Factors affecting subjective cognitive decline in older adults based on the health ecological model: a scoping review (opens in new tab)

ObjectiveTo systematically review and synthesize the factors influencing subjective cognitive decline (SCD) in older adults based on the Health Ecological Model (HEM), and to provide direction for future research.MethodsRelevant literature on factors influencing SCD in older adults was retrieved from five databases (CNKI, Wanfang, VIP, PubMed, and Web of Science) from database inception to October 18, 2025.ResultsA total of 33 articles were included, comprising 21 Chinese and 12 English artic...