A farmer holds cucumbers in a field in Malaga, Spain. Cucumbers from Spain have been eyed as the source of a disease outbreak in Germany. Jorge Guerrero/AFP/Getty Images hide caption

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

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Dr. David Gilder gives Sally Johnson a checkup at the Mallory Community Health Center in Tchula, Miss. Dave Anderson/Oxford American hide caption

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During a demonstration in Chicago, Jack Nugent (right), part of a group organized by Corporate Accountability International, urged a pedestrian to support his cause calling for McDonald's to retire Ronald McDonald in March 2010. Scott Olson/Getty Images hide caption

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Claims that strawberries and other foods rich in antioxidants can reduce inflammation and pain aren't backed up by much research. Menahem Kahana/AFP/Getty Images hide caption

itoggle caption Menahem Kahana/AFP/Getty Images