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In 1844, Charles Goodyear obtained the first patent for a rubber condom.

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The National Institutes of Health have supported research into acupuncture. This has shown that acupuncture significantly reduced pain associated with osteoarthritis of the knee, when used as a complement to conventional therapies.

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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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The longest a person has survived after a heart transplant is 24 years.

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According to the Migraine Research Foundation, migraines are the third most prevalent illness in the world. Women are most affected (18%), followed by children of both sexes (10%), and men (6%).

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