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Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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.
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.