The Dr. Gabrielle Lyon Show

You might think bone density is something you build slowly over a lifetime, but nearly all of your peak bone mass is set before age 18, in a four-year window most parents never see coming. In this solo episode I break down what happens to a child's skeleton during that window, what GLP-1 medications do inside a body that's still growing, and the protocol I'd want every parent to follow. Muscle and bone are not what a body has they're what a body was built to become.
In this solo episode, Dr. Gabrielle Lyon breaks down the science of bone health in children, adolescent GLP-1 use, and muscle building in kids:
Why the four years around age 12 in girls and 14 in boys account for close to 40% of the total bone mineral a person will carry for life
Why a hip fracture in a healthy 29-year-old is almost always a story about a childhood building phase that never happened, often tied to a history of restriction like anorexia
What semaglutide and other GLP-1 medications do inside a still growing skeleton, and why no long term bone density data exists for adolescents on these drugs
Why a JAMA Network Open trial found the group combining liraglutide with resistance training lost the most weight with bone mineral density statistically unchanged, while the drug alone caused bone loss
The complete protocol for parents: track strength and function over the scale, muscle strengthening and bone loading exercise three days a week each, protein at breakfast, and a screen time floor instead of a ceiling

Muscle and bone are not what a body has; they are what a body was built to become, and childhood is the only window that bone accrual and muscle development happen. Understanding pediatric bone health, sarcopenia in children, and the real research on GLP-1s and adolescents is the difference between guessing with your child's skeleton and protecting it on purpose.
Study and References:
Sarcopenic Obesity in Children - https://pubmed.ncbi.nlm.nih.gov/41995008/
Sedentary Behaviors in Today's Youth (AHA) - https://www.ahajournals.org/doi/10.1161/CIR.0000000000000591
Semaglutide and Body Composition (STEP 1) - https://pmc.ncbi.nlm.nih.gov/articles/PMC8089287/
Peak Bone Mass Position Statement (NOF) - https://pubmed.ncbi.nlm.nih.gov/26856587/
Bone Health After Exercise vs GLP-1 Treatment - https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2820308
Resistance Training in Kids: An Umbrella Review - https://pubmed.ncbi.nlm.nih.gov/32757164/

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Chapters
00:00 - Introduction
00:44 - The 29-Year-Old Who Fractured Her Hip
01:20 - Muscle and Bone Are Childhood Assets
03:01 - The Question I Keep Getting From Patients
03:39 - The 30-Year Lifting Debate Is Over
04:23 - Sarcopenic Obesity: More Muscle, Less Strength
07:01 - What a Mouse Model Reveals About Muscle Potential
08:24 - Screens: What the Data Shows
10:00 - Food, Sleep, and the Screen-Weight Loop
12:38 - GLP-1s in Teens: The STEP TEENS Trial
13:52 - The Muscle Framing Mistake Everyone Makes
16:49 - The Four-Year Window Bone Gets Built
18:02 - The Trial That Proves Exercise Protects Bone
20:29 - Prescribing Into an Unstudied Window
20:46 - Why Lifting Doesn't Stunt Growth
21:49 - Kids Get Stronger Without Building Muscle
22:29 - The Protocol: What to Do Starting Today
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 have probably been told that testosterone is a male hormone. Women produce more of it than estrogen, and for many of us it is the first hormone to go, sometimes reading zero five years before menopause while periods are still regular. Dr. Susan Hardwick-Smith and I get into what that costs you in muscle and bone, why there are thirty-one approved testosterone products for men and none for women, and what the number on your own lab report is measuring.
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Create Her: Aging into the Healthiest Version of Yourself by Susan Hardwick-Smith MD https://www.amazon.com/Create-Her-Healthiest-Version-Yourself/dp/1637636644/ref=sr_1_3?s=books&sr=1-3
Dr. Gabrielle Lyon with Amy Pearlman Podcast
https://bit.ly/3TcVgvB
Connect with Dr. Susan Hardwick-Smith
Website: drsusan.com
YouTube: https://www.youtube.com/@drsusan
Instagram: https://www.instagram.com/drsusanofficial
TikTok: https://www.tiktok.com/@drsusanofficial
Facebook: https://www.facebook.com/drsusanofficial/
LinkedIn: https://www.linkedin.com/in/drsusanhardwicksmith/
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Explore More from Dr. Gabrielle Lyon
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Timestamps:
00:00 - Introduction: testosterone in women
03:00 - Eighteen years in OB-GYN and the practice she left
04:57 - Thirty years in medicine, zero training on testosterone
06:40 - 31 FDA-approved products for men, zero for women
07:35 - Why women produce more testosterone than estrogen
09:20 - What the ovaries stop making at menopause
10:18 - Testosterone reading zero five years early
11:41 - Low testosterone symptoms in women
13:22 - Intrinsa, the 2004 patch the FDA turned down
19:04 - Off-label prescribing and what FDA approval means
21:35 - Cognition, breast cancer, muscle and bone
25:33 - Osteoarthritis and the anti-inflammatory theory
26:31 - Dosing fears: hair loss, acne, voice changes
28:16 - Why gels are dosed ten times higher
32:14 - The 2019 international consensus
34:00 - Dividing a 50 mg tube by ten
38:18 - The Baylor study: pellet versus gel at six weeks
40:13 - Safety data from fifty years of transgender care
45:03 - Eight years of high dosing and what it cost
46:16 - Lab reference ranges versus optimal ranges
48:28 - ELISA versus LC-MS, and what the study found
51:07 - Why free testosterone is calculated, not measured
57:58 - Tachyphylaxis and chasing the number
1:01:39 - Pellets, BioTE and where the reputation came from
1:06:33 - Delivery methods, cypionate and enanthate
1:11:47 - Whether anything raises testosterone naturally
1:13:03 - DHEA at 100 mg and what it moved
1:17:07 - Drugs that lower testosterone in women
1:20:55 - Closing thoughts on dosing and access
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 probably ate something today with high protein printed across the front of it, and there is a good chance it did almost nothing for your skeletal muscle. There is no meaningful enforcement standard for what the front of a package is allowed to promise, and the research points to a per meal threshold most of these products do not come close to touching. Here is the number, the five myths that have to come off the table first, and how to read any label in about five seconds.
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Chapters
00:00 - Introduction: what a high protein label promises
01:03 - Protein-ification and the labeling gap
04:10 - Myth 1: protein and kidney function
06:01 - Myth 2: the 0.8 gram RDA
07:04 - Nitrogen balance and the 2026 guideline change
07:45 - Where the clinical target lands above the RDA
08:43 - Myth 3: acid ash and bone density
11:01 - Myth 4: leucine and the per meal threshold
12:12 - Four product categories in your pantry
14:44 - The 25 to 30 gram complete protein rule
15:08 - Myth 5: daily total versus per meal distribution
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.

