Obesity is linked with lower brain volume in 700 AD and MCI patients

April J. Ho, Cyrus A. Raji, James T. Becker, Oscar L. Lopez, Lewis H. Kuller, Xue Hua, Suh Lee, Derrek Hibar, Ivo D. Dinov, Jason L. Stein, Clifford R. Jack, Michael W. Weiner, Arthur W. Toga, Paul M. Thompson

Research output: Contribution to journalArticle

117 Scopus citations

Abstract

Obesity is associated with lower brain volumes in cognitively normal elderly subjects, but no study has yet investigated the effects of obesity on brain structure in patients with mild cognitive impairment (MCI) or Alzheimer's disease (AD). To determine if higher body mass index (BMI) is associated with brain volume deficits in cognitively impaired elderly subjects, we analyzed brain magnetic resonance imaging (MRI) scans of 700 MCI or AD patients from 2 different cohorts: the Alzheimer's Disease Neuroimaging Initiative (ADNI) and the Cardiovascular Health Study-Cognition Study (CHS-CS). Tensor-based morphometry (TBM) was used to create 3-dimensional maps of regional tissue excess or deficits in subjects with MCI (ADNI, n = 399; CHS-CS, n = 77) and AD (ADNI, n = 188; CHS, n = 36). In both AD and MCI groups, higher body mass index was associated with brain volume deficits in frontal, temporal, parietal, and occipital lobes; the atrophic pattern was consistent in both ADNI and CHS populations. Cardiovascular risk factors, especially obesity, should be considered as influencing brain structure in those already afflicted by cognitive impairment and dementia.

Original languageEnglish (US)
Pages (from-to)1326-1339
Number of pages14
JournalNeurobiology of aging
Volume31
Issue number8
DOIs
StatePublished - Aug 1 2010

Keywords

  • ADNI
  • Alzheimer's disease
  • Body mass index (BMI)
  • Brain structure
  • Mild cognitive impairment
  • Tensor-based morphometry

ASJC Scopus subject areas

  • Neuroscience(all)
  • Aging
  • Clinical Neurology
  • Developmental Biology
  • Geriatrics and Gerontology

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    Ho, A. J., Raji, C. A., Becker, J. T., Lopez, O. L., Kuller, L. H., Hua, X., Lee, S., Hibar, D., Dinov, I. D., Stein, J. L., Jack, C. R., Weiner, M. W., Toga, A. W., & Thompson, P. M. (2010). Obesity is linked with lower brain volume in 700 AD and MCI patients. Neurobiology of aging, 31(8), 1326-1339. https://doi.org/10.1016/j.neurobiolaging.2010.04.006