Anti-masturbation theory of disease, 19th-century illustration. Teenager in poor health, with a claim that his conditions are caused by habitual masturbation. At the time, such illustrations were intended to warn youths against the supposedly deadly perils of such practices, also known as onanism and considered a form of self-abuse. Though the subject can be taboo, masturbation does not cause any of the illnesses alleged in such publications. Published in 'La Vie Normale et la Sante' (Normal Life and Health, Paris, 1881) by Dr Jules Rengade.