Barbell Medicine Podcast

Most women in 2026 are told menopause affects everything, the weight, the belly fat, the bones, the heart, the brain, and that the fix is hormones, supplements, and a proprietary protocol. The data tell a different story. Menopause does some of it, but not all of it.

In this episode, Dr. Jordan Feigenbaum and Dr. Austin Baraki, with OB-GYN Dr. Loraine Baraki at the clinical handoffs, put real numbers on what menopause actually changes, e.g. body composition, the cardiometabolic shift around the final menstrual period, bone, cognition and sleep — and on the single biggest modifiable lever against what actually kills postmenopausal women.

This is Episode 3 of Barbell Medicine's four-part menopause series.

Timestamps:
01:23 Intro 
02:45 Body composition & the SWAN study 
04:16 How much weight gain is really menopause?
 06:55 The answer: about 1.5 kg 08:14 Subcutaneous vs visceral fat
 11:08 Why waist beats weight (and body-fat %) 
17:21 Does menopause crash your metabolism? 19:02 Clinic: MHT for body composition 
23:51 Dr. Loraine Baraki — MHT, weight & testosterone 
27:29 The cardiometabolic shift: cholesterol at the FMP 
30:18 Insulin resistance & metabolic syndrome 
33:12 Blood pressure & 10-year heart risk 
34:54 Clinic: the "estrogen crisis" lipid panic 
39:13 Bone: the advice vs the data 40:34 Why DXA misses most fractures 
41:24 LIFTMOR: lifting heavy with low bone density 
44:47 The LIFTMOR results 
46:53 Lifting vs Pilates, and falls 
52:17 Clinic: "Should I be deadlifting?" 
56:14 Cognition & brain fog 
57:50 Why brain fog is mostly a sleep problem 
59:17 Clinic: brain fog, night sweats, broken sleep 
1:03:06 Depression & dementia in midlife 
1:05:43 Does hormone therapy protect the brain? 
1:08:53 Clinic: "Am I getting early dementia?" 
1:13:19 Dr. Loraine Baraki — the timing hypothesis & the brain
1:16:15 What actually kills postmenopausal women 
1:17:31 Fitness: the biggest mortality lever 
1:20:21 Strength, power & grip 
1:25:15 Clinic: where to start when you're overwhelmed 
1:30:41 The detraining problem 
1:32:38 Trained vs untrained: what's recoverable 
1:34:53 The actual plan 
1:39:48 Takeaways

Resources:

Subscribe to BBM Plus for the full unabridged Direct Line: https://barbellmedicine.supercast.com/

Barbell Medicine coaching and templates: https://www.barbellmedicine.com/

Signal book pre-order: https://www.barbellmedicine.com/shop/learning/signal/

Body composition & metabolism

 Greendale et al., SWAN body composition, JCI Insight 2019: https://doi.org/10.1172/jci.insight.124865

 Lovejoy et al., visceral fat across the transition, Int J Obes 2008: https://doi.org/10.1038/ijo.2008.25

 Pontzer et al., daily energy expenditure across life, Science 2021: https://doi.org/10.1126/science.abe5017

 Karppinen et al., metabolism in midlife women, Eur J Prev Cardiol 2023: https://doi.org/10.1093/eurjpc/zwad177

Cardiometabolic

Matthews et al., lipid changes & the menopause transition, JACC 2009: https://doi.org/10.1016/j.jacc.2009.10.009

Janssen et al., menopause & metabolic syndrome (SWAN), Arch Intern Med 2008: https://doi.org/10.1001/archinte.168.14.1568

 El Khoudary et al., AHA Scientific Statement on midlife women, Circulation 2020: https://doi.org/10.1161/CIR.0000000000000912

Bone

Greendale et al., SWAN bone loss across the FMP, JBMR 2012: https://doi.org/10.1002/jbmr.534

 Siris et al., undiagnosed low BMD & fractures (NORA), JAMA 2001: https://doi.org/10.1001/jama.286.22.2815

 Watson et al., LIFTMOR, JBMR 2018: https://doi.org/10.1002/jbmr.3284

Kemmler et al., EFOPS 16-year, Menopause 2017: https://doi.org/10.1097/GME.0000000000000720

Kistler-Fischbacher et al., MEDEX-OP, JBMR 2021: https://doi.org/10.1002/jbmr.4334

 Sherrington et al., exercise for preventing falls, Cochrane 2019: https://doi.org/10.1002/14651858.CD012424.pub2

