Male Fertility

The Male Method - External (Male) Condoms: Efficacy, Materials, and the Innovation Lag

The only male contraceptive that's actually for sale - and the only one that stops STIs too.

Barrier Contraceptive (FDA-cleared device)FDA-cleared medical device; the only widely available reversible male method and the only one that also prevents STIs

Infectious and Non-Infectious Inflammation of the Epididymis and Testis

The great mimic of torsion - and an underrated cause of duct obstruction.

Scrotal Inflammatory ConditionNot applicable (antibiotic-managed condition)

Assisted Reproductive Technologies from the male side

Three escalating procedures, one frequently-overused workhorse.

Assisted Reproduction ProceduresEstablished clinical procedures (regulated as medical practice; ICSI introduced 1992)

WHO 2021 Sixth Edition Reference Values

The cornerstone of the male fertility workup, and the most misunderstood number in men's health.

Core Diagnostic TestLaboratory test; not an FDA-regulated drug

Cryostorage of Semen and Testicular Sperm

An insurance policy for future fatherhood that decades of data say holds up.

Fertility PreservationTissue banking regulated under FDA tissue rules; not a drug

Testicular Germ Cell Tumors - Seminoma and Non-Seminoma

The young man's cancer with a remarkable cure rate - and a fertility aftermath.

Genitourinary Malignancy (Young Men)Not applicable (managed per AUA/EAU oncology guidelines)

Spermatic Cord Torsion / Acute Scrotum Emergency

The clock-race of urology: six hours to save a testicle.

Urologic Surgical EmergencyNot applicable (surgical emergency)

No-Scalpel Vasectomy, Post-Vasectomy Semen Analysis, Regret & the Health-Myth Record

The most reliable form of contraception a man can buy - and the most maligned by myth.

Outpatient Male Sterilization ProcedureSurgical procedure (not FDA-regulated as a device/drug); endorsed by AUA Vasectomy Guideline (2012, amended 2015)

Failure of Ejaculation and Orgasm - Neurogenic, Psychogenic, and Post-Surgical

When semen never arrives - and how reproduction proceeds anyway.

Ejaculatory DysfunctionNot applicable (procedure/device-based retrieval)

IUI, IVF, ICSI, and Surgical Sperm Retrieval (TESE / Micro-TESE)

From a single motile sperm, a biological child, how ICSI changed severe male infertility.

Assisted Reproductive TechnologyNot applicable (clinical procedures)

Obstructive vs Non-Obstructive Absence of Sperm

No sperm in the ejaculate does not always mean no sperm in the testis.

Severe Male Factor DiagnosisDiagnostic category; treatments range from microsurgery to assisted reproduction

Obstructive vs non-obstructive azoospermia; microdissection testicular sperm extraction

No sperm in the ejaculate is not the end of the line - it's the start of a workup.

Diagnostic Workup & MicrosurgerySurgical procedure (regulated as medical practice)

The industry, genetic screening, and the end of anonymity

A lightly-regulated marketplace meeting the era of consumer DNA tests.

Third-Party Reproduction IndustryDonor tissue regulated by FDA (donor eligibility/screening, 21 CFR 1271); donor selection practices largely self-regulated

Klinefelter Syndrome, Y-Chromosome Microdeletions, and CFTR Mutations

Why severe oligospermia or azoospermia warrants a karyotype and gene panel before anything else.

Genetic DiagnosisNot applicable (genetic conditions)

Y-Chromosome Microdeletions (AZFa/b/c), CFTR/CBAVD, Karyotype Abnormalities, and When to Test

When the sperm count is near zero, the answer is often written in the DNA.

Genetic Workup of the Severely Infertile MaleDiagnostic genetic testing (not a therapy); recommended by AUA/ASRM and EAA/EMQN guidelines for severe oligozoospermia and azoospermia

hCG + FSH (and Pulsatile GnRH) - the Genuinely Successful Case in Male Fertility Pharmacology

The one place hormone therapy reliably builds sperm from scratch - and it is on-label.

