Some 2.3 million U.S. adults over 65 — more than 4% — have a diagnosis of dementia. But even without a diagnosis, a certain amount of cognitive decline is normal as age sets in. Whether it’s due to ...

Have you ever noticed that simply imagining something positive happening in the future can instantly brighten your mood? Thinking about an upcoming vacation or an event you’re really excited about?

You've seen it on T-shirts, Instagram captions, and coffee mugs: "Good vibes only." But is it just a trendy phrase or is there real science behind the power of positive thinking? As it turns out, ...