← all papers · hypogonadism (45) Science journalism, not medical advice.
- Low T From Stress Isn't Broken Testicles2026-07-15
Military and athlete studies suggest stress-related low testosterone is often reversible brain signaling, not testicular failure
Stress-associated testosterone suppression: central adaptation or hypogonadism? testosterone hypogonadism narrative review stress exercise
- Clomiphene Matches TRT's Testosterone Boost, Not Libido2026-07-11
Clomiphene raised testosterone about as well as TRT gel in 1,512 men, but libido scores came out lower
Clomiphene citrate versus testosterone replacement therapy in male hypogonadism: a systematic review of literature and meta-analysis hypogonadism testosterone therapy male infertility meta-analysis
- TRT and Heart Risk: Is a Gel Safer Than a Shot?2026-07-05
Low testosterone tracks with worse blood vessel markers, and TRT improves most of them, but gel vs. injection safety claims are still unproven
Circulating Markers of Cardiovascular Health in Hypogonadism Before and After Testosterone Therapy: Molecular Aspects and Formulation Comparison hypogonadism testosterone therapy cardiovascular disease vascular health biomarkers narrative review
- Testosterone After Prostate Cancer, Zero Recurrences2026-07-01
Testosterone restored sex drive in prostate cancer survivors, with zero recurrences in 136 men over 12 weeks
Testosterone Treatment in Prostate Cancer Survivors With Hypogonadism: A Randomized Clinical Trial hypogonadism testosterone therapy prostate cancer cancer survivors
- Lifelong Male Infertility Diagnosis Reverses in 1-in-102026-06-25
~10–15% of men with congenital hypogonadotropic hypogonadism spontaneously recover testosterone and fertility after stopping treatment
Reversible Congenital Hypogonadotropic Hypogonadism: Keys for Clinical Management hypogonadism male infertility genetics narrative review
- 75% of Klinefelter Cases Go Undiagnosed2026-06-24
A review argues Klinefelter syndrome wrecks more than fertility, yet up to 75% of cases go undiagnosed
Klinefelter syndrome beyond hypogonadism: multisystem manifestations and a framework for clinical surveillance hypogonadism cardiovascular disease testosterone therapy narrative review
- Most Low Testosterone Is Just Obesity2026-06-23
JAMA review puts obesity-driven low T (2–8% prevalence) well ahead of true gonadal failure (<1%), with weight loss as first-line.
Adult Male Hypogonadism: A Review hypogonadism testosterone obesity testosterone therapy narrative review
- New Ultrasound Spots Fertility Treatment Response Early2026-06-18
A super-resolution ultrasound scan detected testicular treatment response before blood hormone tests did
Ultrasound localisation microscopy tracks testicular microvascular adaptations to endocrine function in male infertility hypogonadism male infertility biomarkers case-control study
- Two Hormones Beat One for Azoospermic Men2026-06-16
74% of azoospermic men produced sperm on hormone therapy; combination outperformed monotherapy 78% vs 33%
Therapeutic Benefits of Gonadotropins in Male Hypogonadotropic Hypogonadism hypogonadism male infertility spermatogenesis retrospective cohort pregnancy
- One Testosterone Test Isn't Enough for ED2026-06-16
Lab review argues most ED workups over-order hormones and under-order glucose and lipids
High-value laboratory testing in erectile dysfunction, reduced sexual desire, and suspected hypogonadism: analytical pitfalls and selective biomarker use erectile dysfunction hypogonadism testosterone biomarkers narrative review
- Male Infertility's Default Drug May Be Wrong for Most2026-06-01
Opinion review argues clomiphene and aromatase inhibitors are empirically prescribed without endocrine phenotyping — and proposes gonadotropins instead
From Tablets to Targeted Therapy: The APHRODITE Era in Male Infertility male infertility hypogonadism spermatogenesis narrative review evidence quality
- Brain Immune Cells Gatekeep Fertility Hormones2026-05-21
