The Dr. Gabrielle Lyon Show

You might think microplastics are just an environmental nuisance that passes through your body, but the latest tissue studies tell a very different story. As a physician, Dr. Gabrielle Lyon breaks down where the science lands, past both the fear-mongering and the dismissiveness.
In this solo episode, Dr. Gabrielle Lyon discusses:
Why over 58% of patients in a landmark NEJM study had plastic embedded in their arterial plaque and the 4.5x higher risk of heart attack, stroke, and death that came with it
How microplastics act as a "Trojan horse," carrying endocrine-disrupting chemicals into your blood, testes, brain, and reproductive tissue
Why perimenopause and menopause are an especially vulnerable window for plastic-driven hormone disruption
The five low-cost "Lyon Protocol" rules to cut your exposure, starting with never microwaving plastic and letting food cool before you store it

This matters because you don't need to overhaul your life or wait twenty years for perfect data to protect your cellular health; you just need the handful of small, automated decisions that move the needle on your metabolic and hormonal baseline.
Thank you to our sponsors:
Our Place - Upgrade your kitchen with Our Place today. Visit https://bit.ly/3RnCYH0 and use code DRYLON for 10% off sitewide. That’s F-R-O-M-O-U-R-P-L-A-C-E DOT COM / D-R-L-Y-O-N and use code DRLYON for 10% off sitewide. With a 100-day trial, you can try it completely risk-free.
Timeline - Get 20% off your Mitopure order at https://bit.ly/4wJpFzZ
Bon Charge - Save 15% at https://bit.ly/44bIoYx with code DRLYON

Explore More from Dr. Gabrielle Lyon
Weekly newsletter: Recipes, podcast updates, and practical weekly insights https://drgabriellelyon.com/sign-up/
Apply to become a patient: Personalized care with Dr. Lyon’s clinical team https://drgabriellelyon.com/new-patient-inquiry/

Connect with Dr. Gabrielle Lyon:
Instagram: https://www.instagram.com/drgabriellelyon/
TikTok: https://www.tiktok.com/@drgabriellelyon
X (Twitter): https://x.com/drgabriellelyon
Facebook: https://www.facebook.com/doctorgabriellelyon

Chapters
00:00 - Introduction
01:30 - What microplastics and nanoplastics are
03:00 - Where plastics show up inside us
04:30 - The UCSF systematic review
06:10 - Inflammation, cytokines, and thyroid
07:40 - Plastic in arterial plaque and the 4.5x risk
10:10 - The strongest skeptic arguments
13:00 - Lead, asbestos, and trans fats
14:40 - The Trojan horse for hormone disruptors
16:10 - Reproductive aging and menopause
17:50 - Where Dr. Lyon lands
19:40 - The Lyon protocol: five rules
If you found this episode valuable, share it with someone who would benefit from it.
Disclaimers: This episode includes paid sponsorships.
The Dr. Gabrielle Lyon Podcast and YouTube are for general information purposes only and do not constitute the practice of medicine, nursing, or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast, YouTube, or materials linked from this podcast or YouTube is at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Users should not disregard or delay in obtaining medical advice for any medical condition they may have and should seek the assistance of their health care professional for any such conditions.

You've been told that 10,000 steps a day is enough to keep you healthy but when it comes to your bones and your muscles, walking falls short, and the science explains exactly why. The real drivers of strength, bone density, and lasting health are load, intensity, and resistance, not just movement.
In this episode, Dr. Gabrielle Lyon sits down with Dr. Alyssa Olenick, a PhD in exercise metabolism and ultramarathoner who blends endurance and strength training, to discuss:
Why the "interference effect," the fear that cardio cancels your strength gains, is overblown for almost everyone, and what causes the carryover fatigue
How most women train too lightly, believing they're at a 9 out of 10 when they're closer to a 5, and never trigger real muscle adaptation
Why estrogen is not the primary driver of muscle, resistance training is, and what that means through the menopause transition
The early warning signs of low energy availability, including cycle changes that show up long before a missed period, and the rapid bone loss that follows
How to structure strength, power, and cardio together, and fuel it properly without sabotaging recovery

You'll walk away knowing how to train for strength, power, and bone density that lasts and why being undertrained, not fragile, is the real problem for most women.
The July Forever Strong Foundations Challenge begins July 6, 2026. This 4-week challenge is designed to help you build a stronger, more energized you through sustainable nutrition, training, and lifestyle habits. Register here: https://bit.ly/4p3DW7U
Thank you to our sponsors:
Our Place - Upgrade your kitchen with Our Place today. Visit https://bit.ly/3RnCYH0 and use code DRYLON for 10% off sitewide. That’s F-R-O-M-O-U-R-P-L-A-C-E DOT COM / D-R-L-Y-O-N and use code DRLYON for 10% off sitewide. With a 100-day trial, you can try it completely risk-free.
Timeline - Get 20% off your Mitopure order at https://bit.ly/4wJpFzZ
Bon Charge - Save 15% at https://bit.ly/44bIoYx with code DRLYON

