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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.

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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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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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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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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.

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