L. Deslandes' "A Treatise on the Diseases Produced By Onanism, Masturbation, Self-Pollution, and Other Excesses" navigates the often-taboo terrain of sexual health from a 19th-century perspective. This critical work interlaces medical insights with moral discourse, reflecting Victorian anxieties surrounding sexuality and its correlation to physical and mental health. Deslandes employs a didactic style rife with historical references and empirical observations, aimed at elucidating the physical maladies attributed to sexual excesses—a topic largely neglected in earlier medical literature. His systematic approach foreshadows contemporary discussions on the psychosomatic connections between behavior and health, while also exposing the sociocultural implications of his era's sexual mores. L. Deslandes, a physician influenced by the prevailing moral philosophy of his time, sought to address the rampant misconceptions surrounding masturbation and other sexual practices, which were often vilified as detrimental to health. His academic background and a conscious effort to intertwine medical science with ethical considerations undoubtedly shaped his examination of sexual behavior. By compiling various case studies and theoretical reflections, Deslandes endeavors to inform and issue warnings grounded in both clinical observation and societal norms. This treatise serves not only as a historical document but also as a compelling read for contemporary audiences interested in the evolution of sexual health discourse. Deslandes' earnest analysis invites readers to reflect on the historical context of sexual practices while challenging modern perceptions of self-pleasure. For scholars, healthcare professionals, and lay readers alike, this work is invaluable in understanding the complexities surrounding sexuality and its perceived repercussions.