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Statins and cognitive function: an updated review.

Saurav Chatterjee1, Parasuram Krishnamoorthy, Pragya Ranjan

  • 1Division of Cardiovascular Diseases, St. Luke's-Roosevelt Hospital Center of the Mount Sinai Health System, 1111 Amsterdam Avenue Clark Building, 3rd floor, New York, NY, 10025, USA, sauravchatterjeemd@gmail.com.

Current Cardiology Reports
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PubMed
Summary
This summary is machine-generated.

Statins, used for heart disease, may protect against dementia in healthy individuals. However, evidence is mixed regarding their effect on existing cognitive decline, necessitating further research.

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Area of Science:

  • Cardiovascular Medicine
  • Neurology
  • Pharmacology

Background:

  • Ischemic heart disease is a leading cause of death in the USA.
  • Statins significantly reduce heart disease mortality.
  • Statins are historically considered neuroprotective, but recent concerns suggest potential cognitive decline.
  • The relationship between statin use and cognitive function requires critical appraisal.

Purpose of the Study:

  • To review and critically appraise the existing evidence on the relationship between statin use and cognitive function, particularly in relation to dementia and Alzheimer's disease.

Main Methods:

  • Systematic review and critical appraisal of observational studies and randomized controlled trials (RCTs) investigating statin effects on cognition.
  • Analysis of data from studies examining statin use in individuals with normal baseline cognition versus those with established cognitive decline or dementia.

Main Results:

  • Observational studies predominantly suggest a protective effect of statins against dementia and Alzheimer's disease in individuals with normal baseline cognition.
  • Limited evidence from randomized controlled trials does not show a statistically significant reduction in dementia risk or improvement in cognitive function in patients with established dementia or cognitive decline.
  • Current evidence is insufficient to definitively conclude on the cognitive effects of statins.

Conclusions:

  • The cardiovascular benefits of statins are well-established.
  • The impact of statins on cognitive function remains uncertain, with conflicting evidence.
  • Individualized assessment weighing cardiovascular benefits against potential cognitive risks is recommended.