Lipids & metabolic liver disease

Association of Metabolic Syndrome With Neuroimaging and Cognitive Outcomes in the UK Biobank

Diabetes CarePublished Cross-sectional study

Authors' conclusion

MetS was associated poorer brain health in dementia-free adults, characterized by less brain volume, greater vascular pathology, and poorer cognition. Further research is necessary to understand whether reversal or improvement of MetS can improve brain health.

Study context

Population
Dementia-free adults, UK Biobank
Participants
37,395 adults
Exposure
Metabolic syndrome (MetS) vs no MetS
Outcome
Structural neuroimaging (MetS vs no MetS)
Methodological detailsmultivariable-adjusted linear regression
  • Multivariable-adjusted linear regression

Main finding

As reported in the abstract

MetS
standardized β, total brain volume −0.06 (95% CI −0.08 to −0.04)
MetS
β, gray matter volume −0.10 (95% CI −0.12 to −0.08)
MetS
β, left hippocampal volume −0.03 (95% CI −0.05 to −0.01)
MetS
β, right hippocampal volume −0.04 (95% CI −0.07 to −0.02)
MetS
β, white matter hyperintensity (WMH) volume 0.08 (95% CI 0.06–0.11)

Observational data: associations, not effects.

Further findings

OutcomeEstimate
Cognitive domains (MetS vs no MetS)MetS vs No MetS · poorer with MetSβ, working memory −0.10 (95% CI −0.13 to −0.07)
Cognitive domains (MetS vs no MetS)MetS vs No MetS · poorer with MetSβ, verbal declarative memory −0.08 (95% CI −0.11 to −0.05)
Cognitive domains (MetS vs no MetS)MetS vs No MetS · poorer with MetSβ, processing speed −0.06 (95% CI −0.09 to −0.04)
Cognitive domains (MetS vs no MetS)MetS vs No MetS · poorer with MetSβ, verbal and numerical reasoning −0.07 (95% CI −0.09 to −0.04)
Cognitive domains (MetS vs no MetS)MetS vs No MetS · poorer with MetSβ, nonverbal reasoning −0.03 (95% CI −0.05 to −0.01)
Cognitive domains (MetS vs no MetS)MetS vs No MetS · poorer with MetSβ, executive function (higher score = poorer) 0.05 (95% CI 0.03–0.08)

Number of MetS components

More MetS components associated with less brain volume, greater WMH and poorer cognition across all domains

Original publication

Association of Metabolic Syndrome With Neuroimaging and Cognitive Outcomes in the UK Biobank. Diabetes Care. Published 19 June 2024. doi:10.2337/dc24-0537

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