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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.
The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.