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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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Thyroid conditions may make getting pregnant impossible.
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Multiple sclerosis is a condition wherein the body's nervous system is weakened by an autoimmune reaction that attacks the myelin sheaths of neurons.
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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.
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There are approximately 3 million unintended pregnancies in the United States each year.