More and more data are showing the connection between lifestyle and cognitive decline, Petersen stressed. "This series of articles underlines that," he said.
And people need to improve these lifestyle factors in middle age, he said.
"People should start paying attention now, regardless of your age or stage in life," he said. "It may be when you are in midlife, when you are in your 40s or 50s, what you do then with respect to your lifestyle -- your diet, your weight, your activity level -- may have a bigger impact on what's going to happen to you at age 70 and beyond than if you wait until you start getting a little forgetful or a little bit fuzzy."
The U.S. National Institute of Neurological Disorders and Stroke has more on dementia.
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