Explore More from Dr. Gabrielle Lyon
Premium Podcast Subscription: Ad-free episodes, key takeaway summaries, exclusive Q&A, and behind-the-scenes content https://foreverstrong.supercast.com
Weekly newsletter: Recipes, podcast updates, and practical weekly insights https://drgabriellelyon.com/sign-up/
Apply to become a patient: Personalized care with Dr. Lyon’s clinical team https://drgabriellelyon.com/new-patient-inquiry/

Find Alyssa Olenick at:
Website: https://doclyssfitness.com/
Instagram: https://www.instagram.com/doclyssfitness/
The Running Ebook: https://doclyssfitness.com/running/

Connect with Dr. Gabrielle Lyon:
Instagram: https://www.instagram.com/drgabriellelyon/
TikTok: https://www.tiktok.com/@drgabriellelyon
X (Twitter): https://x.com/drgabriellelyon
Facebook: https://www.facebook.com/doctorgabriellelyon

Chapters
00:00 - Introduction
02:09 - Hybrid vs. concurrent training defined
05:03 - Where beginners should start
10:12 - Movement vs. exercise vs. training
11:30 - The interference effect: the boogeyman
16:55 - Nervous system fatigue and bar speed
20:07 - Why running fatigues you more than cycling
26:04 - Fuel use, fat oxidation, and the crossover
34:39 - Mitochondria and metabolic flexibility
39:13 - What we don't know about women's physiology
44:18 - Type one vs. type two muscle fibers
46:00 - Testosterone, training age, and muscle gain
48:02 - What we confidently know about women and muscle
49:43 - Estrogen is not the muscle driver
53:14 - Menstrual cycle, performance, and perception
58:03 - Training the mind, not just the body
1:02:18 - The aerobic guidelines and doing more
1:06:26 - The 2026 resistance training guidelines
1:16:49 - Squat, hinge, push, pull explained
1:22:04 - Why walking isn't enough for bone
1:26:14 - Power, plyometrics, and power-penia
1:35:33 - Programming cardio without killing gains
1:41:03 - Low energy availability and warning signs
1:47:38 - Protein and carbs for the hybrid athlete
1:53:52 - The seasons approach: spend a year lifting

If you found this episode valuable, share it with someone who would benefit from it.
Disclaimers: This episode includes paid sponsorships.
The Dr. Gabrielle Lyon Podcast and YouTube are for general information purposes only and do not constitute the practice of medicine, nursing, or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast, YouTube, or materials linked from this podcast or YouTube is at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Users should not disregard or delay in obtaining medical advice for any medical condition they may have and should seek the assistance of their health care professional for any such conditions.

You were told your testosterone is "normal" so why do you still feel exhausted, weak, and off? The number on your lab report was never built for you, and your own genetics may be the reason it doesn't match how you feel.
In this solo episode, Dr. Gabrielle Lyon discusses:
Why the standard 300–1000 ng/dL range ignores your age, comorbidities, and genetics, and why two men with identical labs can feel completely different
How CAG repeats determine whether your body "catches" the testosterone you produce, meaning you might need 400 to feel great while someone else needs 800
Why the 80-year-old fear that testosterone fuels prostate cancer is built on a single flawed 1941 study, and what the androgen saturation model proves instead
How everyday endocrine disruptors BPA in receipts, phthalates in personal care, atrazine in tap water quietly lower your testosterone even when you eat clean and train hard
The correct AUA testing protocol your doctor may be skipping: two early-morning, fasted measurements plus actual symptoms, not one afternoon blood draw

Understanding how your own body uses testosterone lets you walk into your doctor's office armed with facts instead of frustration and stop being told you're "fine" when you don't feel it.
Thank you to our sponsors:
OneSkin - Get 15% off at https://bit.ly/4ekX9gt with code DRLYON

Explore More from Dr. Gabrielle Lyon
Premium Podcast Subscription: Ad-free episodes, key takeaway summaries, exclusive Q&A, and behind-the-scenes content https://foreverstrong.supercast.com
Weekly newsletter: Recipes, podcast updates, and practical weekly insights https://drgabriellelyon.com/sign-up/
Apply to become a patient: Personalized care with Dr. Lyon’s clinical team https://drgabriellelyon.com/new-patient-inquiry/

