A study finds combat soldiers who were heavy users of energy drinks were more likely to sleep less than four hours a night. But is the popularity of the drinks contributing to sleeplessness or just a reflection of it?
Exit polls and a separate survey of cellphone users show similarities between Obama voters and people who tap their mobile devices to get health information. Latinos, African-Americans and young people were big in both groups.
Despite intensified efforts to vaccinate kids in Nigeria, polio cases are on the rise there. It's one of the last places in the world where polio is endemic. Most cases are popping up in a few communities that are now the prime targets for public health workers.
After the election, many conservatives are pondering their losses. Some say their anti-abortion principles weren't the problem; it was the Republican Party's failure to run a truly conservative candidate. They're vowing to change the party and continue their fight to restrict abortion.
With President Obama's re-election, states that had postponed creating health insurance exchanges required by the sweeping federal health law will now have to scramble to set them up. These marketplaces are supposed to make it easier for people to shop for health coverage.
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