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More than nineteen million Americans carry the factor V gene that causes blood clots, pulmonary embolism, and heart disease.
Once thought to have neurofibromatosis, Joseph Merrick (also known as "the elephant man") is now, in retrospect, thought by clinical experts to have had Proteus syndrome. This endocrine disease causes continued and abnormal growth of the bones, muscles, skin, and so on and can become completely debilitating with severe deformities occurring anywhere on the body.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
The longest a person has survived after a heart transplant is 24 years.
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.