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Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.
Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
The longest a person has survived after a heart transplant is 24 years.
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
There can actually be a 25-hour time difference between certain locations in the world. The International Date Line passes between the islands of Samoa and American Samoa. It is not a straight line, but "zig-zags" around various island chains. Therefore, Samoa and nearby islands have one date, while American Samoa and nearby islands are one day behind. Daylight saving time is used in some islands, but not in others—further shifting the hours out of sync with natural time.

