XMRV, a mouse virus, may be an artifact of laboratory experiments rather than the cause of chronic fatigue syndrome. Whittemore Peterson Institute hide caption

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Whittemore Peterson Institute

A Washington man talking on his cellphone may be taking a health risk, according to an analysis from the World Health Organization that finds a possible risk of cancer from exposure to the devices. Nicholas Kamm/AFP/Getty Images hide caption

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Nicholas Kamm/AFP/Getty Images

Cellphone Use May Be A Cancer Risk After All

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Study: Boosting Good Cholesterol With Niacin Did Not Cut Heart Risks

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Being overweight or obese is a big risk factor for hypertension. iStockphoto.com hide caption

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iStockphoto.com

Nearly 1 In 5 Young Adults Has High Blood Pressure

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A study found that women's bones didn't benefit from consuming more than 750 milligrams of calcium a day. Justin Sullivan/Getty Images hide caption

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Justin Sullivan/Getty Images

Extra Calcium May Not Do Older Women Much Good

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Actor Jessica Alba, accompanied by Sen. Frank Lautenberg (D-NJ), reacts when a buzzer calling for a vote goes off during a news conference on Capitol Hill Tuesday about chemical regulation. Evan Vucci/AP hide caption

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Evan Vucci/AP

CDC Has Tips For 'Zombie Apocalypse' And Other Disasters

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