Home / Health / Optimism May Cut Dementia Risk by 15%
Optimism May Cut Dementia Risk by 15%
8 Apr
Summary
- Higher optimism tied to 15% lower dementia risk per point.
- Optimism reduces stress hormones and brain inflammation.
- Purpose and engagement crucial for older adults' brain health.

Living more optimistically has been linked to a healthier life and a reduced risk of developing dementia. Researchers found that higher levels of optimism were associated with a 15 percent lower risk of dementia for each point increase on an optimism scale. This protective effect is thought to be due to optimism's ability to lower stress hormones like cortisol and reduce harmful inflammation in the brain, both of which are implicated in dementia development.
The study, which followed over 9,000 adults aged 50 and older from 2006 to 2020, observed that participants with greater optimism were less likely to develop dementia. Beyond optimism, experts emphasize the importance of purpose and engagement for older adults, particularly those over 65 who are at higher risk. Staying actively involved in meaningful activities and addressing health concerns are considered crucial for supporting healthy aging and cognitive function.