Brain immune cells (microglia) use RANK signaling to control GnRH neurons — and rare RANK variants show up in 564 hypogonadism patients
Microglia Rank Signaling Regulates GnRH Neuronal Function and the Hypothalamic-Pituitary-Gonadal Axis hypogonadism infertility genetics animal study
- 1 in 5 Online Testosterone Clinics Invent Cardiovascular Benefits2026-05-19
253 testosterone clinic websites worldwide: 1 in 4 promote off-guideline treatments, 1 in 5 falsely claim cardiovascular benefits
Discordance Between Online Information and Male Hypogonadism Clinical Guidelines: A Global Multilingual Content Analysis hypogonadism testosterone therapy health services evidence quality
- Brain Tumors Trigger Both Early and Late Puberty2026-05-19
In 60 kids with intracranial germ cell tumors, 45% developed a puberty disorder—too early, too late, or both in sequence
Pubertal Dysfunctions in Intracranial Germ Cell Tumors hypogonadism pediatric urology retrospective cohort survivorship
- Testosterone Therapy May Raise Fracture Risk2026-05-16
TRAVERSE trial found higher fracture rates in men randomized to testosterone — a result the review calls "unexpected"
Testosterone and Bone Health in Men testosterone testosterone therapy hypogonadism evidence quality
- Melatonin for Low Testosterone: Interesting Theory, No Trials2026-05
Chinese TCM researchers propose melatonin could restore endogenous testosterone by repairing aging Leydig cells — supported by animal data and zero LOH clinical trials
From "Passive Supplementation" to "Active Repair": Melatonin Reshapes the Treatment Paradigm for Late-Onset Hypogonadism by Targeting Leydig Cell Senescence hypogonadism testosterone oxidative stress narrative review traditional chinese medicine
- One Gene Variant Ties Infertility, Ataxia, and Brain Cell Death2026-04-22
RNF216 loss-of-function variants kill cells via runaway autophagy — found in 2 of 1,476 HH patients
RNF216 Variants Found in Patients With Dementia, Hypogonadotropic Hypogonadism, and Severe Ataxia Deregulate Autophagy genetics hypogonadism neurodegenerative diseases autophagy
- Skipping Testosterone Therapy Raises Death Risk2026-04-22
In 408 men with pituitary tumors followed 8 years, TRT showed no increase in heart attack or stroke risk — but untreated low T was tied to higher mortality
Secondary Hypogonadism and Effects of Testosterone Replacement Therapy on Cardiovascular Events hypogonadism testosterone therapy cardiovascular disease cohort study
- Severe Sleep Apnea Suppresses Testosterone in Obese Men2026-04-22
62% of severely obese male inpatients had low testosterone; severe sleep apnea was an independent predictor, and CPAP raised T after 3 months in 14 men
The Role of Obstructive Sleep Apnea and CPAP Therapy in the Functional Hypogonadism of Male Patients With Severe Obesity hypogonadism obesity testosterone cross-sectional
- Genetic Cause Found in Only 1 in 4 Female IHH Cases2026-04-18
Only 4 of 17 sequenced female IHH patients (23.5%) had an identifiable pathogenic variant; the majority remain genetically undiagnosed
Genetic variants analysis of 17 female patients with idiopathic hypogonadotropic hypogonadism genetics genomics hypogonadism women's health infertility
- Adding Testosterone Cuts Drug Dose, Not Sperm Rates2026-04-01
Triple therapy (hCG + FSH + testosterone) cut the median hCG dose needed by 17% but didn't significantly improve spermatogenesis rates in 45 CHH men
Comparing the response of triple therapy and conventional treatment in male congenital hypogonadotropic hypogonadism: a randomized controlled trial hypogonadism spermatogenesis testosterone infertility
- Infant Hormone Window Predicts Adult Fertility2026-03-26
Hormone levels at 1–3 months of life predict adult reproductive capacity and can flag hypogonadism before symptoms appear
Clinical Implications of Minipuberty pediatric urology hypogonadism biomarkers infertility
- FSH, Not Just Testosterone, May Drive Muscle Loss2026-03-17
