In this second part of their conversation, Gary Taubes focuses on how bad science and entrenched belief systems distort nutrition research. He argues that dominant ideas—like energy balance—persist not because they are well-tested, but because careers, institutions, and funding structures are built around them. This leads to publication bias, resistance to contradictory evidence, and a tendency to ignore or reinterpret data that doesn’t fit the prevailing model.

Taubes critiques the modern emphasis on “hyperpalatable” foods, arguing it reintroduces a behavioral explanation (overeating, willpower) under more technical language. Instead, he maintains that fat accumulation is hormonally regulated—primarily by insulin—and that food composition, not just calories or taste, drives metabolic outcomes. Similarly, he challenges common interpretations of GLP-1 drugs, suggesting their effects may be misunderstood due to the same calorie-centric framework.

Throughout, the discussion returns to a core theme: good science requires testing competing hypotheses, not reinforcing a single narrative. Taubes argues that many unanswered questions in obesity and metabolism persist not because they are unanswerable, but because the scientific system is not structured to ask them.