Brain health among older Americans appears to be getting better.

Compared to aging adults in the 1990s, people over 70 today may have a lower risk for serious memory problems, including Alzheimer’s and other forms of dementia, according to a new study that examined mental function among more than 14,000 people over a decade. While the reasons for the apparent decline aren’t known, the brain boost may be explained by the fact that older Americans today are better educated, wealthier and have improved cardiovascular health compared to similarly-aged adults in the 1990s.

“The study suggests that it’s important to keep your mind active, not just in formal education in early life, but with reading and talking with friends and staying connected with the world through volunteering and social networks,’’ said lead author Dr. Kenneth Langa, associate professor of internal medicine at the University of Michigan. “We think that’s part of the story of keeping your brain healthy and working against cognitive decline and dementia.’’

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