What are the six types of fasting and their benefits?

The video outlines six fasting modalities: intermittent fasting (12–16 hours), autophagy fasting (17–72 hours), gut reset fasting (24 hours), fat burner fasting (36 hours plus a 12-hour window), dopamine reset fasting (48 hours), and immune reset fasting (3 days). Each type targets different physiological goals from cellular cleanup to immune system rejuvenation. Timestamp: 125

How does fasting affect growth hormone and testosterone?

In the discussed framework, around 13–15 hours of fasting is associated with rising growth hormone and a significant rise in testosterone in men (reported as substantial increases). This is part of the metabolic switching that occurs during longer fasts. Timestamp: 585

What is autophagy and why is it important?

Autophagy is the cellular recycling process that kicks in during extended fasting, cleaning damaged components and improving cell function. It’s linked to improved viral defense and is supported by Nobel Prize-recognized science cited in the talk. Timestamp: 1269

What is the gut reset fast and what evidence supports it?

The gut reset fast references research from MIT showing 24 hours without food can stimulate intestinal stem cell activity and repair bias in the gut microbiome, which may improve mood and gut health. Timestamp: 2219

What is the fat burner fast and how does it affect weight loss?

The fat burner fast (36 hours fasting, then a 12-hour window) is described as unblocking belly fat loss by lowering blood sugar and triggering ketogenesis and autophagy, with efficacy shown in a 30-day protocol. Timestamp: 2317

What is the dopamine reset fast and how does it help cravings?

The dopamine reset fast (around 48 hours) is said to reboot the dopamine system, which can reduce sugar cravings and increase the pleasure derived from food with smaller portions when reintroduced. Timestamp: 2399

What is the immune reset fast and its relevance to chemo?

Immune reset fasting draws on Valter Longo’s work showing that three days of fasting during chemotherapy can rebuild white blood cells and support immune recovery. Timestamp: 2629

Is breakfast really the most important meal of the day?

No. The idea originated as a Kellogg’s marketing tagline for cornflakes in the 1970s, and the video argues there’s no strong evidence breakfast is universally the most important meal. Timestamp: 730

Why are toxins like BPA and phthalates harmful to hormones?

BPA and phthalates are described as obesogens and endocrine disruptors that can impair hormone balance, reduce testosterone, and contribute to metabolic problems. Timestamp: 1591

How do hormones influence women's cycles and mood?

The talk explains a hormonal hierarchy where cortisol, insulin, estrogen, and progesterone interact; stress can shift cycle regularity and mood, especially around the premenstrual period. Timestamp: 3759

What should perimenopause/menopause care look like?

Perimenopause involves fluctuating estrogen and declining progesterone; the speaker emphasizes stress management, slower pacing, and, in some cases, targeted hormone strategies while acknowledging the emotional challenges. Timestamp: 4950

How can tracking glucose help personalize eating plans?

The conversation highlights ongoing use of glucose monitors (e.g., Zoe) to understand individual glucose responses, supporting personalized windows and macronutrient choices. Timestamp: 3017

What does N-of-one mean in diet planning?

Be your own study; tailor your eating plan to your body’s responses, experiment, and iterate rather than chasing a universal one-size-fits-all diet. Timestamp: 7646

The Miracle Doctor: Get Your Sex Life Back, Melt Belly Fat & Heal Your Injury! Dr. Mindy Pelz | E256

The Diary Of A CEO

People & Blogs5 min read134 min video

Jun 15, 2023|9,953,488 views|235,516|13,735

The Diary Of A CEO steven bartlett steve bartlett podcast the diary of a CEO podcast life lessons CEO

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TL;DR

Master fasting to unlock self-healing, balance hormones, and melt belly fat.

Key Insights

Fasting shifts metabolism from a sugar-burning mode to a fat-burning mode, producing ketones that fuel the brain, improve cognition, and support fat loss.

There are six fasting styles (intermittent, autophagy, gut reset, fat burner, dopamine reset, immune reset) each with distinct targets and timelines.

Myths like 'breakfast is the most important meal' are challenged; the body is designed to adapt to feast–famine cycles and self-heal when given breaks from food.

