Speed Training May Cut Dementia Risk by 25%, Study Says—But Caution Emphasized
A large randomized trial of over 2,800 seniors found that a speed-based brain-training program, delivered in under 24 hours total, was associated with a 25% lower risk of developing dementia over 20 years based on Medicare records, while two other training types showed no significant effect; researchers call it a gold-standard study but note wide margins of error and several limitations that limit generalizability, signaling the need for further research.
