The Fasting Method Podcast · The Fasting Method

Why Calorie Counting Fails — and What Hunger Really Controls

·41 min·2 clips

Fung says the body has a "body fat thermostat" that insulin, cortisol, GLP-1, and sympathetic tone can move up or down.

Terry Lance and Dr. Jason Fung open on the idea that calories are not the whole story. They argue that the standard calories-in, calories-out model misses how the body reacts when intake drops. Hunger comes up early and stays at the center of the conversation. Fung says metabolic rate is not something people directly control, so eating less can lead the body to burn less as well. That means the math can look right on paper and still fall apart in practice. The episode keeps asking a different question: how does the body distribute those calories? Satiety signals become the next focus. A steak-and-salad meal is set against chocolate cake to show how different foods change the urge to keep eating and even what feels right for breakfast the next day. The hosts use that contrast to show that food is not just fuel. It is also a signal. Hormones enter the picture. They name peptide YY, cholecystokinin, and GLP-1 as part of the chain that tells the body to stop. Ozempic becomes the modern example. Fung describes it as a GLP-1 agonist that suppresses homeostatic hunger rather than simply forcing willpower. The discussion then turns to older ways of physically restricting calories. Jaw wiring, lap bands, and Roux-en-Y surgery all appear as examples of methods that limit intake without solving hunger. Those approaches, the hosts say, can work for a while and still break down later. They point to weight regain after surgery as evidence that hunger was never fully addressed. From there, the episode widens into the mismatch between high hunger and low intake. That mismatch is framed as a battle the body tends to win. The closing stretch turns to food addiction and the idea that some foods are built to be hard to moderate. The episode lands on abstinence, not shame, as the more honest answer when addiction is the real issue.

As heard by us

A blunt, appetite-first argument for why calorie math often falls short.

The episode pushes back on the usual calorie in, calories out story and keeps returning to a harder point: hunger, satiety, and the body’s tendency to slow down when intake drops. Terry Lance and Dr.

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If calorie math keeps failing, this conversation argues that hunger keeps rewriting the equation.

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