This is my master’s thesis. Below you will find my abstract and beneath that an image of one of the woodblock prints, the male (inshoku, or diet) version. So, if it gets too boring, just scroll down to the picture!
By the period of the Bakumatsu, 1850s Japan, two woodblock prints had published and circulated within the world of ukiyo-e. While the prints appear pictorially beautiful and aesthetically call the attention of any reader to look closer, the prints lie shrouded in the mystery. The Inshoku yôjô kagami and, its counterpart, the Bôji yôjô kagami taught and instructed their readers in the cultivation life related to diet and sex. However, rather than functioning as simple visual splendor or as academic reference, these prints transcend the traditional demarcations of serious and satirical, private and public, and explicit and implicit. The Yôjô kagami prints are unique in their approach to the edification of the individual. In fact, on first sight, the prints appear to be more for visual pleasure and then satire than for use as informative woodblock prints. Unraveling the mystery that the prints have left behind for over a hundred years requires a visual, textual, and comparative study of the prints. Ultimately, the Yôjô kagami prints provide the reader with a rare multifaceted approach to cultivating life and their ability to do so lies in the unpacking of their mysteries and wonders.
here’s the image, click to view a larger version:

the Inshoku yôjô kagami or “The Model to the Cultivation of Life through Diet,” as I translate it, provides Kanpô knowledge, or Chinese medical knowledge, surrounding the image and internally has organs and their respective workers for display… [this image is copyright of Nichibunken, which possesses the original from which this print was digitized]