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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.
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The familiar sounds of your heart are made by the heart's valves as they open and close.