According to a new study, physical disabilities that limit mobility are increasing among middle-age Americans.  This could have serious long-term consequences for the U.S. health-care system.  Learn more in this article from Health Day.

Researchers from the Rand Corp., a nonprofit research group, analyzed data from the annual National Health Interview Survey, covering 1997 to 2007, and found that more than 40 percent of respondents 50 to 64 years old reported difficulty with at least one of nine physical functions.

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