Physical and mental demands of work associated with dementia risk in later life - 02/02/25

Highlights |
• | Association of work conditions with diagnosis of dementia in a longitudinal cohort. |
• | High job control and high-skilled jobs were linked to lower dementia risk. |
• | Physical but not psychological demands are associated with lower dementia risks. |
Abstract |
Background |
Work occupies a significant portion of adult life, and both cognitive stimulation and physical activity have been suggested as factors that may lower dementia risk in later life.
Objectives |
To examine the association between mental and physical demands at work and the risk of dementia.
Design |
A cohort study.
Setting |
Seven selected districts in Taiwan, covering both urban and rural areas.
Participants |
4,083 community-dwelling healthy adults aged 55 and older from the Healthy Aging Longitudinal Study.
Measurements |
A job matrix of work conditions by occupation was generated using data from a representative national survey. Mental demands were assessed by job control and psychological demands from the Job Content Questionnaire, as well as skill levels. Physical demands were assessed using a 4-point Likert scale and dichotomized into high and low levels. Dementia diagnoses were identified based on physician diagnosis registered in the National Health Insurance database.
Results |
Over a follow-up period of 6.2 years, 513 participants were diagnosed with dementia. After adjusting for confounding factors in cox regression models, high (vs. low) job control, high -skilled jobs (vs. low), and high physical demands (vs. low) were associated with a reduced future risk of dementia. Psychological demands were not associated with dementia risk.
Conclusions |
Greater utilization of job skills and engagement in physically demanding activities at work may help mitigate the risk of developing dementia. The effects of different dimensions of psychological demands on cognitive health warrant further investigation.
Le texte complet de cet article est disponible en PDF.Keywords : Cognitive functions, Job control, Job strain, Physical activity, Psychological demands
Plan
Bienvenue sur EM-consulte, la référence des professionnels de santé.