special subjects
Nitrous Oxide
Introduction
Nitrous oxide (laughing gas) is used as an anesthetic. It is also used as a propellant in cans and dispensers of whipped cream. Nitrous oxide is sometimes abused because it produces a sense of euphoria and a pleasant dreamlike state. Prolonged exposure to nitrous oxide can cause Vitamin B12 Deficiency , which leads to numbness and weakness in the legs and arms, which can be permanent. Nitrous oxide–filled balloons are illicitly sold and used at rock concerts and athletic events. 