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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The people with the highest levels of LDL are Mexican American males and non-Hispanic black females.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.