ACSM Position Stand: Osteoporosis and Exercise, Med Sci Sports Exerc 1995;27(4):i–vii (no DOI)

Cognition & mood

Greendale et al., SWAN cognition, Neurology 2009: https://doi.org/10.1212/WNL.0b013e3181a71193

Kravitz et al., sleep in midlife women, Obstet Gynecol Clin North Am 2018: https://doi.org/10.1016/j.ogc.2018.07.008

Cohen et al., Harvard Study of Moods and Cycles, Arch Gen Psychiatry 2006: https://doi.org/10.1001/archpsyc.63.4.385

Bromberger & Kravitz, mood and menopause (SWAN), Obstet Gynecol Clin North Am 2011: https://doi.org/10.1016/j.ogc.2011.05.011

Livingston et al., Lancet Commission on dementia 2024: https://doi.org/10.1016/S0140-6736(24)01296-0

Shumaker et al., WHIMS (estrogen+progestin & dementia), JAMA 2003: https://doi.org/10.1001/jama.289.20.2651

 Espeland et al., WHIMS (estrogen-alone & cognition), JAMA 2004: https://doi.org/10.1001/jama.291.24.2959

Gleason et al., KEEPS-Cog, PLoS Med 2015: https://doi.org/10.1371/journal.pmed.1001833

 Henderson et al., ELITE (timing hypothesis & cognition), Neurology 2016: https://doi.org/10.1212/WNL.0000000000002980

USPSTF, hormone therapy for primary prevention, JAMA 2022: https://doi.org/10.1001/jama.2022.18625

Fitness & mortality

 Mandsager et al., cardiorespiratory fitness & mortality, JAMA Netw Open 2018: https://doi.org/10.1001/jamanetworkopen.2018.3605

Kodama et al., fitness & mortality meta-analysis, JAMA 2009: https://doi.org/10.1001/jama.2009.681

Sui et al., fitness & adiposity in older adults, JAMA 2007: https://doi.org/10.1001/jama.298.21.2507

Momma et al., muscle-strengthening activity & mortality, Br J Sports Med 2022: https://doi.org/10.1136/bjsports-2021-105061

Araújo et al., muscle power vs strength & mortality (CLINIMEX), Mayo Clin Proc 2025: https://doi.org/10.1016/j.mayocp.2025.02.015

Leong et al., grip strength & mortality (PURE), Lancet 2015: https://doi.org/10.1016/S0140-6736(14)62000-6

Detraining & trained-vs-untrained

Troiano et al., accelerometer-measured activity, Med Sci Sports Exerc 2008: https://doi.org/10.1249/mss.0b013e31815a51b3

Fleg et al., aerobic-capacity decline (BLSA), Circulation 2005: https://doi.org/10.1161/CIRCULATIONAHA.105.545459

Janssen et al., skeletal muscle mass across adulthood, J Appl Physiol 2000: https://doi.org/10.1152/jappl.2000.89.1.81

 Pollock et al., master athletes & aerobic capacity, J Appl Physiol 1987: https://doi.org/10.1152/jappl.1987.62.2.725

Latella et al., strength across ages in powerlifters, Sports Med 2024: https://doi.org/10.1007/s40279-023-01962-6

Our Sponsors:
* Check out Chilipad and use my code sleep.me/BBM for a great deal: https://sleep.me
* Check out FIGS and use my code FIGSRX for a great deal: https://wearfigs.com
* Check out Factor and use my code factormeals.com/bbm50off for a great deal: https://www.factor75.com
* Check out Quince and use my code quince.com/bbm for a great deal: https://www.quince.com

Advertising Inquiries: https://redcircle.com/brands

The story goes that hard exercise is risky for women, and that the idea is ancient. Both halves fall apart on contact. In this solo episode, Dr. Jordan Feigenbaum follows the claim that physical effort harms the female body across twenty centuries, and shows that almost every version of it arrived as a verdict first, with the science bolted on afterward.
It runs from antiquity to the present: what Galen actually wrote, why Sparta trained its women on purpose, the Victorian “vital force” panic and Edward Clarke’s claim that studying would sterilize girls, the doctor who prescribed bed rest to women and the wilderness to men, and the 1928 Olympic 800m that was erased for 32 years over a collapse that never happened. Then the correction: the research that finally tested heavy training in older women and women with low bone mass, and what it found. The episode closes on 2026, where the guidelines say lift and the menopause market often says don’t.
What we cover
•    Why the “ancient Greeks” origin story for the no-hard-exercise rule doesn’t hold up.
•    How a Victorian energy-budget idea became a medical case against women lifting and studying.
•    The real story of the 1928 Olympic women’s 800m and the 32-year ban.
•    The strong women who were relabeled as freaks or exceptions instead of counted.
•    What Fiatarone’s nonagenarians and LIFTMOR actually showed about lifting heavy later in life.
•    The cortisol panic, the fasting scare, and cycle syncing, examined against the data.
•    Why the cautious messaging now comes from the market, not the medical guidelines.

