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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
People about to have surgery must tell their health care providers about all supplements they take.
The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
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.
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.