and cT1Persistent usersvs Never usersLower liver fat · IPTW analyses showed consistent results−0.24 (−0.45 to −0.02)
OutcomeDifference in cT1 (ms) (CI)
Longitudinal aspirin use patterns vs never users: liver fat and cT1Initiatorsvs Never usersHigher cT1 · IPTW analyses showed consistent results2.94 (0.38–5.49)
Longitudinal aspirin use patterns vs never users: liver fat and cT1Persistent usersvs Never usersHigher cT1 · IPTW analyses showed consistent results8.31 (5.65–10.97)

Original publication

Associations between use of aspirin and magnetic resonance imaging‐derived liver fat and fibroinflammation. Diabetes Obes Metab. Published 18 February 2026. doi:10.1111/dom.70570

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