Simon-André-David Tissot, famous practitioner of his time, was born in Waatlande, Switzerland, studied medicine in Geneva and Montpellier, and graduated MD in 1749.1 He settled in Lausanne where his time was divided between practice and writing. In 1766, Tissot rose to the professorship of medicine in the college. His medical monographs include discussions on smallpox and inoculation, epilepsy, nervous diseases, catalepsy and migraine, and bilious fevers. The English titles to his popular treatises, which held great appeal and were translated into several languages, are: On the Disorders of People of Fashion; On Diseases Incidental to Literary and Sedentary Persons; On Onanism: or, A Treatise Upon the Disorders Produced by Masturbation: or, The Effects of Secret and Excessive Venery; and a family medical guide, Advice to the People in General, with Regard to Their Health. In the discussion of diseases incidental to literary and sedentary persons, he mentioned the influence