The Dr. Gabrielle Lyon Show

How do the amino acids in a soy patty and a beef patty compare once they reach your blood?

In a trial he helped design, Dr. David Church matched a 4-ounce beef patty against a soy-based burger. He had to double the soy to roughly match the single beef patty in essential amino acids. The blood amino acid levels shocked him.

David joins me at Protein Summit 3.0 to explain what happened.

He also tells me why muscle protein breakdown is so much harder to measure than synthesis, and shares insights from his 21-day...

Protein has become a numbers game, and the numbers leave out the essential amino acids your muscle, brain and metabolism depend on. Protein is how you get them, and its quality may change how well you age.

In this episode, Dr. Gabrielle Lyon brings together some of her favorite moments with Dr. Don Layman, Dr. Heather Leidy and Dr. Jess Gwin to break down the essential amino acid requirement, cut through the confusion on protein quality (what a protein label leaves out, plant vs. animal sources, branched-chain amino acids, and leucine), and explain what the research says...

Eating before bed: harmful or helpful? Dr. Mike Ormsbee breaks down protein before bed, casein vs. whey, fat metabolism, sleep, and resistance training for postmenopausal women.

Late-night eating comes with many rules of thumb, and most people follow them without knowing what the research shows. Dr. Mike Ormsbee, a researcher at Florida State University, has spent years measuring how protein before bed affects metabolic rate, overnight fat burning, sleep, and recovery. If you lift, want to keep muscle as you age, or have been told to stop eating after dinner, his view on casein vs. whey and...

Childhood and adolescence provide a one-time biological opportunity: our kids' bodies are primed to grow, build tissue, and develop cognitive capacity. But to do that, they need the right raw materials.

In this video, we break down why restricting nutrient-dense foods in growing children puts their development at risk. We explore the critical role of highly bioavailable nutrients like heme iron and vitamin B12, how nutrient status directly impacts academic performance and attention, and why building muscle and metabolic reserve early protects your health decades later.

Don't wait until your children are 40 and struggling with...

What you choose to eat is the single most important decision you make every day—impacting your metabolic health, your family, the economy, and the future of our food supply.

In this episode, world-renowned cardiologist and nutrition expert Dr. Dariush Mozaffarian breaks down the "Food is Medicine" movement, cuts through dietary confusion (fats vs. carbs, food label marketing, and ultra-processed ingredients), and reveals how public demand, science, and policy can repair a broken food system. If you have ever felt overwhelmed in the grocery aisle or wondered how to separate real nutrition science from industry marketing, this co...

Protein is in everything right now: coffee, chips, cookies, bars. But despite the massive marketing hype, the world’s leading scientists are still debating fundamental questions about how much protein we actually need and how the body uses it. Fresh off the Protein Summit 3.0 at Texas A&M, Dr. Gabrielle Lyon breaks down what top researchers agreed on, why treating protein as a single number is a major mistake, and how to stop falling for "high-protein" health halos in the grocery store.

Find Dr. Gabrielle Lyon at:

Protein is in everything right now: co...

In this episode, board-certified anesthesiologist, researcher, and former Real Housewives of Dallas star Dr. Tiffany Moon pulls back the curtain on modern medicine, surgical pain management, and the reality of navigating elite academia. From addressing widespread public fears around clinical fentanyl use to detailing why she was branded an "embarrassment" by academic peers for appearing on reality television, Dr. Moon speaks candidly about breaking stereotypes, the gender pay gap in healthcare, and using a massive public platform to advocate for science and mentorship.

What You'll Learn In This Episode:

Can you tell someone's testosterone or estrogen levels just by looking at their face? Is "jawmaxxing" actually backed by science? In this video, we dive deep into the real science of hormones, physical attraction, and evolutionary biology.

We debunk popular myths around high testosterone, facial masculinity, and ovulation preferences, revealing what the research actually shows about human mate selection. Discover why facial structure isn't a hormone panel, how estrogen impacts skin and collagen as women age, and why physical strength accounts for 70% of perceived bodily attractiveness.

