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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
There are more bacteria in your mouth than there are people in the world.
HIV testing reach is still limited. An estimated 40% of people with HIV (more than 14 million) remain undiagnosed and do not know their infection status.
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.
Approximately 500,000 babies are born each year in the United States to teenage mothers.