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J Nutr Health Aging. 2011 Jan;15(1):32-5.

Omega-3 polyunsaturated fatty acid supplements and cognitive decline: Singapore Longitudinal Aging Studies.

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  • 1Gerontological Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.

Abstract

OBJECTIVE:

To determine the association between long chain omega-3 polyunsaturated fatty acid (n-3 PUFA) supplements intake and cognitive decline in an older Chinese population.

DESIGN:

Prospective cohort study.

SETTING:

The Singapore Longitudinal Aging Studies (SLAS), a community-based study in urban region of Singapore.

PARTICIPANTS:

1,475 Chinese adults aged ≥ 55 years.

MEASUREMENT:

Omega-3 PUFA supplements intake and Mini-Mental State Examination (MMSE) were assessed at baseline. MMSE was re-assessed at a median of 1.5 years after baseline and cognitive decline was defined as at least 2-points drop in MMSE score from baseline to follow-up. Odds ratios (ORs) of association between n-3 PUFA supplements intake and cognitive decline were calculated in logistic regression models controlling for baseline confounding variables.

RESULTS:

Daily n-3 PUFA supplements intake was significantly (p=0.024) associated with lower risk of cognitive decline (OR=0.37, 95% C.I. 0.16-0.87) after controlling for age, gender, education, number of medical comorbidity, the presence of vascular risk factors/diseases, smoking, alcohol drinking, depression, APOE e4 allele carrier status, nutritional status, level of leisure activities, baseline MMSE and length of follow-up. The association remained significant (p=0.015) after excluding participants with baseline cognitive impairment (MMSE < 24), diabetes, stroke, and cardiac diseases (OR=0.23, 95% C.I. 0.07-0.75). No statistically significant association (OR=1.02, 95% C.I. 0.81-1.27) of fish consumption with cognitive decline was found.

CONCLUSION:

Daily n-3 PUFA supplements consumption was independently associated with less cognitive decline in elderly Chinese.

PMID:
21267519
[PubMed - indexed for MEDLINE]
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