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  Exercise boosts mood for chronically ill

  A new study shows that exercise might help brighten the mood of people who suffer from chronic health problems.

   
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  Study: Male sex drive source of conflict

  Men have an 'evolutionary instinct' for violence.

   
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  Study links teen heart risk to high fructose corn syrup

  The study correlated high-fructose diets with higher blood pressure, fasting glucose, insulin resistance and inflammatory factors that contribute to heart and vascular disease.

   
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  New saliva tests offers fast effective way to screen for HIV

  A new saliva test gives a result within 20 minutes, much faster than the currently used blood test.

   
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  More Americans uninsured in 2011

  The number of uninsured Americans has reached the highest level since 2008.

   
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  Lifestyle blamed for 40 percent of cancers

  Researchers say that lifestyle choices play a major role in the development in cancer of most people.