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There are more sensory neurons in the tongue than in any other part of the body.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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%).
About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.