Endocrine Fertility Restoration (secondary hypogonadism)hCG and menotropins/recombinant FSH are FDA-approved for inducing spermatogenesis in hypogonadotropic hypogonadism

Interpreting FSH, LH, Testosterone, and Prolactin

The four hormones that localize the problem to the brain, the testis, or in between.

Endocrine WorkupNot applicable (diagnostic evaluation)

Benign Scrotal Fluid Collections and Sperm-Filled Cysts

The common, benign lumps - the trick is knowing when to leave them alone.

Benign Scrotal Cystic LesionNot applicable (benign, often observed)

The Male-Factor Treatment Decision

Three escalating paths, chosen largely by how impaired the sperm is.

Assisted Reproduction PathwaysClinical ART procedures (not an FDA product category)

47,XXY and the Sperm-Retrieval Reality

The most common genetic cause of azoospermia, yet fatherhood is often still possible.

Genetic Cause of Non-Obstructive AzoospermiaGenetic condition (not an FDA category); managed surgically/medically

Microdissection Testicular Sperm Extraction (Schlegel technique)

Finding sperm where ejaculate has none, under the microscope, tubule by tubule.

Microsurgical Sperm Retrieval ProcedureSurgical procedure (not an FDA product category)

Post-Pubertal Mumps-Associated Orchitis and Testicular Atrophy

A childhood-era virus that can sterilize a grown man.

Viral OrchitisNot applicable (vaccine-preventable viral complication)

Orchitis, Epididymo-orchitis, and Genital Infection

A vaccine-preventable cause of testicular damage that still shows up where coverage lapses.

Infectious / Inflammatory CauseInfectious condition; prevention via MMR vaccine (FDA approved)

Banking before chemotherapy, radiation, or gender-affirming care

The most time-sensitive, highest-value reason to bank sperm.

Fertility PreservationGuideline-endorsed clinical practice (ASCO, ASRM, AUA)

Using Banked Sperm Years Later - Survival, Thaw Quality, ICSI Success and the Under-Referral Problem

Sperm banked before chemo can build a family a decade later - if the man was ever offered the chance.

Cancer-Survivor Fertility OutcomesClinical practice (no single FDA product); endorsed by ASCO and ASRM fertility-preservation guidelines

Advanced Paternal Age, De Novo Mutations, and Fertility Decline

There is no male menopause, but the sperm clock is not frozen either.

Reproductive Risk FactorRisk factor, not a treatable condition

Sympathomimetics, bladder-sperm retrieval, PVS and electroejaculation

When sperm are made but never make it out the usual way.

Ejaculatory Dysfunction ProceduresProcedures/devices used in clinical andrology (medical practice)

Backward Ejaculation into the Bladder

When the orgasm is dry, the sperm may simply have gone the wrong way.

Ejaculatory DysfunctionDiagnostic condition; pharmacologic treatments used off-label

Non-Obstructive Azoospermia Histology Patterns and MicroTESE Yields

The empty tubules behind non-obstructive azoospermia - and why the histology sets the odds.

Testicular Histopathology of NOANot applicable (histologic diagnosis)

Semen Analysis, Population Decline, and the Parameters of Male Fertility

The most-cited evidence that something is changing in male reproductive biology.

Foundational TopicNot applicable (diagnostic topic)

TESA vs PESA vs MESA vs Micro-TESE - Matching the Method to Obstructive or Non-Obstructive Azoospermia

Four ways to get sperm out - and the right one depends on whether the plumbing or the factory failed.

Surgical Sperm-Retrieval Method ComparisonSurgical techniques (not FDA-regulated products); standard in AUA/ASRM azoospermia management

Germ Cell Tumors and Pre-Treatment Sperm Banking

The most common cancer in young men, and a moment when fertility decisions cannot wait.

