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Alzheimers Dement. 2014 Mar;10(2):179-86. doi: 10.1016/j.jalz.2013.03.002. Epub 2013 May 21.

Personality and risk of Alzheimer's disease: new data and meta-analysis.

Author information

1
National Institute on Aging, National Institutes of Health, Baltimore, MD, USA; Florida State University College of Medicine, Tallahassee, FL, USA. Electronic address: antonio.terracciano@med.fsu.edu.
2
National Institute on Aging, National Institutes of Health, Baltimore, MD, USA; Florida State University College of Medicine, Tallahassee, FL, USA.
3
National Institute on Aging, National Institutes of Health, Baltimore, MD, USA.
4
Department of Neurology, Johns Hopkins University, Baltimore, MD, USA.

Abstract

BACKGROUND:

We examine whether broad factors and specific facets of personality are associated with increased risk of incident Alzheimer's disease (AD) in a long-run longitudinal study and a meta-analysis of published studies.

METHODS:

Participants (n = 1671) were monitored for up to 22 years from a baseline personality assessment. The meta-analysis pooled results from up to five prospective studies (n = 5054).

RESULTS:

Individuals with scores in the top quartile of neuroticism (hazard ratio = 3.1; 95% confidence interval = 1.6-6.0) or the lowest quartile of conscientiousness (hazard ratio = 3.3; 95% confidence interval = 1.4-7.4) had a threefold increased risk of incident AD. Among the components of these traits, self-discipline and depression had the strongest associations with incident AD. The meta-analysis confirmed the associations of neuroticism (P = 2 × 10(-9)) and conscientiousness (P = 2 × 10(-6)), along with weaker effects for openness and agreeableness (P < .05).

CONCLUSIONS:

The current study and meta-analysis indicate that personality traits are associated with increased risk of AD, with effect sizes similar to those of well-established clinical and lifestyle risk factors.

KEYWORDS:

APOE; Alzheimer's disease; Anxiety; Conscientiousness; Dementia; Depression; Meta-analysis; Neuroticism; Observational prospective study; Order; Self-discipline

PMID:
23706517
PMCID:
PMC3783589
DOI:
10.1016/j.jalz.2013.03.002
[Indexed for MEDLINE]
Free PMC Article

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