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People tend to relax as they get older, and most people sit more. Each extra hour of sitting increases the odds that they won't be able to get out of bed or do other daily activities.

The agency that runs Medicare said it doesn't plan to review the billings of doctors who almost always charge for the most expensive visits because it isn't cost-effective to do so.

Despite a call from some to boycott the GOP's newest Benghazi probe, Minority Leader Nancy Pelosi and other Democrats aren't going that far — yet.

The number of tuberculosis cases is far higher than previously thought. And Ebola is making some patients stay away from hospitals. Yet the mortality rate is dropping.

The Academy Awards are coming this month, and if you're still trying to see all the nominated films, it may be easier to find them in China than in the U.S. — if you don't mind the pirated versions.

Secretary of State John Kerry questioned the Israeli leader's "judgment" on talks with Iran. Earlier, National Security Adviser Susan Rice said Netanyahu's address to Congress was hurting relations.

The Affordable Care Act created insurance subsidies that are under legal challenge. The Supreme Court will hear arguments in 2015 and could rule against a key provision of the law.

The Senate's "torture report" finds that the CIA conducted brutal interrogations of detainees in the years after 9/11, misled elected leaders, and got little useful information from the harsh tactics.

Medicare is giving hospitals financial incentives to provide better care. But so far about half of the hospitals that got incentive payments found them canceled out by other quality programs.

Detox diets are a hot trend, but scientists say there's really no evidence that they are necessary or helpful. One strategy that does make sense: Cut back on sugar. We tell you why.