The Dr. Gundry Podcast

Episode: Melatonin for Sleep: Microdosing, Sleep Apnea, CPAP vs Inspire
Date: November 4, 2025
Host: Dr. Steven Gundry

Episode Overview

In this episode, Dr. Steven Gundry dives into the science of sleep as a critical pillar of energy, brain health, and longevity. He focuses on melatonin—dispelling myths about its use, sharing the benefits of microdosing, and explaining its vital role in mitochondrial health. The episode further explores simple, evidence-based habits for better sleep, delves into the causes and solutions for sleep apnea, and compares the traditional CPAP device to the newer Inspire implant. Dr. Gundry provides both clinical insights and practical tips for anyone looking to sleep better and live longer.

Key Discussion Points & Insights

1. What is Melatonin Really?

• Not just a sleep hormone:
  • Most people think of melatonin as “the sleep hormone,” but Dr. Gundry emphasizes it is just as important as a mitochondrial antioxidant.
    • “Melatonin is not just the sleep hormone… melatonin is actually only one of two antioxidants in your mitochondria.” (06:55)
    • The other is glutathione.
• Melatonin production and blue light:
  • Melatonin is produced in the pineal gland in response to circadian rhythms, and crucially, to the absence of blue light.
    • Modern devices and lighting constantly emit blue light, disrupting this cycle.
    • “We’re constantly bombarded with that waking signal rather than the absence of that blue light with sundown, which normally would start the production of melatonin.” (05:24)

2. How Modern Lifestyles Attack Sleep

• The "Edison Effect":
  • The invention of the light bulb (specifically incandescent with its blue light spectrum) disrupted natural melatonin production.
    • Before artificial lighting, people only experienced yellow/red light after sunset, allowing natural sleep hormone release. (03:40-04:49)
• Aging and Melatonin:
  • Melatonin production diminishes with age, making good sleep and mitochondrial repair harder to achieve.
  • But Dr. Gundry suggests modern blue light overexposure, rather than just aging, is the main problem. (09:00-09:25)

3. Melatonin Supplementation: Dosage Matters

• Microdosing over megadosing:
  • Effective sleep induction usually only requires 0.1 to 0.3 mg.
    • “Very small doses of oral melatonin or sublingual melatonin, like 0.1 to 0.3 milligrams is really all you need to initiate the sleep cycle and that’s not much.” (09:56)
  • High doses (3mg, 5mg, 10mg+) often cause people to wake in the middle of the night when the effect wears off. (10:23-10:37)
  • Time-release formulations can help maintain sleep through the night but may cause morning grogginess for some.
    • “Try that out first… if you’re one of those people [who wake up groggy], then by all means think about the small doses, the 0.1 or 0.3 milligram.” (11:24)
• Potential cancer benefits:
  • Dr. Gundry references animal studies and personal clinical experience suggesting higher-dose melatonin (throughout the day) may offer anti-cancer effects, likely due to mitochondrial protection (11:45-12:13).

4. Melatonin in Foods and the Mediterranean Diet

• Food sources:
  • Pistachios have the highest melatonin content of any food; Dr. Gundry eats them daily (13:52-14:08)
    • “Pistachios have the highest melatonin content of any food. And you’re correct. I have a bowl of shelled pistachios every afternoon right before dinner.” (13:52)
  • Other sources include olive oil, red wine, and Mediterranean spices.
• Mediterranean Diet Theory:
  • Benefits may derive both from polyphenols and from a high dietary melatonin intake—both support mitochondrial health. (13:29-13:51)

5. Habits to Boost Natural Melatonin and Sleep Quality

• Light exposure management:
  • Dim screens and lights at night, use blue light blocking glasses
    • “There is a blue light dimming feature on every phone. Make sure to switch it on... particularly in your bedroom… put on a pair of blue blocking glasses.” (14:15-14:51)
• Get sunlight early:
  • “Try to get out early in the morning and get bright sunlight. That bright sunlight starts this circadian cycle. And get a dog. The dog will assure that you get out in bright sunlight.” (15:28)
  • For those in dark climates, consider a bright light box in the mornings (15:31-15:44).
• Avoid eating late:
  • Stop food intake 3 hours before bedtime.
    • “...we have created the perfect storm for not allowing our brain to recover every night in the way it’s supposed to recover.” (27:26)
• Supplement strategy:
  • Turkey (tryptophan converted to melatonin), pistachios, short-term use of low-dose melatonin, try timed-release melatonin for sustained effect. (15:53-16:20)

6. Why Good Sleep Adds Years to Your Life

• Memory, metabolism, and mood:
  • Poor sleep raises risk of cognitive decline, depression, metabolic issues, and even certain cancers (19:50).
  • REM sleep is vital for memory formation (24:09).
• Deep sleep “brain wash”:
  • During deep sleep, the brain “shrinks” up to 25%, squeezing out toxins including amyloid and tau proteins—a process crucial for dementia prevention.
    • “During deep sleep, we now know that the brain undergoes a wash cycle… the brain squishes out all the toxins that can accumulate, like amyloid, like tau, like bacterial toxins.” (24:07-27:26)
• Don’t eat late:
  • Digestion diverts blood flow from the brain, impeding this wash cycle and increasing long-term neurodegenerative risk (27:26-29:43).