Connect with Dr. Gabrielle Lyon:
Instagram: https://www.instagram.com/drgabriellelyon/
TikTok: https://www.tiktok.com/@drgabriellelyon
X (Twitter): https://x.com/drgabriellelyon
Facebook: https://www.facebook.com/doctorgabriellelyon

Chapters
00:00 - Introduction
00:55 - Why one reference range fails everyone
01:45 - Men with normal labs who feel terrible
02:40 - Dismantling the prostate cancer myth ahead
03:40 - Testosterone decline by age data
04:30 - It's comorbidities and environment, not just age
05:10 - Endocrine disruptors and how they work
06:30 - How EDCs lower testosterone
08:00 - Common offenders and where they hide
09:00 - Receipts, atrazine, and performance apparel
10:30 - Reducing your chemical exposure
11:45 - The prostate cancer paradigm shift
12:20 - The flawed 1941 study
13:00 - The androgen saturation model
14:00 - Testosterone therapy with prostate cancer data
15:00 - What happens when you block androgens
15:45 - Androgens and brain protection
16:45 - CAG repeats and genetic variability
18:30 - The rain and buckets analogy
19:30 - AUA testing and diagnosis protocol
21:00 - Symptoms, targets, and safe monitoring
22:15 - Muscle-centric application and recap
If you found this episode valuable, share it with someone who would benefit from it.
Disclaimers: This episode includes paid sponsorships.
The Dr. Gabrielle Lyon Podcast and YouTube are for general information purposes only and do not constitute the practice of medicine, nursing, or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast, YouTube, or materials linked from this podcast or YouTube is at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Users should not disregard or delay in obtaining medical advice for any medical condition they may have and should seek the assistance of their health care professional for any such conditions.

The July Forever Strong Foundations Challenge begins July 6, 2026. This 4-week challenge is designed to help you build a stronger, more energized you through sustainable nutrition, training, and lifestyle habits. Register here: https://bit.ly/4gCmoNR
For 40 years you've been told 0.8 grams of protein per kilogram is "enough" but the scientists who contributed the reports behind the new 2025–2030 Dietary Guidelines say not a single study has ever shown that number beats eating more.
In this episode, Dr. Gabrielle Lyon sits down with Dr. Don Layman and Dr. Heather Leidy, the protein researchers who developed the scientific reports informing the new U.S. Dietary Guidelines, to discuss:
Why the guidelines reprioritized protein to a healthy range of 1.2–1.6 g/kg and why that still isn't technically "high protein"
Why you don't really have a protein requirement, but an essential amino acid requirement and what that means for your brain, mood, and antioxidant production
Who's quietly falling short: roughly 20% of women over 60 sit below the RDA, and adolescent girls are among the most consistently deficient
How to spot real protein on a label (Layman's 10-gram threshold) and why most "+protein" snacks are just fairy dust
What a higher-protein breakfast does to afternoon cravings, backed by fMRI brain-reward data
Walk away knowing how much protein you actually need, why "enough to avoid deficiency" and "enough to thrive" are two different numbers, and how to build every meal around protein first so you're covered on the nutrients that matter most.
Thank you to our sponsors:
OneSkin - Get 15% off at https://bit.ly/4ekX9gt with code DRLYON

Explore More from Dr. Gabrielle Lyon
Premium Podcast Subscription: Ad-free episodes, key takeaway summaries, exclusive Q&A, and behind-the-scenes content https://foreverstrong.supercast.com
Weekly newsletter: Recipes, podcast updates, and practical weekly insights https://drgabriellelyon.com/sign-up/
Apply to become a patient: Personalized care with Dr. Lyon’s clinical team https://drgabriellelyon.com/new-patient-inquiry/

Find Dr. Donald K. Layman at:
Website: https://www.metabolictransformation.com/
Instagram: https://www.instagram.com/layman.don

Connect with Dr. Gabrielle Lyon:
Instagram: https://www.instagram.com/drgabriellelyon/
TikTok: @drgabriellelyon
X (Twitter): https://x.com/drgabriellelyon
Facebook: https://www.facebook.com/doctorgabriellelyon

Chapters
00:00 - Introduction
02:00 - The biggest change in 45 years
03:36 - Why the guidelines are so controversial
06:09 - Process complaints vs. the science
08:25 - Protein was always there, just hidden
10:26 - Is 1.6g really high protein?
13:00 - Half of people are below average
13:45 - The randomized trials that say no benefit
16:57 - Why cherry-picked studies mislead
18:42 - Amino acids are essential, fiber isn't
21:17 - Does protein only matter with lifting?
33:33 - Nitrogen balance and its blind spot
40:02 - The carbohydrate RDA everyone ignores
47:37 - The nine essential amino acids
49:49 - Why aging makes deficiency worse
53:36 - Going below 50% animal protein
58:25 - Protein quality and carbohydrate dilution
1:04:34 - Hitting protein when you're small
1:08:53 - High-protein breakfast and the teen brain
1:10:19 - fMRI: blunted food cravings
1:18:40 - The saturated fat sticking point
1:26:30 - The 10% number from thin air
1:40:17 - Is protein in everything fairy dust?
1:46:42 - Smart high-protein snacks

If you found this episode valuable, share it with someone who would benefit from it.

