New WHO guidelines suggest up to 45% of dementia cases are preventable. Tackling risk factors like high blood pressure and air pollution is advised. Healthy lifestyles and managing chronic diseases significantly influence brain health.
Source: [Times of India](https://timesofindia.indiatimes.com/india/long-term-exposure-to-air-pollution-could-lead-to-dementia-warns-who/articleshow/132450132.cms)