There's a growing body of evidence suggesting that compounds found in cocoa beans, called polyphenols, may help protect against heart disease. Philippe Huguen/AFP/Getty Images hide caption

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For all the good aspirin can do in preventing second heart attacks and strokes, taking it daily can boost some risks, too — of ulcers, for example, and of bleeding in the brain or gut. iStockphoto hide caption

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A daily cup of joe (or two) may help protect against Type 2 diabetes and cardiovascular disease. And an egg a day will not raise the risk of heart disease in healthy people, according to a panel of nutrition experts. Premshee Pillai/Flickr hide caption

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Tobacco smokers are more likely than nonsmokers to die from infection, kidney disease and, maybe, breast cancer. iStockphoto hide caption

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