And O'Neill said there's evidence that the nation's seniors will be up to the challenge.
"Education is highly correlated with health in this country, and our levels of education have risen a lot with the baby boom," he said. "We have the best-educated cohorts of adults on the horizon. With education come good health-care decisions and an involvement in your own health care."
The U.S. National Institute on Aging has more about healthy aging.
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