A study finds that people who did one specific form of brain training in the 1990s were less likely to be diagnosed with dementia over the next 20 years.

A study in the Alzheimer's Association research journal found that simple brain speed exercises were linked to lowering the risk of dementia by 26% at a 20-year follow-up.

If you aren’t a professional athlete, it is highly unlikely that you train for speed in your gym, or on the treadmill. On the latter, while there is a number that records how fast you’re ...