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WHO Unveils Key Strategies to Combat Cognitive Decline
15 Jul
Summary
- New WHO guidelines emphasize social connection and cognitive activities.
- Hearing aids, cleaner air linked to preventing cognitive impairment.
- Smoking and alcohol increase dementia risk, supplements show little effect.

The World Health Organization (WHO) has updated its guidelines for preventing dementia and cognitive decline, emphasizing lifestyle factors individuals can influence. Up to 45% of dementia risk is considered modifiable.
The latest recommendations explicitly advocate for maintaining social connections and engaging in cognitively stimulating activities, such as reading, storytelling, and playing games. This marks a shift from the WHO's 2019 stance, where scientific evidence for social interaction's impact was deemed insufficient.
Furthermore, the WHO now recognizes clear evidence that hearing aids can help prevent cognitive impairment in individuals with hearing loss. Positive effects are also noted from improved air quality and reduced exposure to fine particulate pollution.
Physical activity is recommended for both dementia prevention and for those already living with the condition. However, the WHO remains cautious about supplements like vitamins and omega-3 capsules, citing insufficient evidence of their preventive benefits when no deficiency exists.
Conversely, the organization reiterates that smoking and drinking alcohol significantly increase dementia risk. High blood pressure, diabetes, obesity, sleep disorders, and depression are also identified as medical conditions that heighten risk.