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Most Americans lack vitamin D Dec. 2: A new study finds that most Americans do not get enough vitamin D. NBC chief medical editor Dr. Nancy Snyderman talks to TODAY’s Ann Curry about what this deficiency can mean for your health. |
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Probiotics: More hype than help? Americans are gulping down probiotic-infused foods that promise to treat everything from bad cholesterol and high blood pressure, but are probiotics more hype than help ? |
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