← all papers · hypogonadism (26) Science journalism, not medical advice.
- 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
- 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
- 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
- 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