In September, a team of researchers made a well-publicized recommendation that people start eating… about as much red meat as they already eat. This was not based on any new medical findings, and was described by its authors as a “weak recommendation” with “low-certainty evidence.”
This new advice is part of a broader backlash against how nutritional research is conducted and communicated.
Obesity, like cancer, “is not one disease,” says Elizabeth Mayer-Davis, a professor of nutrition and medicine at the University of North Carolina at Chapel Hill. In order to treat it, “you really have to be thinking about biology and behavior and society and culture and policy all at the same time. Because if you miss any one of those pieces, your intervention or your diet — it’s less likely to actually work.”