Claim: Did a Yale study find that brain health can improve in nearly half of adults over 65?

The claim is true; a Yale study found that nearly half of adults over 65 experienced improvements in brain health. This finding is supported by multiple reputable sources, including ScienceDaily and the Yale School of Public Health. However, some may dispute the interpretation of the results, suggesting that improvements are not universally applicable to all older adults. Overall, the evidence strongly supports the claim that brain health can improve in this demographic. The models diverge sharply — treat this as higher-uncertainty. Perplexity comes in highest (95%), while Gemini is lowest (50%). OpenAI expresses higher confidence than Gemini on this claim. While the evidence from the Yale study indicates that 45% of older adults improved in cognitive or physical functions, some critics might argue that these findings do not account for all individuals within this age group. They may point out that the improvements are linked to positive beliefs about aging, which could vary significantly among individuals. However, this does not undermine the overall findings of the study, which still show a significant percentage of improvement among participants.