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The journal of nutrition, health & aging

, Volume 20, Issue 3, pp 280–287 | Cite as

Serum cholesterol levels within the high normal range are associated with better cognitive performance among Chinese elderly

  • Y.-B. Lv
  • Z. X. Yin
  • C.-L. Chei
  • M. S. Brasher
  • J. Zhang
  • V. B. Kraus
  • F. Qian
  • Xiaoming Shi
  • D. B. Matchar
  • Y. Zeng
Article

Abstract

Objectives

The association between cognitive function and cholesterol levels is poorly understood and inconsistent results exist among the elderly. The purpose of this study is to investigate the association of cholesterol level with cognitive performance among Chinese elderly.

Design

A cross-sectional study was implemented in 2012 and data were analyzed using generalized additive models, linear regression models and logistic regression models.

Setting

Community-based setting in eight longevity areas in China.

Subjects

A total of 2000 elderly aged 65 years and over (mean 85.8±12.0 years) participated in this study.

Measurements

Total cholesterol (TC), triglycerides (TG), low density lipoprotein cholesterol (LDL-C) and high density lipoprotein cholesterol (HDL-C) concentration were determined and cognitive impairment was defined as Mini-Mental State Examination (MMSE) score≤23.

Results

There was a significant positive linear association between TC, TG, LDL-C, HDL-C and MMSE score in linear regression models. Each 1 mmol/L increase in TC, TG, LDL-C and HDL-C corresponded to a decreased risk of cognitive impairment in logistic regression models. Compared with the lowest tertile, the highest tertile of TC, LDL-C and HDL-C had a lower risk of cognitive impairment. The adjusted odds ratios and 95% CI were 0.73(0.62–0.84) for TC, 0.81(0.70–0.94) for LDL-C and 0.81(0.70–0.94) for HDL-C. There was no gender difference in the protective effects of high TC and LDL-C levels on cognitive impairment. However, for high HDL-C levels the effect was only observed in women. High TC, LDL-C and HDL-C levels were associated with lower risk of cognitive impairment in the oldest old (aged 80 and older), but not in the younger elderly (aged 65 to 79 years).

Conclusions

These findings suggest that cholesterol levels within the high normal range are associated with better cognitive performance in Chinese elderly, specifically in the oldest old. With further validation, low cholesterol may serve a clinical indicator of risk for cognitive impairment in the elderly.

Keywords

Cholesterol Chronic Kidney Disease Cognitive Impairment Mild Cognitive Impairment High Density Lipoprotein Cholesterol 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Serdi and Springer-Verlag France 2016

Authors and Affiliations

  • Y.-B. Lv
    • 1
  • Z. X. Yin
    • 1
  • C.-L. Chei
    • 2
  • M. S. Brasher
    • 3
  • J. Zhang
    • 1
  • V. B. Kraus
    • 4
  • F. Qian
    • 5
  • Xiaoming Shi
    • 6
    • 10
  • D. B. Matchar
    • 2
    • 7
  • Y. Zeng
    • 8
    • 9
  1. 1.Division of Non-Communicable Disease Control and Community HealthChinese Center for Disease Control and PreventionBeijingChina
  2. 2.Health Services and Systems ResearchDuke-NUS Graduate Medical School SingaporeSingaporeSingapore
  3. 3.Department of Sociology and Anthropology; Department of Human Development and Family StudiesUniversity of Rhode IslandKingstonUSA
  4. 4.Duke Molecular Physiology Institute, Department of MedicineDuke University School of MedicineDurhamUSA
  5. 5.Center for Clinical Cancer Genetics and Global Health, Department of MedicineUniversity of ChicagoChicagoUSA
  6. 6.Institute of Environmental Health and Related Product SafetyChinese Center for Disease Control and PreventionBeijingChina
  7. 7.Division of General Internal Medicine, Department of MedicineDuke University School of MedicineDurhamUSA
  8. 8.Center for the Study of Aging and Human Development and the Geriatric Division of School of MedicineDuke UniversityDurhamUSA
  9. 9.Center for Study of Healthy Aging and Development StudiesPeking UniversityBeijingChina
  10. 10.BeijingChina

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