If you want to understand how hormones shape our...

When you have musculoskeletal pain, the natural instinct is to try and treat it directly. But the cause of that pain often starts somewhere else in the body.

I learned that from this week's guest, Dr. JJ Thomas, who is my physical therapist and good friend. She was my patient first, and now we are each other's patients. She has practiced physical therapy for more than 25 years and has worked with the Philadelphia 76ers, the Philadelphia Eagles, and athletes from the UFC and US Olympic programs.

What you'll learn in this episode:

Will I get too bulky?" No. "Is it too late?" Also no. Here's the context: during the menopause transition, women lose lean mass, gain fat, and their muscle becomes harder to build — the same workout and the same protein meal produce less than they did at 30. For years the only conversation has been hormone therapy, yes or no, as if that were the fix. In Part 2 of her menopause series, Dr. Gabrielle Lyon looks at what the evidence actually says builds muscle back.

In this episode:

-Postmenopausal women can build muscle and strength at...

Most patients are told one thing before surgery: stop all supplements. Duke surgeon Dr. Rebecca Knackstedt says that blanket advice can do harm, and that what you do in the days before surgery changes how you heal.

Dr. Knackstedt is a plastic and reconstructive microsurgeon on faculty at Duke, an MD-PhD researcher and a certified functional medicine provider whose research focuses on surgical prehabilitation: preparing the body, mind, and home before surgery, the way we already do with rehab.

In today’s episode, we discuss:

• What prehab looks like for any oper...

Menopause is changing your body, but the part nobody talks about isn't hot flashes. It's muscle. Women lose lean mass fastest in perimenopause, the loss probably starts closer to 35, and no pill, patch or injection fixes it.

In this solocast, Dr. Gabrielle Lyon explains what estrogen, testosterone and FSH actually do to your metabolism, why a 50-year-old body can still build muscle, and the training and protein protocol to start now.

Join the Menopause Challenge →

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[Use Code 25OFF through Sept 27]

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Your testosterone number matters at every age, but most men never learn what theirs should be. Mayo Clinic urologist Dr. Tobias Kohler explains why ~500 is the target, why 1,000 is already running hot, what 2,000+ does to the heart, and why a randomized trial found lifting without steroids beat steroids without lifting. Plus: the blood test that catches heart risk your cholesterol panel misses.

Dr. Kohler returns for his second appearance (his first, on erections, testosterone and muscle mass, is one of the most-watched episodes in the show's history). This time: why men's longevity is roughly 50 years...

Your testosterone number matters at every age, but most men never learn what theirs should be. Mayo Clinic urologist Dr. Tobias Kohler explains why ~500 is the target, why 1,000 is already running hot, what 2,000+ does to the heart, and why a randomized trial found lifting without steroids beat steroids without lifting. Plus: the blood test that catches heart risk your cholesterol panel misses.

Dr. Kohler returns for his second appearance (his first, on erections, testosterone and muscle mass, is one of the most-watched episodes in the show's history). This time: why men's longevity is roughly 50 years behind women's...

You say "steroids" and picture a baseball scandal, a jacked guy, a bad spray tan. But cortisol is a steroid. Estrogen is a steroid. The cream you put on poison ivy is a steroid. The word covering all of them is also covering testosterone therapy for women, and that collision is quietly costing women muscle and bone they don't have to lose.

In this solo episode, prompted by a magazine interview on steroid use in women, Dr. Gabrielle Lyon breaks down what these molecules actually are, what they do inside a cell, and why the line between...

Most people assume becoming a parent is an emotional change, but a measurable part of it is hormonal, and it happens in fathers too. I sat down with Aldrich Chan, Psy.D., to talk about what changes in the brain, why the split we draw between mind and body does not hold up, and what decides whether stress reads as manageable or overwhelming when the hormones are identical either way.

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Get Aldrich Chan’s books here:

https://www.drchancnc.com/bo...

