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People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.
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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
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There are approximately 3 million unintended pregnancies in the United States each year.
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The average adult has about 21 square feet of skin.
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Vaccines prevent between 2.5 and 4 million deaths every year.