Scientizing Everyday Life, Rationalizing Eating Habits: The Rise of Nutrition Science in 1910s-1920s Japan

Historians of science have noted that modern nation-states and capitalism necessitated the systematic creation and implementation of a wide array of knowledge and technologies to produce a more productive and robust population. Commonly labeled as biopolitical practices in Foucauldian sense, such endeavors have often been discussed in the realms of public hygiene, housing, birth control, and child mortality, among others. This article is an attempt to extend the scope of the discussion by exploring a relatively understudied domain of nutrition science as a critical case of social engineering and intervention, specifically during and after World War I in the case of Japan. Research and dissemination of knowledge on food and health in Japan, like other industrializing nation-states, centered on new public hygiene initiatives since the late nineteenth-century. However, in the aftermath of WWI, or more precisely, after the Rice Riots of 1918, a new trend began to dominate the discourse of nutrition and health. In the face of wartime inflation and the resultant nation-wide riots, physicians and social scientists alike began to view the food choice and budget issue as a solution to the middle class crisis. This new perception drew on the conceptual framework to understand food, metabolism, and cost in the language of quantifiable nutrition vis-à-vis monetary values. By analyzing how specific nutritional knowledge was translated into the tenets for public campaigns to reform everyday life, this paper ultimately sheds light on the institutionalization of a new area of research, nutrition (eiyō) in Japan