Intellectual and physical activities, but not social activities, are associated with better global cognition: a multi-site evaluation of the cognition and lifestyle activity study for seniors in Asia (CLASSA).

BACKGROUND: population ageing will lead to a leap in the dementia population in Asia. However, information about potentials for low-cost and low-risk interventions is limited. OBJECTIVES: to study the associations between lifestyle activities and global cognition from the Cognitive and Lifestyle Activity Study for Seniors in Asia (CLASSA). DESIGN: a cross-sectional study. METHODOLOGY: we studied the association between global cognition and lifestyle activity participation in community living older adults (60 years or over) across nine sites in East Asia. A standardised lifestyle activity questionnaire exploring activities from four categories (intellectual, physical, social and recreational) was used to measure the pattern. Global cognition was categorised by locally validated versions of Mini-mental state examination (MMSE) or Montreal Cognitive Assessment (MoCA) (good cognition, GC-scored at the top 25% among participants with no significant cognitive deficit (SCD); normal cognition, NC-middle 50% among participants with no SCD; mild cognitive deficit, MCD-lowest 25% among participants with no SCD; SCD-below local cut-offs for dementia). RESULTS: two thousand four hundred and four (1,009 men; 1,395 women) participants were recruited. The mean age was 71.0 (7.2) years. A higher variety of intellectual and physical activities were associated with GC; more social activities were associated with higher risks of having impaired cognition (multinomial logistic regression). The same association was found in participants with no SCD and had regular activities for over 10 years (n = 574). CONCLUSION: intellectual activity and physical exercise were associated with better cognitive states in Asian older adults. Community-based intervention may take considerations into specific types of activities to optimise cognition.

Do depression and educational attainment mediate the association between ethnicity and dementia?

INTRODUCTION: Research shows marked differences in the prevalence of dementia among different ethnic groups. However, there is a relative dearth of studies focusing on how ethnicity may influence dementia. The main aim of the current study is to test potential mediating effects of depression and level of education on the association between ethnicity and dementia. METHODS: The sample for this study, consisting of 2,796 community-dwelling elderly people aged 60 years and older, was drawn from a cross-sectional national survey entitled 'Mental Health and Quality of Life of Older Malaysians'. The Malaysian adapted version of the Geriatric Mental State-Automated Geriatric Examination for Computer-Assisted Taxonomy was used to assess dementia and depression. Data analysis was conducted using IBM SPSS version 19. RESULTS: As expected, the result of the χ2 analysis revealed significant ethnic difference in the prevalence of dementia (χ2 = 58.05, p ≤ 0.001). The results of the mediational analyses revealed that depression (Z = 4.05, p ≤ 0.001) and education (Z = 2.78, p ≤ 0.01) significantly, but partially, mediate the association between ethnicity and dementia. This suggests that disparities of depressive symptoms and education contribute to ethnic difference in the prevalence of dementia. CONCLUSIONS: These findings provide more insight into how ethnicity may influence an individual's vulnerability to dementia. The limitations of the study along with implications of the findings and needs for further study are discussed.

Treatment of dementia and mild cognitive impairment with or without cerebrovascular disease: Expert consensus on the use of Ginkgo biloba extract, EGb 761®.

BACKGROUND: The Ginkgo biloba special extract, EGb 761® has been widely used in the treatment of neuropsychiatric disorders, including Alzheimer's disease (AD). METHODS: To guide clinical practice in the Asian region, the Asian Clinical Expert Group on Neurocognitive Disorders compiled evidence-based consensus recommendations regarding the use of EGb 761® in neurocognitive disorders with/without cerebrovascular disease. RESULTS: Key randomized trials and robust meta-analyses have demonstrated significant improvement in cognitive function, neuropsychiatric symptoms, activities of daily living (ADL) and quality of life with EGb 761® versus placebo in patients with mild-to-moderate dementia. In those with mild cognitive impairment (MCI), EGb 761® has also demonstrated significant symptomatic improvement versus placebo. World Federation of Societies of Biological Psychiatry guidelines list EGb 761® with the same strength of evidence as acetylcholinesterase inhibitors and N-methyl-D-aspartate (NMDA) antagonists e.g. memantine (Grade 3 recommendation; Level B evidence). Only EGb 761® had Level B evidence in improving cognition, behaviour, and ADL in both AD and vascular dementia patients. Safety analyses show EGb 761® to have a positive risk-benefit profile. While concerns have been raised regarding a possible increased bleeding risk, several randomized trials and two meta-analyses have not supported this association. CONCLUSIONS: The Expert Group foresee an important role for EGb 761® , used alone or as an add-on therapy, in the treatment of MCI and dementias, particularly when patients do not derive benefit from acetylcholinesterase inhibitors or NMDA antagonists. EGb 761® should be used in alignment with local clinical practice guidelines.

Loneliness as a risk factor for hypertension in later life.

OBJECTIVE: The present study aims to determine the impact of loneliness on hypertension in later life. METHOD: Data for this study are derived from a sample of 1,880 older Malaysians via a cross-sectional survey entitled "Patterns of Social Relationships and Psychological Well-Being Among Older Persons in Peninsular Malaysia." Loneliness is assessed by the PGCMS item, "How much do you feel lonely?" Data analysis is carried out using the Statistical Package for Social Sciences (SPSS) version 19.0. RESULTS: Nearly one third of respondents report high level of loneliness. The overall prevalence of hypertension is 39% (95% CI=36.9-41.3). Logistic regression, controlling for sociodemographic factors and several chronic medical conditions, shows that loneliness significantly increases likelihood of hypertension in later life (OR=1.31, p≤.05, 95% CI=1.04-1.66). DISCUSSION: The results show loneliness as a major risk factor for hypertension and call for health care professionals to be aware of the negative physiological effects of loneliness in old age.