Disclaimers: This episode includes paid sponsorships.

The Dr. Gabrielle Lyon Podcast and YouTube are for general information purposes only and do not constitute the practice of medicine, nursing, or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast, YouTube, or materials linked from this podcast or YouTube is at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Users should not disregard or delay in obtaining medical advice for any medical condition they may have and should seek the assistance of their health care professional for any such conditions.

The receptor that switches off your appetite on a GLP-1 drug is the same one wired into your reward circuitry, your hormones, and your blood vessels, which means when you turn down hunger, something else may be getting turned down too, and for most people taking these drugs, nobody ever checked.
In this solo episode, Dr. Gabrielle Lyon discusses:
Why the same drug class can improve sexual function in men with obesity while potentially dampening it in lean or postmenopausal women — and why the deciding factor isn't the drug, it's the body
How rapid weight loss raises SHBG, the protein that soaks up free testosterone, so a "normal" total testosterone result can hide a real deficit your bloodwork won't flag
Why women make up 60–70% of GLP-1 prescriptions yet the entire evidence base for female sexual function is two case reports, with zero validated questionnaires in any pivotal trial
The three-tier action plan for anyone on or about to start a GLP-1 — baseline your sexual function first, get free testosterone tested, and protect muscle with protein and resistance training

Whether you're on a GLP-1 drug or considering one, you'll walk away knowing exactly what to measure before you start and what to watch for after — so a change in your sexual health gets caught as the vital sign it is, instead of being quietly dismissed.
Thank you to our sponsors:
Cozy Earth - Go to https://bit.ly/44qcXtu for up to 20% off!
Lucy - Get 20% off your next order with code DRLYON at https://bit.ly/3QEpYMX or find yours in store at https://bit.ly/3SGAEv3 .
Kettle & Fire - Head to https://bit.ly/4oJokGu and use code DRLYON for 25% off sitewide. That is K-E-T-T-L-E and Fire dot com slash DRLYON, code DRLYON for 25% off. Also available at select Sprouts, Whole Foods, and Kroger locations nationwide.

Explore More from Dr. Gabrielle Lyon
Premium Podcast Subscription: Ad-free episodes, key takeaway summaries, exclusive Q&A, and behind-the-scenes content https://foreverstrong.supercast.com
Weekly newsletter: Recipes, podcast updates, and practical weekly insights https://drgabriellelyon.com/sign-up/
Apply to become a patient: Personalized care with Dr. Lyon’s clinical team https://drgabriellelyon.com/new-patient-inquiry/

Connect with Dr. Gabrielle Lyon:
Instagram: https://www.instagram.com/drgabriellelyon/
TikTok: https://www.tiktok.com/@drgabriellelyon
X (Twitter): https://x.com/drgabriellelyon
Facebook: https://www.facebook.com/doctorgabriellelyon

Chapters
00:00 - Introduction
01:30 - The 35-year-old patient case
04:00 - The question: harm or help?
05:00 - The case against: the 4.5x ED study
06:30 - FAERS database and 182 reports
08:00 - Reward circuits, blood flow, and SHBG
11:00 - Women are 70%, the data is two case reports
12:30 - The case for: detection bias explained
15:00 - Validated studies show testosterone rising
17:00 - GLP-1 vs testosterone therapy and fertility
19:00 - Same receptor, different body
22:00 - Cross-examination: holes in both sides
26:00 - Why the drugs may not all be the same
30:00 - Confidence levels: what Lyon actually believes
33:00 - Tier 1: baseline, hormones, protein, training
35:00 - Tier 2 and 3: dose, molecule switch, adjuncts
36:30 - Your sexuality is a vital sign
If you found this episode valuable, share it with someone who would benefit from it.
Disclaimers: This episode includes paid sponsorships.
The Dr. Gabrielle Lyon Podcast and YouTube are for general information purposes only and do not constitute the practice of medicine, nursing, or other professional health care services, including the giving of medical advice, and no doctor/patient relationship is formed. The use of information on this podcast, YouTube, or materials linked from this podcast or YouTube is at the user's own risk. The content of this podcast is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Users should not disregard or delay in obtaining medical advice for any medical condition they may have and should seek the assistance of their health care professional for any such conditions.