Timestamps
00:00 The 1928 Olympic “massacre” that never happened
03:37 Antiquity: what the Greeks actually said
06:50 The Victorians and “vital force”
10:02 Mary Putnam Jacobi tests the claim, and is ignored
11:53 1928 in full: who killed the women’s 800m
13:53 The double standard, and Alice Milliat
15:39 The strong women history relabeled
20:26 The correction: what the evidence shows
22:27 LIFTMOR: lifting heavy with low bone mass
24:35 2026: guidelines, the market, and cortisol
28:34 Cycle syncing, and naming the pattern
30:40 What to take away

Subscribe to BBM Plus for the full unabridged Direct Line: https://barbellmedicine.supercast.com/

Barbell Medicine coaching and templates: https://www.barbellmedicine.com/

Signal book pre-order: https://www.barbellmedicine.com/shop/learning/signal/

References
Cahn S. Coming on Strong: Gender and Sexuality in Twentieth-Century Women's Sport. Harvard University Press; 1994.
Clarke EH. Sex in Education; or, A Fair Chance for the Girls. Boston: James R. Osgood and Company; 1873.
Colenso-Semple LM, McKendry J, Lim C, et al. Menstrual cycle phase does not influence muscle protein synthesis or whole-body myofibrillar proteolysis in response to resistance exercise. J Physiol. 2025. PMID: 39630025.
Daly W, Hackney AC. Is exercise cortisol response of endurance athletes similar to levels of Cushing's syndrome? J Sports Med Phys Fitness. 2019. PMID: 31371847.
Eastell R, Rosen CJ, Black DM, Cheung AM, Murad MH, Shoback D. Pharmacological management of osteoporosis in postmenopausal women: an Endocrine Society clinical practice guideline. J Clin Endocrinol Metab. 2019;104(5):1595-1622. PMID: 30907953.
Fiatarone MA, Marks EC, Ryan ND, Meredith CN, Lipsitz LA, Evans WJ. High-intensity strength training in nonagenarians: effects on skeletal muscle. JAMA. 1990;263(22):3029-3034. PMID: 2342214.
Fiatarone MA, O'Neill EF, Ryan ND, et al. Exercise training and nutritional supplementation for physical frailty in very elderly people. N Engl J Med. 1994;330(25):1769-1775.
Galen. On the Preservation of Health (De Sanitate Tuenda). 2nd century CE. Various translations.
Jacobi MP. The Question of Rest for Women During Menstruation. New York: G.P. Putnam's Sons; 1877. (Awarded the Harvard Boylston Prize.)
Latella C, Teo WP, Spathis J, et al. Using powerlifting athletes to determine strength adaptations across ages in males and females: a longitudinal growth modelling approach. Sports Med. 2024;54(3):753-774.
Maudsley H. Sex in mind and in education. Fortnightly Review. 1874;15:466-483.
Plutarch. Life of Lycurgus. Approx. 75 CE. Various translations.
Schultz J. Qualifying Times: Points of Change in U.S. Women's Sport. Urbana: University of Illinois Press; 2014.
Sinaki M, Mikkelsen BA. Postmenopausal spinal osteoporosis: flexion versus extension exercises. Arch Phys Med Rehabil. 1984;65(10):593-596. PMID: 6487063.
Soranus of Ephesus. Gynecology. Approx. 2nd century CE. Translated by Temkin O. Baltimore: Johns Hopkins University Press; 1991.
Switzer K. Marathon Woman: Running the Race to Revolutionize Women's Sports. Cambridge, MA: Da Capo Press; 2007.
Todd J. Various publications. Iron Game History. Stark Center for Physical Culture and Sports, University of Texas at Austin.
Tunis JR. Women and the Olympic Games. Harper's Magazine. July 1929. (And contemporaneous press coverage.)
Watson SL, Weeks BK, Weis LJ, Harding AT, Horan SA, Beck BR. High-intensity resistance and impact training improves bone mineral density and physical function in postmenopausal women with osteopenia and osteoporosis: the LIFTMOR randomized controlled trial. J Bone Miner Res. 2018;33(2):211-220. PMID: 30861219.
Xenophon. Constitution of the Lacedaemonians. Approx. 4th century BCE. Various translations.

