Fasting Triggers the Metabolic Switch

Fat is destroying your organs! The Longevity Scientist Dr Rhonda Patrick explains what actually burns it.

Dr. Rhonda Patrick is a Ph.D. biomedical scientist specialising in ageing, nutrition, and disease prevention. She is the founder of FoundMyFitness, a popular YouTube channel and podcast dedicated to translating complex health science into actionable advice.

She explains:

◼ Why visceral fat acts like a toxic organ that doubles your risk of early death

◼ How 2 weeks of poor sleep increased visceral fat by 11% without gaining a pound

◼ The 3 chemicals hiding in everyday plastic that are crashing testosterone levels

◼ Her personal intermittent fasting protocol and the "metabolic switch" that burns belly fat

◼ Why the current exercise guidelines are wrong and what the science actually shows

00:00 Intro

00:02:26 Why Visceral Fat Is More Dangerous Than You Think

00:08:07 The Real Reason Your Cravings Won’t Stop (It’s Not Willpower)

00:14:03 What Happens to Your Body When You Don’t Sleep Enough

00:19:58 The Hidden Habits Quietly Increasing Your Visceral Fat

00:21:29 How to Reverse Insulin Resistance Before It’s Too Late

00:25:21 Intermittent Fasting: What Actually Happens Inside Your Body

00:29:48 Why Your Body Repairs Itself When You Stop Eating

00:30:45 Fasted Training: Does It Burn More Fat or Backfire?

00:35:24 Why Belly Fat Spikes During Perimenopause

00:41:55 3 Hormone-Disrupting Chemicals You’re Exposed to Daily

00:49:37 How to Actually Avoid Toxins in Your Everyday Life

00:57:24 Are Microplastics Leaking Into Your Food Right Now?

00:59:20 The Safest Way to Store Condiments 

01:00:59 Which Kitchen Utensils Are Secretly Harming You?

01:03:06 Why Your Blender Might Be Contaminating Your Food

01:08:46 Inside Steve’s Supplement Stack

01:12:00 Do Multivitamins Really Extend Your Life?

01:12:48 Are Men’s Multivitamins Worth It—or Misleading?

01:14:39 How to Tell If Your Multivitamin Is Actually Good

01:20:27 Creatine: The Supplement That Does More Than Build Muscle

01:30:53 Curcumin: The Anti-Inflammatory Compound Backed by Science

01:33:30 The Molecule That Could Help Your Cells Stay Younger

01:41:16 Exogenous Ketones: Shortcut to Energy

01:47:59 What Is “Peakspan” and Why Should You Care?

01:54:50 How to Extend Your Peak Years (Not Just Your Lifespan)

02:00:42 How AI Could Be Rewiring Your Ability to Think

02:10:35 Why Current Exercise Guidelines Might Be Failing You

02:23:47 GLP-1 Drugs: Miracle Weight Loss or Hidden Risks?

Enjoyed the episode? Share this link and earn points for every referral - redeem them for exclusive prizes: https://doac-perks.com 

Independent Research Document: https://stevenbartlett.com/wp-content/uploads/2026/03/DOAC-Dr-Rhonda-Patrick-2026-Independent-Research-Further-Reading.pdf

Follow Dr Rhonda: 

Instagram - https://link.thediaryofaceo.com/B51VVNS 

X - https://link.thediaryofaceo.com/BZD8DMW 

YouTube - https://link.thediaryofaceo.com/CnuZdXT

Health Newsletter - https://link.thediaryofaceo.com/72VO9Ea 

You can download Rhonda's free protocol guides, here: 

The Cognitive Enhancement Blueprint - https://link.thediaryofaceo.com/7GoLoul 

The Omega-3 Supplementation Guide - https://link.thediaryofaceo.com/DudfUef 

How to Train According to the Experts - https://link.thediaryofaceo.com/G3gvLtG 

The Diary Of A CEO:

◼ Join DOAC circle here - https://doaccircle.com/ 

◼ The 1% Diary is back - limited time only: https://bit.ly/3YFbJbt 

◼ The Diary Of A CEO Conversation Cards (Second Edition): https://g2ul0.app.link/f31dsUttKKb 

◼ Follow Steven - https://g2ul0.app.link/gnGqL4IsKKb 

Sponsors:

Cometeer - https://cometeer.com/steven for $30 off your first order *Steven is an investor in this business

LinkedIn Marketing - https://www.linkedin.com/DIARY 

Saily - Download from the app store and use code DOAC at checkout for 15% off. For more details: https://saily.com/DOAC ⛵

Ketone - https://ketone.com/STEVEN for 30% off your subscription order