Men with Klinefelter syndrome had significantly less lean mass than Kallmann men (ALMI 7.28 vs 8.37 kg/m²), implicating FSH
Body Composition by DXA in Patients with Klinefelter and Kallmann Syndrome: The Kama Study hypogonadism testosterone therapy genetics biomarkers
- Most CHH Cases Have No Single Gene to Blame2026-03-17
In 88 Japanese CHH patients, only 39% had a confirmed pathogenic variant; the rest showed hallmarks of multi-gene inheritance
Comprehensive Molecular Studies in 88 Japanese Patients With Congenital Hypogonadotropic Hypogonadism genetics hypogonadism male infertility genomics
- Fixing a Fertility Problem Also Lifts Testosterone2026-03-13
Varicocele repair raised testosterone by 80-100 ng/dL on average, per a review of existing studies
Varicocele and low testosterone varicocele hypogonadism testosterone male infertility narrative review
- Testosterone Rescues Muscle Loss on Tirzepatide2026-03-09
Adding TRT to tirzepatide in 5 non-responding men preserved lean mass and doubled physical activity at 6 months
Effects of Testosterone Undecanoate as Add-On Therapy in Obese Hypogonadal Men That Are Late Responders to Tirzepatide: A Pilot Study hypogonadism obesity testosterone therapy erectile dysfunction metabolic syndrome
- Nobody Diagnosed Opioid Hypogonadism. Not Once.2026-02-24
57% of long-term opioid users had at least one hormone disorder; quitting dropped hypogonadism prevalence from 27% to 3%
Endocrinopathies and Their Recovery in a 20-Year Cohort Study of People With Heroin Dependence hypogonadism testosterone mental health longitudinal study opioids
- TRT: Lower Prostate Cancer, Higher BPH Risk2026-02-20
A Medicare study of 547K men found TRT linked to 16% lower prostate cancer hazard but 13% higher BPH risk
Association Between Testosterone Replacement Therapy and Prostatic Disorders in Elderly Hypogonadal Men hypogonadism prostate cancer BPH testosterone therapy
- Half of Klinefelter Men Have Fatty Liver2026-02-20
Nearly half of Klinefelter patients had fatty liver, driven by metabolic syndrome — not low testosterone
Metabolic Dysfunction-associated Steatotic Liver Disease in Klinefelter Syndrome: High Prevalence Uncovers an Unmet Need hypogonadism genetics cardiovascular disease metabolic syndrome
- Does Iron Boost Testosterone? Barely2026-02-20
Serum iron associates with testosterone in middle-aged men — but the causal story is murkier than the headline suggests
Serum Minerals and Male Age-related Hypogonadism: Multimodal Evidence Decoding Associations and Intervention Strategies iron metabolism biomarkers genetics hypogonadism
- The Infertility Fallback Guide Ferring Helped Write2026-02-19
Industry-sponsored "expert opinion" recommends gonadotropins + hCG luteal support when pulsatile GnRH therapy is unavailable — no original data included
Management of infertility in women with hypothalamic hypogonadotropic hypogonadism: an expert opinion. infertility women's health evidence quality hypogonadism
- Inflammation Scores Track With Lower Testosterone2026-02-18
In 7,576 men from NHANES, higher composite inflammation scores independently predicted lower total and free testosterone — but the age-stratified FT findings raise questions
Association Between Chronic Inflammation Status and Serum Testosterone and Free Testosterone in Adult Males cross-sectional testosterone hypogonadism biomarkers inflammation
- AAS and ED: Most Reviews Nearly Worthless2026-02-12
Six systematic reviews on AAS-induced ED: four rated critically low confidence, one low, one medium
Erectile Dysfunction and Related Variables Due to Anabolic Steroid Use: A Review of Reviews erectile dysfunction hypogonadism systematic review evidence quality anabolic steroids
- It's Not Age That Tanks Testosterone2026-02-06
Review of current evidence finds aging alone doesn't cause low T — obesity and diabetes do, and recent RCTs report no added cardiovascular risk from treatment
