What are the top modifiable risk factors for dementia identified by WHO?

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Up to 45 Per Cent of Dementia Risk is Preventable Through Modifiable Factors

The World Health Organisation (WHO) has identified several key modifiable risk factors that contribute to dementia, suggesting that up to 45 per cent of cases could be prevented or delayed. These factors encompass lifestyle choices and manageable health conditions, highlighting the significant potential for intervention. Globally, dementia affects over 57 million individuals, with nearly 10 million new diagnoses annually, underscoring the urgency of preventative strategies.
Lifestyle Choices Contribute Significantly to Dementia Risk

Factors such as tobacco use, excessive alcohol consumption, social isolation, and a lack of physical activity are identified as crucial modifiable risks for dementia. These lifestyle elements can negatively impact brain health over time. The WHO's updated guidance emphasizes that these are not inevitable aspects of ageing, even though dementia becomes more prevalent after the age of 65.
Noncommunicable Diseases Are Major Drivers of Dementia

Noncommunicable diseases (NCDs), including hypertension, diabetes, and high cholesterol, are also highlighted by the WHO as significant contributors to dementia risk. Effective management of these conditions is therefore a key strategy for reducing the likelihood of developing dementia. The organisation advocates for a more integrated approach to healthcare services, combining NCD management with mental health and brain health initiatives.
Prevention is the Most Effective Strategy Given Current Limitations

With no known cure for dementia and limited widely accessible treatments, the WHO strongly emphasises prevention as the most effective approach to lowering the global burden of the disease. This includes interventions such as cognitive stimulation and training for individuals experiencing mild cognitive impairment. The global economic cost of dementia is substantial, estimated at US$1.3 trillion annually, with a significant portion attributed to unpaid care.

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What are the top modifiable risk factors for dementia identified by WHO?

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