Our Sponsors:
* Check out Chilipad and use my code sleep.me/BBM for a great deal: https://sleep.me
* Check out FIGS and use my code FIGSRX for a great deal: https://wearfigs.com
* Check out Factor and use my code factormeals.com/bbm50off for a great deal: https://www.factor75.com
* Check out Quince and use my code quince.com/bbm for a great deal: https://www.quince.com

Advertising Inquiries: https://redcircle.com/brands

In 1889 a French physiologist injected himself with guinea pig and dog testicle extract and published a claim of self-rejuvenation in The Lancet. That announcement kicked off a 200-year medicalization of menopause that ran through leeches and bromides, Premarin, the 2002 Women's Health Initiative, and the contemporary menopause-content space. 
In Episode 1 of our three-part menopause series, Dr. Jordan Feigenbaum and Dr. Austin Baraki walk through what menopause actually is at the hormonal level, which midlife symptoms are menopause-driven and which are not, the KNDy neuron mechanism behind hot flashes (and the new medication that blocks it), and the 24-year follow-up on the WHI that substantially revised the original conclusions. OB-GYN Dr. Loraine Baraki walks the clinical workup, the lab panel she actually orders, and how she handles patients arriving with DUTCH panels and compounded hormone protocols.
If you have heard contradictory things about menopause hormone therapy from your primary care, your menopause coach, and your sister, that is not your fault. The evidence base has been revised in significant ways since the 2002 publication, and most patient-facing summaries are out of date.
Timestamps
00:00 Cold open: 200 years of menopause medicine
03:23 Welcome and roadmap
04:20 The HPG axis, follicles, and the FSH lag
09:11 STRAW+10 staging and the timing of perimenopause
13:47 Austin: the 49-year-old with a hormone panel
20:00 Loraine: the OB-GYN workup
28:00 Symptom attribution: what menopause actually causes
33:46 Austin: the all-estrogen patient
37:58 VMS duration and the KNDy mechanism (Avis, SKYLIGHT)
43:53 Austin: who actually gets fezolinetant
47:22 The WHI 24-year correction (Manson, Chlebowski, Boardman)
01:00:15 Modern prescribing today
01:06:52 Where the menopause-content space gets it right and wrong
01:11:50 Testosterone, compounded bioidenticals, and DUTCH panels
01:24:13 Takeaways
What we cover

The HPG axis and the estrogen shield: what is happening across the 35-year reproductive era and what changes at perimenopause.
STRAW+10 staging: how long perimenopause actually lasts and where most women fall in the timeline.
 Symptom attribution: hot flashes and genitourinary syndrome are menopause. Weight gain, sleep, and joint pain are mostly other things.
The KNDy neuron mechanism behind hot flashes and the new pharmacology that blocks it (fezolinetant, elinzanetant).
The Women's Health Initiative: what the trial actually tested, what the 2002 result said, and what 24 years of follow-up have shown since then. The estrogen-alone arm reduced breast cancer incidence by 22% and mortality by 40% over 20 years.
The timing hypothesis: hormone therapy started within 10 years of the final menstrual period vs more than 10 years out.
Modern prescribing today: transdermal estradiol plus micronized progesterone, and why the formulations matter.
Where the contemporary menopause-content space gets it right and wrong: the undertreatment problem, the zone-of-chaos framing, and the testosterone-for-everything marketing.
Testosterone in women: one guideline-supported indication.
Compounded bioidenticals and DUTCH panels.

