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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
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.
Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.
As the western states of America were settled, pioneers often had to drink rancid water from ponds and other sources. This often resulted in chronic diarrhea, causing many cases of dehydration and death that could have been avoided if clean water had been available.
![(A) Figure illustrating the location and appearance of a peptic ulcer in both the stomach and the du](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_09_46_8476830.jpeg)
![The cranium of a young infant changes dramatically in shape with age. Initially the child has severa](https://biology-forums.com/gallery/47/medium_273688_23_02_15_8_21_31_209031597.jpeg)