Various scientists and philosophers have heavily criticized what they see as problematic forms of ‘nutritional reductionism’ or ‘nutritionism’ whereby studying food–health interactions at the level of isolated food components produces largely misguided science and misleading interpretations. However, the exact target of these diverse criticisms remains elusive, and its implications are overstated, which may hinder scientific understanding. To better identify the types of flaws supposedly hindering reductionist research, we disentangle three types of reductionist claims to better determine what the debate (...) is about and to propose ways to move it forward. We then present a qualified defence of the reductionist programme that hinges on the ability to identify nutritional causes that make a difference, which we illustrate through central examples in the history of nutrition. This defence is taken further by using insights from the philosophy of mechanisms to analyse how the field of nutritional ecology offers a synthetic framework to explain, generate, and test predictions about nutrient–organism interactions, which is premised on the biological mechanisms of nutrient-specific appetite regulation. The result, which we call ‘synthetic reductionism’, avoids many, though perhaps not all, of the challenges raised by anti-reductionists, and also highlights the potential of reductionism to identify nutritional difference makers. (shrink)

Public health advocates, government agencies, and commercial organizations increasingly use nutritional science to guide food choice and diet as a way of promoting health, preventing disease, or marketing products. We argue that in many instances such references to nutritional science can be characterized as nutritional scientism. We examine three manifestations of nutritional scientism: the simplification of complex science to increase the persuasiveness of dietary guidance, superficial and honorific references to science in order to justify cultural or ideological views about food (...) and health, and the presumption that nutrition is the primary value of food. This paper examines these forms of nutritional scientism in the context of biopolitics to address bioethical concerns related to the misuse of scientific evidence to make claims regarding the effect of diet on health. We argue that nutritional scientism has ethical implications for individual responsibility and freedom, concerning iatrogenic harm, and for well-being. (shrink)

Aristotle defines growing as a process in which an individual living being persists as it accumulates new matter. This definition raises the question of what enables an individual to persist as its material composition continuously changes over time. This paper provides a systematic account of Pietro Pomponazzi’s answer to this question. In his De nutritione et augmentatione, Pomponazzi argues that individuals persist in virtue of their forms. Forms are individuated in part by their material, causal, and temporal origins, which commits (...) Pomponazzi to the view that individuals necessarily have the material, causal, and temporal origins they do. I provide an account of why Pomponazzi held this view. While his opponents remain unnamed, I argue that his arguments for this view are best read as addressing, among others, Paul of Venice and Gregory of Rimini. (shrink)