Resources
Subscribe to BBM Plus for the full unabridged Direct Line: https://barbellmedicine.supercast.com/
Barbell Medicine coaching and templates: https://www.barbellmedicine.com/
Signal book pre-order: https://www.barbellmedicine.com/shop/learning/signal
Manson JE et al. 18-year mortality from the WHI. JAMA, 2017. https://pubmed.ncbi.nlm.nih.gov/28898378/
Chlebowski RT et al. WHI estrogen-alone arm at 20 years. JAMA, 2020. https://pubmed.ncbi.nlm.nih.gov/32706854/
 Boardman HMP et al. Hormone therapy for cardiovascular prevention. Cochrane, 2015. https://pubmed.ncbi.nlm.nih.gov/25754617/
Avis NE et al. Duration of VMS in the SWAN cohort. JAMA Intern Med, 2015. https://pubmed.ncbi.nlm.nih.gov/25686030/
Lederman S et al. SKYLIGHT 1, fezolinetant. The Lancet, 2023. https://pubmed.ncbi.nlm.nih.gov/36924778/
Johnson KA et al. SKYLIGHT 2, fezolinetant. JCEM, 2023. https://pubmed.ncbi.nlm.nih.gov/37410020/
USPSTF. Hormone therapy for primary prevention. JAMA, 2022. https://pubmed.ncbi.nlm.nih.gov/36318127/
Davis SR et al. Global Consensus on testosterone in women. JCEM, 2019. https://pubmed.ncbi.nlm.nih.gov/31498871/

Our Sponsors:
* Check out Chilipad and use my code sleep.me/BBM for a great deal: https://sleep.me
* Check out FIGS and use my code FIGSRX for a great deal: https://wearfigs.com
* Check out Factor and use my code factormeals.com/bbm50off for a great deal: https://www.factor75.com
* Check out Quince and use my code quince.com/bbm for a great deal: https://www.quince.com

Advertising Inquiries: https://redcircle.com/brands

This is the free preview of the May 2026 Direct Line, our monthly AMA for Barbell Medicine Plus subscribers. Three reader questions answered in full.
We open with a mid-30s woman with bilateral shin pain and exertional foot numbness who started creatine a month ago and is asking whether the supplement is the cause. We walk through the compartment syndrome literature, the 2025 case report being passed around online and misinterpreted, what creatine actually does to total body water (and what it doesn’t), the four compartment pressure studies that exist, the Waterman 2013 demographic data on who actually gets chronic exertional compartment syndrome, and the workup we would actually run if this person walked into clinic.
Next, whether splitting your resistance training across the day affects strength and hypertrophy. We cover BBM’s general heuristic on frequency as a distribution tool for training load, the Schoenfeld meta-analyses on frequency (2016 and 2019), the wrinkle on cardiorespiratory fitness and exercise snacks, and where we go off the reservation compared to a strict evidence-based read.
We close with endometriosis for the lifter, including the seven-year average diagnostic delay, the 2022 ESHRE guideline shift away from required laparoscopy, what the menstrual cycle and performance literature actually says (McNulty 2020), why the anti-inflammatory diet narrative is mostly noise, the iron and protein levers that matter, post-operative return-to-lifting timelines, the meet-timing question, and Austin’s clinical case walk on supplement stacks and GLP-1 anti-inflammatory effects. A dedicated full episode on endometriosis is coming this summer.
The full unabridged Direct Line covers ten more questions, including where the GLP-1 strength trials actually are, why DEXA misleads on muscle mass loss, how we arrived at the Vital 5 weightings, the salt sermon for strongman, running shoes for casual runners, hernias and crunches in older lifters, the Bristol Stool Chart, Austin on coaching his residents, and a fresh reading list. Full episode on BBM Plus.
Timestamps:
Question 1 · Creatine and shin pain01:2713:21
Question 2 · Splitting your workout across the day13:2120:29
Question 3 · Endometriosis for the lifter20:29
What we cover:
The clinical workup for chronic exertional compartment syndrome and why creatine is rarely the culprit. The Schoenfeld frequency literature and why training load matters more than the day it’s distributed across. Endometriosis basics including diagnostic delay, prevalence, and the 2022 ESHRE guideline change. Why most endometriosis “diets” don’t have evidence behind them, and which nutrition levers actually matter (iron, protein, energy availability). Post-operative return to training, meet-timing options, supplement stacks, and the role of GLP-1 receptor agonists in chronic anti-inflammatory effects.
Resources:
Subscribe to BBM Plus for the full unabridged Direct Line: https://barbellmedicine.supercast.com/

Barbell Medicine coaching and templates: https://www.barbellmedicine.com/

Signal book pre-order: https://www.barbellmedicine.com/shop/learning/signal/

Waterman B.R. et al. 2013. Risk factors for chronic exertional compartment syndrome in a physically active military population. Am J Sports Med 41(11):2545-2552.
https://pubmed.ncbi.nlm.nih.gov/24036570/

Powers M.E. et al. 2003. Creatine supplementation increases total body water without altering fluid distribution. J Athl Train 38(1):44-50.
https://pubmed.ncbi.nlm.nih.gov/12937471/

Antonio J. et al. 2021. Common questions and misconceptions about creatine supplementation (ISSN position). J Int Soc Sports Nutr 18(1):13.
https://pubmed.ncbi.nlm.nih.gov/33557850/

Bruneau A. et al. 2025. Creatine supplementation associated with chronic exertional compartment syndrome: case report. [TO ADD: PMID once indexed]

Schoenfeld B.J. et al. 2016. Effects of resistance training frequency on measures of muscle hypertrophy: a systematic review and meta-analysis. Sports Med 46(11):1689-1697.
https://pubmed.ncbi.nlm.nih.gov/27102172/

Schoenfeld B.J. et al. 2019. How many times per week should a muscle be trained to maximize hypertrophy? J Sports Sci 37(11):1286-1295.
https://pubmed.ncbi.nlm.nih.gov/30558493/

ESHRE Endometriosis Guideline Development Group. 2022. ESHRE guideline: endometriosis. Hum Reprod Open 2022(2):hoac009.
https://pubmed.ncbi.nlm.nih.gov/35350465/

McNulty K.L. et al. 2020. The effects of menstrual cycle phase on exercise performance in eumenorrheic women: systematic review and meta-analysis. Sports Med 50(10):1813-1827.
https://pubmed.ncbi.nlm.nih.gov/32661839/

Our Sponsors:
* Check out Chilipad and use my code sleep.me/BBM for a great deal: https://sleep.me
* Check out FIGS and use my code FIGSRX for a great deal: https://wearfigs.com
* Check out Factor and use my code factormeals.com/bbm50off for a great deal: https://www.factor75.com
* Check out Quince and use my code quince.com/bbm for a great deal: https://www.quince.com

Advertising Inquiries: https://redcircle.com/brands

Most cases of low testosterone in modern men are not a problem with the testes. The number is downstream of body composition, sleep, and energy availability. The wellness-clinic algorithm walks past every one of them.

Jordan and Austin walk through what actually drives men’s testosterone down, the mechanisms behind it, and the modifiable levers that bring it back up. MOSH, the leptin and Kisspeptin pathway, the aromatase loop, the sleep apnea picture most clinics never ask about, the GLP-1 and weight-loss data on testosterone recovery, the low energy availability case that hits high-volume lifters harder than they realize, and the closing question of when a standard-dose TRT prescription actually functions as a PED.
This is Episode 3 of our four-part Signal book launch series. Mark, the patient we have been threading from Episode 1, finally gets his diagnosis revealed.
Timestamps
00:00 The 9x stat and Mark's diagnosis revealed
 02:10 How body fat suppresses testosterone (MOSH)
 07:26 Primary vs secondary causes, and Klinefelter
 11:35 Leptin and the Kisspeptin pathway
 14:38 Mark: the body-composition picture
 16:10 The 40-inch-waist case
 20:01 Weight loss, GLP-1s, and does Ozempic raise testosterone?
 24:21 T4DM: adding testosterone to lifestyle
 28:35 Sleep, OSA, and Mark's diagnosis
 38:39 TRT in untreated sleep apnea
 41:47 Can you train your testosterone down? (LEA / EHMC)
 50:12 Replacement dose vs PED
 55:47 Four takeaways
 57:46 Episode 4 preview and book pre-order

What we cover:
•         How body fat suppresses testosterone at two different points in the HPG axis, and why the loop is self-reinforcing
•         The leptin and Kisspeptin pathway most clinics never address
•         Mark’s case: a 45-year-old with a 240 ng/dL afternoon draw, no workup, and an immediate prescription
•         Primary versus secondary causes, and why Klinefelter syndrome is the under-recognized one to not miss
•         Weight loss dose-response: how much testosterone climbs on lifestyle alone, with GLP-1 agonists, and after bariatric surgery
•         T4DM: why adding testosterone to a structured weight-loss program produced no extra quality-of-life benefit over placebo
•         One week of sleep restriction drops testosterone by about 15 percent in healthy young men; eight days of military field exercises drop it by 50 percent
•         Why CPAP for obstructive sleep apnea reliably improves symptoms but does not always move the lab number
•         The opposite extreme: low energy availability, relative energy deficiency in sport, and the exercise-hypogonadal male condition
•         The lifter calculus: when a textbook replacement dose is functionally a PED in a chronically underfueled trainee

Resources mentioned:
Signal book pre-order: https://barbellmedicine.com/signal
 Training Plateau Action Plan (free): https://www.barbellmedicine.com/training-plateau-action-plan/
 Barbell Medicine programs and coaching: https://www.barbellmedicine.com/
 Episode 1 (Is the Testosterone Crisis Real?)
 Episode 2 (Is Your Testosterone Actually Low?

