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TOPLINE:

High and low levels of HDL cholesterol but not levels of LDL cholesterol are associated with an increased risk for dementia in older adults, a new study found.

METHODOLOGY:

  • Electronic health record and survey data on 184,367 Kaiser Permanente Northern California participants (median age, 69.5 years) with no history of dementia were taken.
  • Cholesterol levels were measured within 2 years of survey completion.

TAKEAWAY:

  • There were 25,214 incident cases of dementia reported over an average follow-up of 8.77 years.
  • Dementia risk was significantly higher in people with low HDL cholesterol (11-41 mg/dL; adjusted hazard ratio, 1.07; 95% confidence interval, 1.03-1.11) and high HDL cholesterol (> 65 mg/dL; aHR, 1.15; 95% CI, 1.11-1.20).
  • The study demonstrates an association between low and high levels of “good” cholesterol but not a causal link.
  • There was no significant association between LDL cholesterol and dementia risk.

IN PRACTICE:

“These results support the conclusion that some lipoproteins may be modifiable risk factors for dementia, even in late life,” the authors wrote.

SOURCE:

The study was conducted by Erin L. Ferguson, MPH, department of epidemiology & biostatistics, University of California, San Francisco, and was funded by the National Institutes of Health. It was published online in Neurology.

LIMITATIONS:

There were no adjustments for apo E status and confounding and selection bias.

DISCLOSURES:

The authors report no relevant disclosures.

A version of this article first appeared on Medscape.com.

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TOPLINE:

High and low levels of HDL cholesterol but not levels of LDL cholesterol are associated with an increased risk for dementia in older adults, a new study found.

METHODOLOGY:

  • Electronic health record and survey data on 184,367 Kaiser Permanente Northern California participants (median age, 69.5 years) with no history of dementia were taken.
  • Cholesterol levels were measured within 2 years of survey completion.

TAKEAWAY:

  • There were 25,214 incident cases of dementia reported over an average follow-up of 8.77 years.
  • Dementia risk was significantly higher in people with low HDL cholesterol (11-41 mg/dL; adjusted hazard ratio, 1.07; 95% confidence interval, 1.03-1.11) and high HDL cholesterol (> 65 mg/dL; aHR, 1.15; 95% CI, 1.11-1.20).
  • The study demonstrates an association between low and high levels of “good” cholesterol but not a causal link.
  • There was no significant association between LDL cholesterol and dementia risk.

IN PRACTICE:

“These results support the conclusion that some lipoproteins may be modifiable risk factors for dementia, even in late life,” the authors wrote.

SOURCE:

The study was conducted by Erin L. Ferguson, MPH, department of epidemiology & biostatistics, University of California, San Francisco, and was funded by the National Institutes of Health. It was published online in Neurology.

LIMITATIONS:

There were no adjustments for apo E status and confounding and selection bias.

DISCLOSURES:

The authors report no relevant disclosures.

A version of this article first appeared on Medscape.com.

 

TOPLINE:

High and low levels of HDL cholesterol but not levels of LDL cholesterol are associated with an increased risk for dementia in older adults, a new study found.

METHODOLOGY:

  • Electronic health record and survey data on 184,367 Kaiser Permanente Northern California participants (median age, 69.5 years) with no history of dementia were taken.
  • Cholesterol levels were measured within 2 years of survey completion.

TAKEAWAY:

  • There were 25,214 incident cases of dementia reported over an average follow-up of 8.77 years.
  • Dementia risk was significantly higher in people with low HDL cholesterol (11-41 mg/dL; adjusted hazard ratio, 1.07; 95% confidence interval, 1.03-1.11) and high HDL cholesterol (> 65 mg/dL; aHR, 1.15; 95% CI, 1.11-1.20).
  • The study demonstrates an association between low and high levels of “good” cholesterol but not a causal link.
  • There was no significant association between LDL cholesterol and dementia risk.

IN PRACTICE:

“These results support the conclusion that some lipoproteins may be modifiable risk factors for dementia, even in late life,” the authors wrote.

SOURCE:

The study was conducted by Erin L. Ferguson, MPH, department of epidemiology & biostatistics, University of California, San Francisco, and was funded by the National Institutes of Health. It was published online in Neurology.

LIMITATIONS:

There were no adjustments for apo E status and confounding and selection bias.

DISCLOSURES:

The authors report no relevant disclosures.

A version of this article first appeared on Medscape.com.

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