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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
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.
According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
Vaccines prevent between 2.5 and 4 million deaths every year.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.