The Midlife Dementia Risk-Management Paradox: Developing the Concept of Preventive Capacity for Dementia Prevention

Abstract

Peter John Carey

Dementia prevention has increasingly moved beyond the identification of individual risk factors towards multidomain and life-course approaches, consistent with evidence that risk accumulates and interacts across the lifespan [1,2]. Midlife is an important period because several modifiable exposures during this stage are associated with later dementia, while adults may simultaneously face substantial occupational, family, financial and social demands [3,4]. Yet identifying potentially modifiable risks does not by itself resolve the practical problem of managing prevention. Individuals may need to interpret multiple recommendations, determine their relative importance, reconcile them with competing demands, translate intentions into action and sustain behaviours as circumstances change. This conceptual paper develops the Midlife Dementia Risk-Management Paradox and proposes Midlife Preventive Capacity (MPC) as a prevention-specific extension of workload-capacity thinking. The paradox describes a tension in which expanding knowledge of modifiable dementia risk creates additional opportunities for prevention while potentially increasing the number and complexity of decisions that individuals must coordinate. It is expressed through four interacting processes: risk proliferation, risk convergence, risk competition and risk prioritisation. MPC is defined as the dynamic capacity, supported by relevant relational and structural resources, to recognise, integrate, prioritise, implement, adapt and sustain responses to multiple potentially modifiable dementia-associated risks within the circumstances of midlife. The construct is explicitly distinguished from health literacy, self-efficacy and COM-B, and from the established concept of prevention burden. Prevention burden concerns the workload and demands generated by preventive activity; MPC concerns the capacity to manage that workload as a coordinated portfolio of preventive action. Drawing on the Cumulative Complexity Model and minimally disruptive medicine, the paper extends workload-capacity reasoning from diagnosed chronic illness to pre-diagnosis dementia-risk management. The framework generates empirically testable propositions concerning prevention complexity, prioritisation, contextual constraint, support and sustainability. MPC is presented as a provisional construct requiring empirical validation, not as an established determinant of dementia outcomes.

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