Prevention and reduction of cognitive decline

Cognitive impairment is becoming an increasingly important challenge as populations age worldwide. The lecture highlights the growing prevalence of mild cognitive impairment and dementia and emphasizes that the projected increase is expected to be particularly substantial in low- and middle-income countries. This changing epidemiological landscape strengthens the need to focus not only on treatment, but also on dementia prevention and risk reduction. 

A central theme is the expanding understanding of modifiable risk factors. The lecture discusses estimates suggesting that a substantial proportion of dementia risk may potentially be modified and reviews factors such as hearing loss, hypertension, diabetes, obesity, smoking, excessive alcohol consumption, social isolation, air pollution, vision loss, and other health and lifestyle determinants. Hearing impairment and social isolation receive particular attention because of their potentially important contribution to cognitive risk. 

The FINGER study is presented as an important example of a multidomain intervention aimed at preserving cognition. Rather than relying on a single preventive measure, the lecture advocates a continuous, comprehensive approach incorporating nutrition, physical activity, cardiovascular risk-factor management, cognitive stimulation, adequate sleep, social interaction, stress management, and healthy habits. Brain health is therefore framed as a long-term process requiring simultaneous attention to several interconnected domains. 

The lecture also considers how preventive knowledge can be translated into clinical practice. Memory clinics can provide risk-factor screening, comprehensive assessment, and early detection, but individuals with subjective cognitive concerns may require more than generic recommendations. Personalized plans, achievable goals, individual communication, health coaching, and community support are discussed as possible ways to improve implementation and long-term adherence. 

Finally, the lecture addresses practical barriers including limited awareness, restricted access to resources, resistance to behavioral change, time constraints, and insufficient cognitive or social engagement. The overarching message is that sustained lifestyle engagement remains central to brain-health strategies. Pharmacological treatment and cognitive enhancers are discussed as additional approaches, but the lecturer emphasizes that they should not be viewed as substitutes for continued cognitive, physical, and social activity. 

Learn more about this topic in our series of webinars and expert lectures from the International Association of Gerontology and Geriatrics (IAGG): link

*Provided by International Association of Gerontology & Geriatrics (IAGG) & Federation of Geriatric Education (FGE)

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