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...

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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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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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...

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:

Most of what we call "aging" may not be about time at all. It may be a nervous system stuck in stress, quietly draining your sleep, your recovery, and your long-term health.

In this episode, Dr. Gabrielle Lyon sits down with Dr. Kristen Holmes to discuss:

Blowing four times the legal limit on a breathalyzer usually means one thing, but in 2015, a judge dismissed a DWI because the driver's own gut was fermenting alcohol from an ordinary carb-heavy dinner. It's called auto-brewery syndrome, and the fuel it runs on is the same load your muscle is supposed to be clearing from your blood.

In this solo episode, Dr. Gabrielle Lyon discusses:

Most people chase happiness as a feeling and wait for certainty before making big decisions, and both instincts quietly backfire. Dr. Arthur Brooks joins Dr. Gabrielle Lyon to break down what happiness is and how to act on it.

In this episode, Dr. Gabrielle Lyon and Dr. Arthur Brooks discuss:

You might think the number dropping on the scale is the whole win, but on a GLP-1, a meaningful share of what you're losing may be muscle, not fat, and the fiber that's supposed to help can quietly make things worse.

In this solo episode, Dr. Gabrielle Lyon discusses:

You'd think fear is what stops you from doing hard things. At 25, with zero rowing experience, Taryn Smith crossed the Atlantic alone. 3,000 miles, 46 days, and I learned that the fear was never the obstacle. It was the signal she was finally in the right place.

In this episode, Dr. Gabrielle Lyon and Taryn Smith discuss:

You've probably worried that the glyphosate on your bread is slowly harming you. The evidence points somewhere far less obvious and far more fixable.

In this solo episode, Dr. Gabrielle Lyon discusses:

Most people think low back pain means something is wrong with their back. It's usually the hips — and the fix often starts on your living room floor.

In this episode, Dr. Gabrielle Lyon sits down with Dr. Kelly Starrett and Juliet Starrett, JD to discuss:

Over 500 published papers stand behind one of the internet's most popular peptides, but fewer than 30 of the humans studied are in them. Dr. Gabrielle Lyon separates the molecule from the marketplace so you can tell real evidence from good marketing.

In this solo episode, Dr. Gabrielle Lyon discusses:

Everyone on a GLP-1 is watching the scale; almost no one is watching their bones. Bone loss isn't an inevitable part of aging; it's a reversible signal that something deeper is going wrong, and it starts far earlier than most people are ever warned.

In this episode, Dr. Gabrielle Lyon sits down with Dr. Douglas Lucas, a former Stanford-trained orthopedic surgeon turned bone-health specialist, to discuss:

You've eaten red meat your whole life, so why does a steak dinner suddenly leave you covered in hives at 1 AM? A single Lone Star tick bite can rewire your immune system into a delayed allergy to red meat, and most people (and even their doctors) never connect the two.

In this solo episode, Dr. Gabrielle Lyon discusses:

Everyone celebrates the weight GLP-1s take off, almost no one warns you about the volume they quietly pull out of your face and the loose skin you can't train away. The fix depends entirely on the diagnosis, and knowing which category your concern falls into is what saves you time, money, and regret.

In this episode, Dr. Gabrielle Lyon sits down with Dr. Kristy Hamilton, a board-certified plastic surgeon, to discuss:

The longevity world has convinced a generation of women that protein is shortening their lives. The science says they've got it backwards and the people hurt most are the ones who need protein most.

In this episode, Dr. Gabrielle Lyon breaks down the protein-and-longevity fear, steelmans the strongest case against protein, then walks through what the evidence shows:

The parasites most Americans think of as a tropical problem are already here; showing up as fatigue, asthma, and gut issues that standard tests keep calling "normal." An estimated 1 in 20 people may carry one and never know it.

In this episode, Dr. Gabrielle Lyon sits down with Dr. Peter Hotez, a tropical-medicine physician and vaccine scientist, to discuss:

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:

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:

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:

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:

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 re...

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: