Podcast Summary: The Dylan Gemelli Podcast

Episode #64 Featuring Dr. Chris Rhodes — The ULTIMATE MASTERCLASS ON FASTING!
Date: November 4, 2025
Host: Dylan Gemelli
Guest: Dr. Chris Rhodes, PhD (Nutritional Biochemistry, UC Davis; founder of Mimeo)

Episode Overview

This episode delivers an in-depth exploration of fasting—its genuine biological mechanisms, the anti-aging and health benefits, the practical challenges, and the emergence of fasting mimetics like Mimeo. Dylan and Dr. Rhodes walk listeners through fasting’s science without hype, discussing how fasting influences longevity, cellular health, brain performance, and metabolism, and how Mimeo aims to replicate those benefits, especially for those who struggle to fast.

Key Discussion Points and Insights

1. The True Meaning & Types of Fasting

[06:08]

• Fasting = Not Eating: At the simplest level, fasting is abstaining from food.

• Validated Benefits: Over 1,000 studies (animal and human) show profound effects like longevity, increased health span, and prevention/delay of diseases (neurodegenerative, cardiovascular, autoimmune, cancer).

• Types of Fasting:

  • Alternate Day Fasting: Eat one day, fast the next—observable lifespan increases (30–80% in animals), independent of caloric restriction.
  • Other Formats: 16:8 (16 hours fasting, 8 hours eating), 24/36-hour fasts.

• Quote (Dr. Rhodes, 06:53):
  "Fasting is one of the only ways we know of to reliably extend lifespan... you can alter meal timing and get these really profound effects, even if total calories stay the same."

2. The Challenge of Fasting & Societal Barriers

[09:07]

• Difficult to Implement: Social isolation, lifestyle inconvenience, and the sheer challenge of regular extended fasts deter most people.
• Personal Experience: Dr. Rhodes did alternate day fasting for two years: "It got to the point where my sister was like, 'Sure, Chris, you'll live longer, but what’s the point if you have to live less?'" [11:21]

3. Fasting Mimetics and Mimeo

[04:28]

• Definition: A mimetic activates biological pathways normally triggered by fasting, without calorie deprivation.

• How Mimeo Works:

  • Contains molecules the body produces during a 36-hour fast, given as a supplement.
  • Can ‘supercharge’ shorter fasts or deliver fasting benefits to people unable or unwilling to fast.

• Quote (Dr. Rhodes, 05:07):
  "Mimeo is... taking the same molecules your body produces during a 36-hour fast, giving them back to you as a daily supplement. So you can recreate fasting at the molecular level... without actually fasting."

4. Neurological & Cognitive Benefits of Fasting

[13:16]

• Glucose → Ketone Switch: During fasting, the brain shifts fuel partly to ketones, lessening neuro-inflammation and excitability.

• Enhanced Brain Function: Reported improvements in clarity, mood, and protection against neurodegenerative diseases due to promoted autophagy (cellular clean-up).

• Evolutionary Perspective: Fasting signals the brain to optimize learning, vigilance, and environmental awareness (survival benefit).

• Quote (Dr. Rhodes, 15:15):
  "People do have more mental clarity, better cognition—and you can see that in clinical studies all the time."

5. Autophagy, Cellular Health & Anti-Aging

[21:37]

• Cellular Optimization: Fasting triggers "cellular clean-up" (autophagy, mitophagy) and enhances all key aspects of cell health:

  • Membranes, mitochondria, nucleus—all get upgraded.

• Damage Prevention & Repair: Boosts anti-oxidant, anti-inflammatory response, DNA repair, and reduces senescent (“zombie”) cells that contribute to aging and disease.

• Long-Term Impact: Early, repeated fasting or mimetic exposure maximizes lifelong benefit, but starting before full development (age 18–25) or in advanced age (70+) can have drawbacks.

• Quote (Dr. Rhodes, 24:55):
  "Fasting really activates this longevity bio program—optimizing cellular function for survival and maximum lifespan."

6. Chronic Overnutrition & Societal Eating Patterns

[36:32]

• Modern Problem: We are in a perpetual postprandial (fed) state—multiple meals and snacks daily—leading to chronic inflammation, reduced repair, and more cellular “wear and tear.”

• Fasting as Antidote: Creates space for repair, restoration, and slows degenerative processes.

• Memorable Critique (Dr. Rhodes, 37:17):
  "Three meals a day plus snacks... has a weird societal pressure. It's serial company propaganda, unfortunately."

