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Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.
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.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.