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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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There are more bacteria in your mouth than there are people in the world.

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Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.

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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

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When intravenous medications are involved in adverse drug events, their harmful effects may occur more rapidly, and be more severe than errors with oral medications. This is due to the direct administration into the bloodstream.

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Video: Hormones and the menstrual cycle Animation

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