A sad reflection on the global food sector and the science (for what it is worth) of diet is the number of books pumped out claiming to “reveal the truth.” The truth is that nothing about food is incontrovertibly proven and all is distorted by governments, corporations, and individuals acting on self interest. My rant arises from the fact that I read way too many books offering solutions and advice; most of them, these days, get short thrift from me. But “Metabolical: The Truth About Processed Food and How It Poisons People and the Planet“,” by American doctor and activist and prolific writer Robert Lustig, strikes me as scientific as can be. Essentially, Lustig’s thesis (one echoed by many these days) is that the ultra-processed carbohydrates fed to us by the modern food system mess with our evolutionary bodies to our peril. Processed foods lead to all the modern health epidemics. Lustig takes care to not point the finger at obesity (according to him, some technically obese people do not need to lose weight, while some technically thin people dice with dietary death). He slams governments, the health profession, medicine, pharma, agriculture, and, of course, the food “manufacturers.” His answer is twofold: “protect the liver” and “feed the gut,” which he explains well but perhaps too briefly for the average reader (I am not sure I came away with clear notions on how to follow his rules). Overall, Metabolical is timely, well written, and an up-to-the-minute mix of science and polemic.