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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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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

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Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.

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Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

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The top 10 most important tips that will help you grow old gracefully include (1) quit smoking, (2) keep your weight down, (3) take supplements, (4) skip a meal each day or fast 1 day per week, (5) get a pet, (6) get medical help for chronic pain, (7) walk regularly, (8) reduce arguments, (9) put live plants in your living space, and (10) do some weight training.

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