ABSTRACT
Various terms have been used to describe the hypersensitivity of the human body in response to contact with extremely small quantities of ambient chemicals. The designation currently most often used worldwide is chemical sensitivity (CS). The American pediatrician T. G. Randolph introduced this name around 1970, and it has been used since then. According to Randolph [1], a CS develops from an inter twining of three factors: (1) allergy, (2) nutrition, and (3) intoxication. According to a 2012 report by Bell and colleagues [2], CS affects about 5% of the US population. An examination of the Japanese population in 2000 showed that approximately 700,000 people out of about 120 million overall population are affected.
