How many new dementia cases are diagnosed each year worldwide?

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Approximately 10 Million New Dementia Cases Diagnosed Annually Worldwide

Globally, nearly 10 million individuals are diagnosed with dementia each year. The World Health Organisation (WHO) indicates that a significant portion, up to 45 per cent, of dementia risk is preventable or can be delayed by addressing modifiable risk factors. Dementia, a condition affecting memory and cognitive functions due to brain diseases, ranks as the seventh leading cause of death and a primary contributor to disability and dependency in older adults.
Modifiable Risk Factors Identified

The WHO highlights that tobacco use, alcohol consumption, social isolation, physical inactivity, and air pollution are key modifiable risk factors contributing to dementia. Additionally, noncommunicable diseases (NCDs) such as high blood pressure and diabetes are also implicated. These factors collectively account for a substantial percentage of dementia risks, suggesting a strong link between lifestyle and environmental influences and the onset of the condition.
Global Prevalence and Impact

Currently, over 57 million people are living with dementia worldwide. Alzheimer's disease represents the most common form, estimated to be responsible for 60 to 70 per cent of all dementia cases. The impact of dementia extends beyond health, affecting the dignity, independence, and overall well-being of individuals, families, and communities, presenting profound challenges.
Prevention as a Key Strategy

Given the absence of a cure or widely accessible treatment for dementia, the WHO emphasises prevention as the most effective strategy to mitigate its growing prevalence. Updated guidance from the organisation provides health workers and policymakers with evidence-based recommendations to reduce the burden of dementia. These guidelines aim to promote early awareness and intervention, recognising that while dementia is more common after age 65, it is not an unavoidable consequence of ageing.

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