Referenced studies:

Wu F.C.W. et al. 2010. Identification of late-onset hypogonadism in middle-aged and elderly men (EMAS). N Engl J Med 363(2):123-135.
 https://pubmed.ncbi.nlm.nih.gov/20554979/
 
 Travison T.G. et al. 2011. The natural history of symptomatic androgen deficiency in men. J Am Geriatr Soc.
 https://pubmed.ncbi.nlm.nih.gov/18454751/
 
 Corona G. et al. 2013. Body weight loss reverts obesity-associated hypogonadotropic hypogonadism: systematic review and meta-analysis. Eur J Endocrinol 168(6):829-843.
 https://pubmed.ncbi.nlm.nih.gov/23482592/
 
 Kounatidis D. et al. 2025. The impact of GLP-1 receptor agonists on erectile function. Biomolecules 15(9):1284.
 https://doi.org/10.3390/biom15091284
 
 Grossmann M. et al. 2024. Testosterone treatment, weight loss, and health-related quality of life and psychosocial function in men: 2-year RCT (T4DM QoL arm). J Clin Endocrinol Metab 109(8):2019-2028.
 https://pubmed.ncbi.nlm.nih.gov/38311835/
 
 Leproult R., Van Cauter E. 2011. Effect of 1 week of sleep restriction on testosterone levels in young healthy men. JAMA 305(21):2173-2174.
 https://pubmed.ncbi.nlm.nih.gov/21632481/
 
 Penev P.D. 2007. Association between sleep and morning testosterone levels in older men. Sleep 30(4):427-432.
 https://pubmed.ncbi.nlm.nih.gov/17520785/
 
 Wittert G. 2014. The relationship between sleep disorders and testosterone in men. Asian J Androl 16(2):262-265.
 https://pubmed.ncbi.nlm.nih.gov/24435056/
 
 Alemany J.A. et al. 2008. Effects of dietary protein content on IGF-I, testosterone, and body composition during 8 days of severe energy deficit and arduous physical activity. J Appl Physiol 105(1):58-64.
 https://pubmed.ncbi.nlm.nih.gov/18450989/
 
 Mountjoy M., Sundgot-Borgen J.K., Burke L.M. et al. 2018. IOC consensus statement on relative energy deficiency in sport (RED-S): 2018 update. Br J Sports Med 52:687-697.
 https://pubmed.ncbi.nlm.nih.gov/29773536/
 
 Areta J.L. et al. 2021. Low energy availability: history, definition and evidence of its endocrine, metabolic and physiological effects in prospective studies in females and males. Eur J Appl Physiol 121(1):1-21.
 https://pubmed.ncbi.nlm.nih.gov/33095376/
 
 Mäestu J. et al. 2010. Anabolic and catabolic hormones and energy balance of the male bodybuilders during the preparation for the competition. J Strength Cond Res 24(4):1074-1081.
 https://pubmed.ncbi.nlm.nih.gov/20300023/
 
 Hooper D.R. et al. 2018. Treating exercise-associated low testosterone (EHMC). Phys Sportsmed 46(4):427-434.
 https://pubmed.ncbi.nlm.nih.gov/30074435/
 
 Hackney A.C. 2020. Hypogonadism in exercising males: dysfunction or adaptive-regulatory adjustment? Front Endocrinol 11:11.
 https://pubmed.ncbi.nlm.nih.gov/32082252/

Our Sponsors:
* Check out Chilipad and use my code sleep.me/BBM for a great deal: https://sleep.me
* Check out FIGS and use my code FIGSRX for a great deal: https://wearfigs.com
* Check out Factor and use my code factormeals.com/bbm50off for a great deal: https://www.factor75.com
* Check out Quince and use my code quince.com/bbm for a great deal: https://www.quince.com

Advertising Inquiries: https://redcircle.com/brands