Walking May Delay Alzheimer’s Onset by Years. Here’s How Many Steps to Aim For.

Few realities of aging are scarier than the possibility that you might someday be diagnosed with dementia. Such fears are well-founded. More than 7 million Americans have Alzheimer’s disease, according to the Alzheimer’s Association. By 2050, that number is expected to nearly double to 13 million. Anything a person can do to avoid or slow cognitive decline is worth considering.