Brett Arends’s ROI: Two breakthroughs on dementia — one that’s useful right now

Six million among us have full-blown Alzheimer’s disease, including 10% of those over 65 and half of everyone over 80.

And many more have other types of dementia, or cognitive impairment typically associated with age. Actor Bruce Willis, a mere 68 years young, is the latest heartbreaking example in the public eye.

So when it comes to dementia…