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Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).
Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.
Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
In most cases, kidneys can recover from almost complete loss of function, such as in acute kidney (renal) failure.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."