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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.

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Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.

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Increased intake of vitamin D has been shown to reduce fractures up to 25% in older people.

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Pink eye is a term that refers to conjunctivitis, which is inflammation of the thin, clear membrane (conjunctiva) over the white part of the eye (sclera). It may be triggered by a virus, bacteria, or foreign body in the eye. Antibiotic eye drops alleviate bacterial conjunctivitis, and antihistamine allergy pills or eye drops help control allergic conjunctivitis symptoms.

Routes for the human colonization of the New World and Pacific islands. Routes for the human colonization of the New World and Pacific islands.
The Human Visual Cortex The Human Visual Cortex
Human reproduction Human reproduction
Annotation of a DNA sequence containing part of the human beta-globin gene Annotation of a DNA sequence containing part of the human beta-globin gene
Plot showing the number of genes on each human chromosome Plot showing the number of genes on each human chromosome
Human urinary system Human urinary system
Video: Structures that affect circulation - heart and MABP

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