Full Show Notes: bengreenfieldlife.com/hungercode
On this episode, I got to geek out with Dr. Jason Fung and unravel why calorie counting alone doesn’t explain our weight struggles. Dr. Fung used jaw-dropping stats—like nearly identical calorie consumption between nations with wildly different obesity rates—to illustrate how hormones, digestion, and even the microbiome play a much bigger role than just numbers.
We also broke down the three types of hunger—homeostatic, hedonic, and conditioned—and explored how ultra-processed foods hijack our biology. Dr. Fung shared that ditching those foods is his top strategy for conquering hunger, while I revealed how staying busy and using GLP-1s can help curb appetite during fasting or travel.
Dr. Jason Fung is a physician (kidney specialist), researcher and New York Times best-selling author currently practicing in Toronto, Canada. trained in Los Angeles and Toronto and currently practices as a nephrologist (kidney specialist). His books, including The Obesity Code, The Complete Guide to Fasting, The Diabetes Code and The Cancer Code have challenged conventional thinking about these diseases, and introduces dietary strategies to manage them.
Episode Sponsors:
LVLUP Health: I trust and recommend LVLUP Health for your peptide needs as they third-party test every single batch of their peptides to ensure you’re getting exactly what you pay for and the results you’re after! Head over to lvluphealth.com/BGL and use code BEN15 for a special discount on their game-changing range of products.
Truvaga: Balance your nervous system naturally with Truvaga's vagus nerve stimulator. Visit Truvaga.com/Greenfield and use code GREENFIELD30 to save $30 off any Truvaga device. Calm your mind, focus better, and recover faster in just two minutes.
Quantum Upgrade: Recent research has revealed that the Quantum Upgrade was able to increase ATP production by a jaw-dropping 20–25% in human cells. Unlock a 15-day free trial with the code BEN15 at quantumupgrade.io.
Formula IQ: Recuperate IQ by Formula IQ is a comprehensive copper supplement designed to support mitochondrial energy, iron balance, and metabolic health by pairing bioavailable copper with essential cofactors your body needs for proper utilization, which is especially crucial if you've been under chronic stress or supplementing with high-dose zinc. Try it at formulaiq.com and use code BEN for 10% off.

Does It Really Matter How HOT Your Sauna Gets, Should You Use Your Phone In A Sauna, What Kind of Sauna Ben Greenfield Uses & More With Connie Zack
58:26

Are We Just *Modern Zoo Animals*? The Ancestral Mismatch (Part 3)
08:04

Why You Need FAR Less Carbs Than You Think (Especially During Exercise) & Ketones As An "Alternate Fuel", With Dr. Andrew Koutnik - Part 2
1:00:40