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As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.
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.
Asthma cases in Americans are about 75% higher today than they were in 1980.
In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.