Fasting can balance hormones and reduce inflammation, with specific windows (e.g., 13–15 hours for hormones, 17–72 hours for deeper cellular repair).

Toxins (plastics, phthalates, obesogens) and skin absorption undermine health; reducing exposures supports the benefits of fasting and hormonal balance.

Practical guidance includes choosing eating windows, testing personal responses (e.g., blood sugar), and tailoring approaches to individual biology and life stages.

THE RETURN TO HOME: FASTING AS A PATH TO SELF-HEALING

The core message is that true healing starts from believing in the body's innate self-healing capacity and restoring the body's own balance, rather than chasing external cures. Dr. Mindy Pelz emphasizes that health power has migrated outward—toward pills, diets, and external hacks—when the real leverage point is inside. Fasting is presented as a practical doorway to reduce physical, emotional, and chemical interferences, thereby enabling the body's cells, neurons, and immune system to re-tune themselves. This shift from external fixes to internal resilience is framed as foundational for lasting health and happiness.

INTERMITTENT VS AUTOPHAGY: THE SIX TYPES OF FASTING

Pelz outlines six fasting styles that build on a common premise: longer fasting periods trigger deeper cellular and hormonal adaptations. Intermittent fasting (about 12–16 hours) supports weight loss and brain clarity. Autophagy fasting (roughly 17–72 hours) deepens cellular cleanup, potentially reducing viral activity and supporting hormone balance. Gut reset (24 hours) aims to reboot intestinal stem cells; fat burner (36 hours) targets belly fat and insulin sensitivity; dopamine reset (48 hours) re-tunes reward pathways; and immune reset (72 hours) reboots white blood cells, offering systemic renewal. Each style serves different goals and timelines.

THE SCIENCE BEHIND KETONES, BRAIN, AND PERFORMANCE

A central scientific thread is the transition from glucose to ketone metabolism during fasting. After about eight hours we begin switching to fat burning, with ketones rising and fueling the brain—which can improve clarity and cognitive performance. By 12 hours the brain receives substantial ketones; by 15 hours growth hormone rises and inflammation drops. For many, these shifts translate into better focus, reduced joint pain, and accelerated fat loss, especially belly fat. The discussion connects these metabolic changes to practical outcomes in daily tasks like podcast recordings or exercise.

BEYOND WEIGHT: FASTING FOR HORMONES, INFLAMMATION, AND AGING

Fasting is linked not only to weight loss but to hormonal harmony and anti-inflammatory effects. The rise in growth hormone and testosterone seen in longer fasts supports muscle maintenance and aging resilience, while inflammation tends to drop with extended fasting windows. Pelz also connects autophagy with hormonal regulation in brain regions like the hypothalamus and pituitary, which govern sex hormones. By reducing biochemical interference—toxins, toxins-induced inflammation, and oxidative stress—fasting can contribute to more stable moods, sharper thinking, and healthier aging processes.

FEAST-FAMINE AS A PRIMAL FRAMEWORK

Pelz grounds fasting in the primal, feast–famine cycles of our ancestors. They hunted, feasted, and endured periods without food, which sharpened mental focus, energy, and survival. Modern life with constant food access disrupts this balance. The discussion invites readers to re-create a rhythm of eating and fasting that mirrors those cycles—using structured fasting windows and intentional feeding periods to optimize energy, performance, and self-healing. This evolutionary lens helps explain why fasting feels natural and powerful when aligned with our biology.

GUT HEALTH, MICROBIOME, AND THE 24-HOUR GUT RESET

A key concept is the gut’s remarkable plasticity. MIT-backed findings show that 24 hours without food can stimulate intestinal stem cells and begin repairing the gut lining and microbiome. Pelz shares clinical observations of patients with long-term antibiotic use, birth control, and poor diets who improve gut health after a 24-hour fast, sometimes reducing dependence on supplements. A healthier gut microbiome supports better digestion, mood, and even hormonal regulation, illustrating how a targeted fasting window can reset the gut along with systemic health.

