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There are over 65,000 known species of protozoa. About 10,000 species are parasitic.

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There are approximately 3 million unintended pregnancies in the United States each year.

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Women are two-thirds more likely than men to develop irritable bowel syndrome. This may be attributable to hormonal changes related to their menstrual cycles.

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More than 4.4billion prescriptions were dispensed within the United States in 2016.

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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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