Functional Testosterone Deficiency in Aging Men: Clinical Impact, Diagnostic Pathways, and Treatment Strategies hypogonadism testosterone therapy metabolic syndrome narrative review
- One in Four "Causative" IHH Variants: Actually Benign2026-01-30
When re-scored by ACMG standards, 26% of reported "causative" IHH/Kallmann variants were benign — and ClinVar confirmed only 18% as pathogenic
Overestimation of Pathogenic Variants in Idiopathic Hypogonadotropic Hypogonadism and Kallmann Syndrome genetics genomics hypogonadism evidence quality
- Ginseng Compound Raises Testosterone — In Obese Mice2026-01-28
A ginseng-derived compound raised testicular testosterone in high-fat-diet mice by activating the cAMP/PKA/CREB pathway — no human data yet
Ginsenoside Rf Promotes Testosterone Synthesis Through the cAMP/PKA/CREB Signaling Pathway to Improve Obesity-Related Male Hypogonadism animal study hypogonadism testosterone obesity traditional chinese medicine
- Three Specialties Finally Agree on Low T2026
Brazil's three major societies align on hypogonadism diagnosis and TRT — first multidisciplinary consensus for the country
Care of Patients with Male Hypogonadism: A Joint Position Statement from SBEM, SBU, and ABEMSS hypogonadism testosterone therapy metabolic syndrome obesity
- Surgery for Micropenis: Evidence Too Thin to Recommend2026
Narrative review of 36 studies: early testosterone therapy beats surgery for micropenis, but RCT data barely exists
Micropenis in Children and Adolescents: A Narrative Review hypogonadism testosterone therapy evidence quality pediatric urology
- Testosterone Review Skips the Hard Evidence2025-12-24
A non-systematic review says testosterone therapy is safe and effective, but cites no funding or conflicts
Testosterone Therapy in Adult Males with Hypogonadism testosterone therapy hypogonadism narrative review evidence quality
- GLP-1 Drugs and Sperm: Mostly Rat Data So Far2025-09-26
Ozempic-class drugs may help sperm in obese men, but most of the evidence so far is from rats
Impact of GLP-1 Receptor Agonists on Male Fertility: Emerging Evidence and Future Directions obesity diabetes hypogonadism spermatogenesis animal study narrative review
- A Puberty Gene Discovery Now Treats Hot Flashes2025-09-17
Over 60 genes are now linked to a puberty-blocking disorder, but genetics still explains only half of cases
Genetics of Idiopathic Hypogonadotropic Hypogonadism genetics hypogonadism male infertility narrative review
- Nine Societies, No Consensus on Low Testosterone2025-07-19
Nine major specialist societies disagree on the name, diagnostic cutoffs, and monitoring protocols for male hypogonadism
Variations in Diagnostic Criteria for Male Hypogonadism: Is There a Need for Standardizing Specialist Society Guidelines? hypogonadism testosterone narrative review evidence quality
- Mom's Obesity Linked to Son's Low Testosterone2025-05-14
Men whose mothers were obese during pregnancy had 5.9× higher odds of low testosterone — but only 12 of 418 men had that history
Low testosterone in primary infertile men is associated with a history of maternal obesity during pregnancy: Findings from a cross-sectional study. male infertility testosterone obesity pregnancy hypogonadism
- hCG for Azoospermia: Settled Science for One Type, Guesswork for the Rest2025-02-04
A narrative review argues hCG may treat more azoospermia subtypes than currently accepted, introducing the unvalidated "APHRODITE criteria" to guide patient selection.
Human Chorionic Gonadotropin-Based Clinical Treatments for Infertile Men with Non-Obstructive Azoospermia male infertility spermatogenesis hypogonadism narrative review
- One Hormone Test to Find Where Hypogonadism Starts2025-01-20
A narrative review proposes kisspeptin stimulation as the first viable way to tell whether low testosterone originates in the hypothalamus or pituitary.
Kisspeptin as a test of hypothalamic dysfunction in pubertal and reproductive disorders. hypogonadism narrative review biomarkers infertility testosterone