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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Medication errors are three times higher among children and infants than with adults.