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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.
Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.
Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.
Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.