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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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Alzheimer's disease affects only about 10% of people older than 65 years of age. Most forms of decreased mental function and dementia are caused by disuse (letting the mind get lazy).

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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.

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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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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

Major structures of the human brain. Major structures of the human brain.
Location of the major baroreceptors. Location of the major baroreceptors.
A plot of trophic diversity across the major groups of organisms shows highest trophic diversity amo A plot of trophic diversity across the major groups of organisms shows highest trophic diversity amo
Comparison of Major developmental theories Comparison of Major developmental theories
Hurricane Paths: Major Hurricane History Hurricane Paths: Major Hurricane History
An educational institution has total direct labor and material costs of $1964 per student. Its ... An educational institution has total direct labor and material costs of $1964 per student. Its ...
Video: Membrane transport proteins - pores, gated channels and pumps

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