7. What Breaks a Fast?

[42:37]

• Not as Rigid as You Think:
  • Takes more than people assume (at least 200–300 calories).
  • Glucose spikes definitely break a fast (triggers insulin response); fat less so.
  • Zero-calorie drinks do not break a fast.
  • Protein under 100–200 calories probably doesn’t break a fast from a biochemical standpoint, but purists might say otherwise.

8. The Science and Ingredients Behind Mimeo

[45:40]

• Seven Years of Research: Human clinical data, metabolomics to identify molecules elevated during a 36-hour fast.

• Key Molecules: Four specific fasting-induced metabolites (including spermidine, OEA) that, in synergy, reproduce anti-inflammatory, antioxidant, cardioprotective, metabolic benefits of fasting.

• Spermidine:

  • Strong autophagy activator, anti-inflammatory, cognition enhancer.

• Quote (Dr. Rhodes, 48:12):
  "We found this synergistic combination of four [molecules] that, when put together, could recreate all the benefits of fasting we saw in the cells."

9. Clinical Data on Mimeo

[53:03]

• No Special Diet Needed: Studies showed robust benefits without changing participants’ diets.

• Measured Benefits:

  • Improved blood glucose, cholesterol, triglycerides, testosterone.
  • Reduced biological age by 2.5 years in 8 weeks.
  • Appetite suppressed, fewer cravings, improved satiety.

• Quote (Dr. Rhodes, 55:05):
  "...we got a two-and-a-half year reduction in biological age in just that eight week time period."

10. Who Should & Shouldn’t Fast; Medication Concerns

[30:04]

• Young People: Wait until full adulthood (at least 18, ideally age 25) before extended fasting.
• Older People: Over 65–70, fasting is less useful and can worsen sarcopenia & bone loss.
• Diabetic context: Type 2 diabetics usually benefit, Type 1 should avoid.
• Mimeo & Medications: No known side effects or drug interactions; all molecules are human-endogenous.

11. Appetite Suppression and the ‘Body’s Natural Ozempic’

[56:04]

• OEA: A gut-brain molecule found in Mimeo, activated during long fasts, naturally suppresses appetite, increases fat metabolism.
• Distinguished from Drugs: Unlike pharmaceutical GLP-1 agonists (Ozempic), OEA is a normal metabolic adaptation.

Notable Quotes & Memorable Moments

• "Fasting is one of the only ways that we know of to reliably extend lifespan." — Dr. Chris Rhodes [06:53]
• "You can activate fasting pathways even while eating normally." — Dr. Chris Rhodes [42:07]
• On fasting's challenge:
  "If you're adding years but you're taking away in general, then... render it pointless." — Dylan Gemelli [11:50]
• On societal eating:
  "Three meals a day plus snacks... is all serial company propaganda." — Dr. Chris Rhodes [37:17]
• On supplement safety:
  "All these molecules are naturally produced in the human body, they're very, very safe." — Dr. Chris Rhodes [51:46]
• On scientific longevity:
  "In our animal models, we could extend lifespan by 96% just through supplementation." — Dr. Chris Rhodes [48:12]
• On OEA/mimeo's appetite suppression:
  "This is your body's natural ozempic." — Dr. Chris Rhodes [56:56]

Timestamps for Key Segments

• What is fasting & types: [06:08]–[08:56]
• Longevity & cellular effects: [08:56]–[13:16]
• Fasting and brain health: [13:16]–[18:47]
• Social & psychological challenges: [11:18]–[18:47]
• Autophagy, anti-aging, and cell repair: [21:37]–[29:47]
• Zombie (senescent) cells explained: [27:36]–[29:47]
• Fasting for specific ages and health conditions: [30:04]–[31:44]
• Science of Mimeo and fasting mimetics: [45:40]–[48:32]
• Mimeo’s clinical trial results: [53:03]–[55:05]
• Appetite suppression mechanism (OEA): [56:04]–[57:45]
• Final words and resources: [59:36]–[60:54]

Further Learning & Follow-Up

• Mimeo website (all publications and data): [59:36]
  mimeohealth.com
• Discount code and product info: See episode description.

This episode is a gold mine for anyone looking to understand fasting, longevity, metabolic health, and cutting-edge approaches to reaping fasting’s benefits—science-forward, practical, and packed with actionable knowledge.