IMMUNE SYSTEM REVITALIZATION: 72-HOUR BODY REBOOT

Building on Longo’s research, Pelz explains that a three-day fast can purge old white blood cells and trigger the production of newer, more responsive immune cells. This immune reboot can synergize with recovery from injury or illness, as demonstrated by anecdotes such as tendon healing during faster states. The concept frames fasting as a powerful, though demanding, tool for immune optimization, especially in the context of modern toxin exposure and chronic stress that can tax immune resilience.

TOXINS, TOXIC EXPOSURE, AND HOW CLEAN-LIVING SUPPORTS FASTING

Pelz highlights how ubiquitous toxins—plastics (BPA), phthalates, obesogens, and skin-absorbed chemicals—undermine hormonal balance and health. The discussion connects modern exposure to slower recovery, weight gain, and cognitive risks. She emphasizes reducing toxin load, choosing cleaner personal care products, and recognizing the skin’s role as a major absorption pathway. By lowering toxic load, fasting and metabolic health can work more effectively, creating a healthier environment for hormonal signaling and brain function.

PRACTICAL STARTING POINTS: START SLOW, TEST, AND TAILOR

Practical guidance stresses individualized pacing: choose an eating window that suits life, climate, and activity, and gradually extend fasting periods. Coffee with no sugar is generally acceptable for many, but responses vary; blood glucose testing (e.g., continuous monitors) can reveal whether a given coffee or snack disrupts your fast. Pelz urges listeners to observe their bodies, track responses, and adjust—especially around sleep, stress, and female hormonal cycles—so fasting becomes sustainable and beneficial rather than punitive.

PERSONALIZED APPROACH: LISTEN TO YOUR BODY AND ADAPT

The conversation closes by stressing personalization. Fasting is not a one-size-fits-all protocol; factors like sex, age, menstrual cycles, activity level, and toxin exposure affect outcomes. Pelz encourages experimenting with the six fasting styles, calibrating windows, and using biofeedback to guide choices. The overarching aim is to empower individuals to reclaim health autonomy, align lifestyle with biology, and gradually build a resilient system capable of healing, sustaining energy, and thriving in a toxin-loaded world.

Mentioned in This Episode

●Supplements

●Tools & Products

●Books

●Studies Cited

●People Referenced

Descriptive Cheat Sheet: fasting dos and don'ts

Practical takeaways from this episode

Do This

Aim for a main eating window of 8–10 hours (adjust seasonally).

Consider starting with a 12–16 hour fasting period (intermittent fasting).

Use a fasted snack that’s fat-based (e.g., MCT oil + cocoa/cacao) to stay in a fasted state.

If you have a busy schedule, personalize your window to fit real life (e.g., 1–9 pm).

Experiment with 24-hour or 36-hour fasts occasionally (with medical guidance when needed).

Combine fasting with resistance training and ≥30 g of protein after workouts.

Avoid This

Don’t force fasting if you have an active eating disorder without professional supervision.

Don’t eat late at night or during the fasting window unless you’re intentionally fasting and within your window.

Don’t rely on sugar spikes to validate eating; aim for metabolic switching through consistent windows.

Don’t rely solely on supplements to fix hormonal issues; address gut, liver, and lifestyle factors as well.

Six Fast Types and Their Main Outcomes

Data extracted from this episode

Fast Type	Typical Window	Key Outcomes
Intermittent fasting	12–16 hours	Ketone production; brain clarity; inflammation down; possible testosterone increase in men
Autophagy fasting	17–72 hours	Cellular cleanup; immune system enhancement via autophagy; potential anti-viral cellular defense
Gut reset fast	24 hours (weekly/frequent)	Intestinal stem cell reboot; gut microbiome repair; mood improvements via serotonin
Fat burner fast	36 hours fasting, then 12 hours eating	Weight loss, belly fat reduction, robust autophagy and ketone production
Dopamine reset fast	48 hours	Reboot of dopamine system; heightened enjoyment of food with less intake after refeeding
Immune reset fast	3 days	Immune system reboot; stem cell production; potential support during chemo

Common Questions

Fasting is the deliberate timing of eating that shifts your body from a sugar-burning to a fat-burning state, producing ketones that fuel the brain and support repair processes. It’s presented here as a practical, scalable tool to improve metabolic health, inflammation, and cognitive clarity. Timestamp: 26