The Surprising Risk Factor for Dementia That Has Nothing to Do With Diet or Exercise

Caring for your brain can be a bit of a black box. After all, even medical researchers aren’t sure why some people make it to old age with their memory and thinking intact while others don’t. What we’ve long known is that engaging in healthy habits for the rest of your body—like eating a bunch of plants, getting quality sleep, and staying active—is good for your mind. But now, science suggests another daily practice that may help you ward off dementia: tending to your teeth and gums