The World Health Organization (WHO) has released updated guidelines emphasizing the importance of modifiable lifestyle and environmental factors in preventing dementia.

The report highlights that up to 45% of dementia cases could be prevented by addressing risk factors such as air pollution, obesity, diabetes, hypertension, and hearing loss.Key recommendations include adopting a healthy diet (e.g.

, Mediterranean or DASH diets), regular physical activity, managing chronic conditions like type 2 diabetes and hypertension, and reducing exposure to environmental pollutants like PM2.5.The guidelines also stress the role of social engagement, cognitive stimulation, and adequate sleep in maintaining brain health.

A study cited in the report showed that a multidomain intervention combining exercise, dietary advice, and social activities significantly improved cognitive outcomes in at-risk older adults.

Experts note that while the evidence for some factors like sleep quality is still emerging, the overall consensus remains strong on lifestyle modifications as the most effective preventive measures.The WHO underscores the need for personalized, community-based approaches to address dementia risk factors before symptoms appear.