A Navy captain with 24 years of service went to medical for exhaustion, weight gain, and low mood, and was told to see a therapist and eat less. When he asked for a testosterone test his physician asked whether he had erectile dysfunction, and refused to order it when he said no. His level came back at 160; the cutoff we use in this country is 300. I've treated this population for 15 years, and roughly 27% of operators test below that number. Tim Parlatore is the attorney who wrote the Pentagon memo that now puts testosterone on the annual physical, and we get into what it says and why most men never have this hormone checked again after they leave pediatrics.
Studies & References
Cardiovascular Safety of Testosterone-Replacement Therapy - https://pubmed.ncbi.nlm.nih.gov/37326322/
You Can Conquer Trauma and PTSD with Chris Frueh, PhD - https://www.youtube.com/watch?v=0olunOZM2lc

Support Kaczkowski Family's GoFundMe campaign
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📱Connect with Tim Parlatore:
Website: https://parlatorelawgroup.com/
YouTube: https://www.youtube.com/channel/UCSSQE0_WrlegQk09nFi4QZw
Instagram: https://www.instagram.com/tparlatore/
Facebook: https://www.facebook.com/tparlatore
X.com: https://x.com/timparlatore
LinkedIn: https://www.linkedin.com/in/timothy-parlatore/
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⏰Timestamps:
00:00 - Intro of show
02:32 - Why military service lowers testosterone
04:15 - Treated like an anabolic steroid
06:52 - Screening first, not bodybuilding
08:07 - 27% of operators test low
09:34 - The three groups of users
10:52 - The BUD/S student who died
13:00 - A captain's testosterone was 160
15:39 - Denied the test, then the wait
18:58 - Why men skip baseline testing
19:46 - Beyond operators: the wider force
21:56 - The three effects on the force
26:37 - The best biomarker for men
27:40 - Why they wanted a study first
29:04 - Health, media, and politics
37:44 - Testing and treating women
44:57 - Voluntary treatment and options
48:20 - The friend Tim lost
51:00 - Selling the science to the Pentagon
53:00 - Building a research dataset
1:05:29 - Naval Academy to defending Gotti
1:11:54 - Trial as psychological warfare
1:21:03 - The fitness turnaround
1:26:02 - The email spying scandal
1:31:06 - "I am the storm"
1:35:32 - Prosecutorial misconduct
1:41:11 - Secondary trauma and the human cost
‼️Disclaimer: 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.
This episode includes paid sponsorships.

You might think creatine is a bodybuilder's steroid you have to cycle, load, and fear for your kidneys, but it's a compound your own body already makes from three amino acids, with one of the deepest safety records in all of nutrition science. The problem isn't the creatine; it's the noise around it.
In this solo episode, Dr. Gabrielle Lyon discusses:
Why the bump creatine causes in your creatinine lab value is a metabolic artifact, not a sign of kidney damage in healthy people
Where the hair-loss fear came from. A single unreplicated study in one rugby player showing a 56% DHT rise, and why no research has ever directly linked creatine to hair loss
How men and women respond differently (roughly 1.5 kg of lean mass in men vs. about a third of a kilogram in women), and why women still gain real strength, grip, cognition, and recovery
Why you can't realistically eat your way to 5 grams a day: it would take 2.5 to 3 pounds of cooked meat and fish daily, so a single scoop closes the gap
The protocol: 3–5 grams of plain monohydrate every day, no loading phase, no cycling, timing barely matters

Muscle is your organ of longevity, the tissue that clears most of the glucose in your bloodstream and defends your metabolism as you age. Creatine won't build it for you, but it raises the ceiling on the work you can do, so the training that protects that muscle pays off more. Understanding what's real and what's fearmongering is the difference between avoiding a proven tool and using it well.
Studies & References
PubMed study: https://pubmed.ncbi.nlm.nih.gov/1327657/
Sports Nutrition Society: https://www.sportsnutritionsociety.org/

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

Chapters
00:00 - Introduction
02:47 - What Creatine Is and Isn't
03:24 - The Phosphocreatine Energy System
04:22 - Lean Mass: Water and Training Capacity
05:08 - Men vs Women Respond Differently
06:29 - Vegans, Older Adults, and Sarcopenia
07:11 - Creatine and the Brain
08:53 - The Real Safety Profile
09:31 - The Kidney and Creatinine Myth
09:57 - The 56% DHT Hair Loss Claim
10:37 - Contraindications and Screening
12:19 - Why You Can't Eat Enough Creatine
14:26 - Muscle-Centric Medicine
16:44 - How to Dose It Correctly
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.