Summary: Researchers report people aged 50 and over who participate in social activity through a community based group appear to have better cognitive function than their less social peers.
Source: Biomed Central.
Social engagement through civic group activities, such as being a member of a political party, an environmental group, neighborhood watch, a voluntary service group or other community based groups, is associated with better cognitive function at age 50, according to a study published in the open access journal BMC Psychology which included 9,119 men and women from England, Scotland and Wales.
Researchers at the University of Southampton found that a person’s cognitive ability at age 11; their participation in civic activities at ages 33 and 50; frequent physical activity; higher educational qualification and female gender were all associated with better cognitive function at age 50. Having low socio-economic status as a child and reporting worse mental well-being in adulthood were both associated with worse cognitive function at age 50.
Professor Ann Bowling, lead author of the study said: “While the associations between adult social engagement and cognitive function at age 50 we found were moderate, they persisted after we adjusted for covariates, such as health, socio-economic status and gender. The implication is that if people continue to engage socially throughout life, maintaining related behaviours that require cognitive skills such as memory, attention and control, there may be some protection from cognitive decline. Public health policy interventions aimed at promoting cognitive health could include encouraging civic engagement and providing people with opportunities for this.”
Previous research has suggested that social integration, social engagement and strong social networks may be associated with better cognitive outcomes. Furthermore, social capital – opportunities within communities for social, leisure, recreational activities, voluntary work or group membership – have been shown to be associated with enhanced well-being and better reported mental health, as well as reduced levels of stress, loneliness and isolation. However, few of these studies followed participants throughout their life.
To investigate associations between people’s social engagement throughout their adult life and cognitive function at age 50, the researchers used data from the British National Child Development Study (NCDS), a general population sample in England, Scotland and Wales. Baseline data was collected at birth in 1958 and study participants were followed up at several points later in life.
At age 33, 83% of all respondents reported that they did not participate in any civic organization. This number dropped to 64% at age 50. Participating in one civic organization was reported by 14% of respondents at age 33 and by 25% at age 50. Out of the overall sample, 8,129 participants completed cognitive tests at ages eleven (reading, writing, math, and general ability tests) and 50 (memory and visual attention, speed and concentration tests). The researchers found that almost a third of the sample population’s cognitive ability deteriorated between ages eleven and 50, while remaining unchanged in less than half of participants (44%). A quarter of participants showed improved cognitive ability at age 50. Those who reported that they participated in civic groups at age 33 and 50 scored higher in cognitive tests. Also, participation in each additional civic group was found to further increase scores on cognitive tests.
The present study used a large, longitudinal cohort with strong initial response rates, allowing the researchers to take into account complex interactions between social and biological processes and to adjust for various confounding factors. However, observational studies like this one cannot show cause and effect, but can describe possible links.
Source: Anne Korn – Biomed Central
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Original Research: Full open access research for “Is mid-life social participation associated with cognitive function at age 50? Results from the British National Child Development Study (NCDS)” by Ann Bowling, Jitka Pikhartova and Brian Dodgeon in BMC Psychology. Published online December 2 2016 doi:10.1186/s40359-016-0164-x
Is mid-life social participation associated with cognitive function at age 50? Results from the British National Child Development Study (NCDS)
Some studies have indicated that social engagement is associated with better cognitive outcomes. This study aimed to investigate associations between life-course social engagement (civic participation) and cognitive status at age 50, adjusting for social networks and support, behavioural, health, social and socio-economic characteristics.
The vehicle for the study was the National Child Development Study (1958 Birth Cohort Study), which is a general population sample in England, Scotland and Wales (9119: 4497 men and 4622 women) participating in nationally representative, prospective birth cohort surveys. The primary outcome variable was cognitive status at age 50, measured by memory test (immediate and delayed word recall test) and executive functioning test (word fluency and letter cancelation tests). The influence of hypothesised predictor variables was analysed using linear multiple regression analysis.
Cognitive ability at age 11 (β = 0.19;95% CI = 0.17 to 0.21), participation in civic activities at ages 33 (0.12; 0.02 to 0.22) and 50 (0.13; 0.07 to 0.20), frequent engagement in physical activity (sport) (β from 0.15 to 0.18), achieving higher level qualifications (β from 0.23 to 1.08), and female gender (β = 0.49;95% CI = 0.38 to 0.60) were positively, significantly and independently associated with cognitive status at age 50. Having low socio-economic status at ages 11 (β from -0.22 to -0.27) and 42 (β from -0.28 to -0.38), and manifesting worse mental well-being at age 42 (β = -0.18; 95% CI = -0.33 to -0.02) were inversely associated with cognitive status at age 50. The proportion of explained variance in the multiple regression model (18%), while modest, is impressive given the multi-faceted causal nature of cognitive status.
The results indicate that modest associations between adult social engagement and cognitive function at age 50 persist after adjusting for covariates which included health, socio-economic status and gender, supporting theories of neuroplasticity. In addition to the continuing emphasis on physical activity, the encouragement of civic participation, at least as early as mid-life, should be a targeted policy to potentially promote and protect cognitive function in later mid-life.
“Is mid-life social participation associated with cognitive function at age 50? Results from the British National Child Development Study (NCDS)” by Ann Bowling, Jitka Pikhartova and Brian Dodgeon in BMC Psychology. Published online December 2 2016 doi:10.1186/s40359-016-0164-x