7. Sleep Apnea: Causes, Risks, and Solutions

• What is sleep apnea?
  • Characterized by repeated pauses in breathing during sleep, often from the tongue falling back and blocking the airway (29:43).
    • Snoring, gasping, dry mouth, headache, choking, and daytime fatigue are warning signs.
• Physical and lifestyle risk factors:
  • Small lower jaw from evolutionary diet change (31:15-33:02)
  • Weight gain and fat deposition in the neck/tongue worsen airflow
  • Alcohol, sedatives, and reflux also exacerbate apnea
  • For women, postmenopausal hormone changes and weight gain are factors
• Health dangers:
  • Many people with sleep apnea are “totally unaware” they spend much of the night hypoxic.
  • Chronic, untreated apnea damages the heart and brain, seen even in subtle blood biomarkers like troponin I and NT-proBNP (37:39-40:52).
    • “Who would have guessed that every night their heart was basically having a mini heart attack that they were completely unaware of.” (37:39)
• Weight loss as therapy:
  • Losing fat from the neck and tongue often allows patients to stop using the CPAP device (40:52-41:19).
  • Side-sleeping, not back-sleeping, is also recommended, with specialized pillows to help.

8. Sleep Apnea Treatment Options: CPAP vs. Inspire

• CPAP remains the gold standard:
  • “It is the gold standard. It’s proven to reduce sleep apnea episodes. It lowers blood pressure, improves daytime energy…and reduces cardiovascular risk.” (45:01)
  • Drawbacks: mask discomfort, fitting/travel hassle, compliance.
• Lifestyle interventions can be curative:
  • Weight loss, avoiding alcohol, dietary changes, and physical sleep side positioning often allow patients to stop using CPAP.
  • “I’m amazed at how many people we can get off CPAP by simple dietary changes, by putting them on their left side, by weight loss.” (45:39)
• Inspire implant:
  • FDA-approved for those who cannot tolerate CPAP, but only for certain BMI and severity ranges.
  • Stimulates the hypoglossal nerve to keep the tongue forward and airway open.
    • “It uses a good principle that kind of pulling the tongue out of the way may be useful.” (49:44)
  • Pros: No mask or hose, improved quality of life for some.
  • Cons: Requires surgery and follow-up programming, expensive, possible surgical risks, not covered by insurance for all.
  • “But in the meantime, lifestyle modification is still the number one thing I do…” (51:35)

Notable Quotes & Memorable Moments

• “Melatonin is not the sleep hormone, but melatonin is really the mitochondrial antioxidant that you want.” — Dr. Gundry (07:07)
• “More melatonin may actually not be better, just enough to initiate that sleep cycle is ideal.” — Dr. Gundry (10:02)
• “Pistachios have the highest melatonin content of any food…” — Dr. Gundry (13:52)
• “During deep sleep, we now know that the brain undergoes a wash cycle. The brain can shrink by as much as 25%, very much like squeezing out a sponge.” — Dr. Gundry (24:07)
• “Who would have guessed that every night their heart was basically having a mini heart attack that they were completely unaware of.” — Dr. Gundry (37:39)
• “I’m amazed at how many people we can get off CPAP by simple dietary changes, by putting them on their left side, by weight loss.” — Dr. Gundry (45:39)
• “Lifestyle modification is still the number one thing I do with my patients with sleep apnea…” — Dr. Gundry (51:35)

Important Timestamps

• [02:17] — What is Melatonin? Its roles & why blue light matters
• [06:11] — Melatonin as a mitochondrial antioxidant
• [09:56] — Effective dosing: Why microdosing melatonin is best for sleep
• [13:04] — Melatonin-rich foods & Mediterranean diet synergy
• [14:15] — Strategies to boost natural melatonin & sleep hygiene tips
• [19:50] — How sleep deprivation shortens lifespan (mood, metabolism, memory)
• [24:07] — Explanation of sleep stages (REM, deep sleep, brain “wash”)
• [27:26] — Why eating before bed harms your brain
• [29:43] — Sleep Apnea: What it is, why it matters
• [37:39] — Heart risk markers: How sleep apnea can silently damage your organs
• [40:52] — Weight loss, physical factors, and alternative therapies
• [45:01] — CPAP as gold standard, compared with Inspire implant
• [49:44] — Pros and cons of Inspire implant
• [51:35] — Why lifestyle change remains the first choice

Actionable Takeaways

• Use only the smallest effective dose of melatonin (0.1–0.3 mg) for sleep initiation.
• Try time-release melatonin if you have sleep maintenance issues, but be mindful of possible morning grogginess.
• Eat melatonin-rich foods (especially pistachios, olive oil, red wine, Mediterranean spices).
• Stop eating 3+ hours before bedtime for optimal brain “cleaning”.
• Limit blue light exposure at night: dim/don’t use screens, use blue light blocking glasses.
• Expose yourself to bright daylight early each morning.
• For sleep apnea: Try losing weight, switch to side sleeping, and address lifestyle factors before resorting to medical devices or surgery.
• If suspected sleep apnea, pursue a sleep study (at-home options are now available) and don’t ignore snoring or partner complaints.

This episode delivers both scientific depth and practical advice, empowering listeners to take easy, meaningful steps for better sleep, stronger mitochondria, and improved longevity. Dr. Gundry’s blend of clinical stories, humor, and personal routines makes the science accessible and actionable.