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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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.
The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.
Less than one of every three adults with high LDL cholesterol has the condition under control. Only 48.1% with the condition are being treated for it.