Lipids & metabolic liver disease

The Presence and Severity of Nonalcoholic Fatty Liver Disease (NAFLD) are Associated With Cognitive Impairment and Hippocampal Damage

J Clin Endocrinol MetabPublished Cross-sectional study

Authors' conclusion

We are the first to report the presence and severity of NAFLD to be associated with an increased risk of memory impairment and hippocampal structural and functional abnormalities. These findings stress the significance of early cognitive evaluation in patients with NAFLD.

Study context

Population
Subjects who underwent liver biopsy; 225 had cognitive assessments, 70 had functional MRI225 cognitively assessed
Participants
320 subjects
Exposure
NAFLD vs controls
Outcome
Cognitive function and memory impairment
Methodological detailsliver biopsy, functional MRI, structural equation model
  • Liver biopsy
  • Functional MRI
  • Structural equation model

Main finding

As reported in the abstract

Memory impairment
Odds ratio (95% CI)
Severe liver steatosis
2.189(1.020–4.699)
Ballooning
3.655(1.419–9.414)

Observational data: associations, not effects.

Further findings

Hippocampal structure and function (MRI)

NASH: volume loss in left hippocampus and its subiculum and presubiculum
NASH: decreased left hippocampal activation on task-based MRI
Path analysis: higher NAFLD activity scores associated with lower subiculum volume and reduced hippocampal activation, which contributed to lower delayed memory scores

Original publication

The Presence and Severity of NAFLD are Associated With Cognitive Impairment and Hippocampal Damage. J Clin Endocrinol Metab. Published 13 June 2023. doi:10.1210/clinem/dgad352

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