In 'Plain Talks on Avoided Subjects,' Henry N. Guernsey delves into the often taboo topic of human sexuality with an urgent didactic purpose, addressing the lack of knowledge among youth about the consequences of premarital sex. With the precision of a seasoned medical professional, Guernsey heralds a clear, cautionary message against the practices that he deems harmful to the future sexual and reproductive health of adolescents. His prose, is both clinical and accessible, merging the discourse of Victorian medical literature with a moral pedagogy aimed at the lay reader. Set in a time when such subjects were shrouded in mystery and misinformation, this book emerges as a pivotal social document in the context of 19th-century sexual education.nHenry N. Guernsey's trajectory as an esteemed practitioner in the field of Gynaecology, coupled with his years of observation and interaction with young patients, catalyzed the creation of this conscientious manual. His insights are shaped by the empirical evidence and personal testimonies encountered throughout his dedicated career. Indeed, Guernsey's commitment to his profession and his genuine concern for the well-being of younger generations are evident in every page, advocating for informed decision-making supported by scientific understanding.nFor scholars of medical history, social historians, and readers with an interest in the evolution of sexual education, 'Plain Talks on Avoided Subjects' is a profound examination of Victorian mores and medical ethics. Guernsey's work not only offers a glimpse into the concerns of a bygone era but also provides a foundational perspective on the ongoing dialogue around youth, sexuality, and health. This treatise is recommended for those seeking to understand the roots of contemporary discourses on sexual well-being and the changing tides of medical advice to the public.