The modern weight-loss debate has been missing an essential point, says nephrologist and best-selling author Dr. Jason Fung MD—that it’s more about managing hunger than cutting calories.
On “Vital Signs,” Fung explains how 600 calories of steak and eggs tell the body something entirely different than 600 calories of a sugary frappuccino. The difference, he says, lies in satiety hormones like GLP-1, GIP, peptide YY, and cholecystokinin—signals that ultra-processed foods are engineered to bypass. When those signals are blunted, people can keep eating long after their energy needs are met.
The conversation also dives into GLP-1 weight-loss drugs like semaglutide. While effective at suppressing appetite, Fung notes they don’t retrain eating habits or fix a food environment where eating is constant and socially reinforced. Once the medication stops, the old patterns often return.
His alternative? Rebuild structure. Limit ultra-processed foods. Create clear eating windows to allow the body time in fat-burning mode. And recognize that obesity isn’t a character flaw—it’s a hormonal and environmental trap.
If hunger is the real driver, Fung suggests, then decoding it may be the key to lasting change. This is the focus of “The Hunger Code”—the follow up to his best-selling title “The Obesity Code.”
Coming Soon: Find Hunger Code PART 2 with Dr. Fung here soon on breaking food addiction | Vital Signs
Description
Our health is the composite of our states of body, mind, and soul. Each of these domains influences the other, and can either nourish or deplete the others, depending on how we live our lives. Be it food to fight cancer, boosting virus immunity, or tips for better sleep, Vital Signs zooms in on the important matters of health that come up in everyday life—connecting the dots across the broad canvas of our “composite health.”
About the host
Brendon Fallon hosts “Vital Signs” and is a health correspondent and reporter for NTD. Prior to this he co-produced and presented current affairs shows for “The Epoch Times.” His deepest passion lies in sharing the journey to higher states of health – from fine tuning diet and lifestyle to better understanding our place and purpose in the world.
