Can dementia risk be lowered by addressing lifestyle factors?

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Addressing Modifiable Risk Factors Can Significantly Lower Dementia Risk

Yes, dementia risk can be substantially lowered by addressing a range of modifiable lifestyle and health factors. The World Health Organisation (WHO) indicates that up to 45 per cent of dementia risk can be prevented or delayed through these interventions. Dementia, which affects memory, thinking, and the ability to function, is the seventh leading cause of death globally and a major contributor to disability and dependency in older adults, with over 57 million people currently living with the condition worldwide.
Key Modifiable Risk Factors Identified

A significant portion of dementia cases are linked to factors that can be modified. These include tobacco use, excessive alcohol consumption, social isolation, and physical inactivity. Furthermore, environmental factors such as air pollution contribute to the risk. The WHO also highlights the role of noncommunicable diseases (NCDs) like high blood pressure and diabetes as critical modifiable risk factors that influence dementia onset.
Prevention as the Primary Strategy

Given that there is currently no cure for dementia and widely accessible treatments remain limited, prevention is emphasised as the most effective strategy. Alzheimer disease alone accounts for an estimated 60 to 70 per cent of all dementia cases globally. By focusing on reducing exposure to known risk factors, individuals and public health systems can work towards mitigating the growing burden of dementia.
WHO Recommendations for Risk Reduction

The WHO has outlined several recommendations for health workers and policymakers to help prevent or delay dementia. These include promoting cognitive stimulation and training for adults experiencing mild cognitive impairment. Additionally, improved management of existing conditions such as hypertension, diabetes, and high cholesterol is advised as a means to reduce dementia risk.
Integrated Health Services and Economic Impact

The organisation also advocates for a stronger integration of services across NCDs, mental health, and brain health. Such an approach aims to provide more comprehensive care and intervention strategies. The economic implications of dementia are substantial, with annual global costs estimated at US$1.3 trillion, underscoring the significant dividends that investments in risk reduction could yield.

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Can dementia risk be lowered by addressing lifestyle factors?

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