OncofertilityCancer condition; fertility preservation is a procedural standard, not a drug

Why Roughly Half of Cases Involve a Male Factor - and Why the Man Is Still Under-Evaluated

A male factor is involved about half the time - yet the workup, and the blame, default to the woman.

Epidemiology & Care-Gap AnalysisEpidemiological/health-systems topic (no FDA product); reflected in WHO, ASRM, and AUA male-infertility guidance

Cryobanks, Donor Sperm, and Fertility Preservation

A regulated global market in frozen gametes, for preservation and for donor conception.

Cryopreservation Service / Donor Gamete MarketDonor tissue regulated under 21 CFR Part 1271 (HCT/P); banks FDA-registered

How Testosterone Therapy Suppresses Sperm, and How hCG, Enclomiphene, and Clomiphene Manage It

The single most important thing a man on TRT should understand about his fertility.

Hormonal Conflict / Management StrategyTestosterone FDA approved for hypogonadism, NOT for fertility; can suppress it

The Clinical and Genetic Origins of Sex-Chromosome Medicine

Two syndromes described before the chromosomes behind them were even known.

Medical History / GeneticsNot Applicable (diagnostic discoveries)

Vasectomy, Vasovasostomy, and Vasoepididymostomy

Highly effective contraception that is reversible more often than men assume, but not guaranteed.

Surgical Contraception & ReconstructionSurgical procedure; not FDA-regulated as a device or drug

Vasovasostomy/Vasoepididymostomy versus TESE/PESA-plus-ICSI - Success by Obstructive Interval and the Cost Tradeoff

Two routes to a baby after a vasectomy - and the math turns on how long ago you had it.

Fertility-Restoration Decision (microsurgery vs ART)Surgical/ART pathways (not a single FDA-regulated product); informed by Vasovasostomy Study Group data and AUA/ASRM guidance

Immunologic Male Infertility

When the immune system treats sperm as foreign, after the blood-testis barrier is breached.

Immunologic CauseDiagnostic finding; managed by assisted reproduction, no specific FDA drug

Legacy, Dadi, YO, ExSeed, SpermCheck, Fellow

Direct-to-consumer semen analysis, and a freezing-as-insurance upsell.

Consumer Diagnostic / Mail-In ServiceSome devices FDA 510(k)-cleared (YO, SpermCheck); mail-in lab services use CLIA labs

Chronic Scrotal Content Pain Including Post-Vasectomy Pain Syndrome

One of urology's most frustrating conditions - and vasectomy's underdiscussed risk.

Chronic Genital Pain SyndromeNot applicable (multimodal pain management)

Off-label SERMs and gonadotropins to preserve or restore spermatogenesis

The fertility-sparing alternative TRT clinics rarely lead with.

Off-Label Hormonal TherapyClomiphene FDA-approved for female anovulation (off-label in men); hCG approved for hypogonadotropic hypogonadism; FSH products approved in specific contexts

Phthalates, bisphenols, heat, obesity, cannabis, anabolic steroids

The modifiable side of the fertility ledger - some proven, some hyped.

Environmental & Lifestyle Risk FactorsNot a treatment; some chemicals subject to environmental/consumer regulation

Heat, Endocrine Disruptors, and the Evidence Behind Device-Radiation Claims

Separating the well-supported (heat, phthalates) from the overstated (Wi-Fi sperm panic).

Environmental ExposureNot applicable (exposure topic)

CoQ10, L-Carnitine, Zinc, Folate, Vitamin C, and Vitamin D for Male Fertility

An antioxidant rationale with real biology, and honestly modest, mixed clinical evidence.

Antioxidant / Micronutrient SupplementsNot FDA approved for fertility (dietary supplements)

Testosterone (+/- Progestin) Suppression of FSH/LH and the Azoospermia Threshold

Use a hormone men already make to switch off the factory that makes sperm.

Hypothalamic-Pituitary-Gonadal Axis SuppressionInvestigational; no hormonal male contraceptive is FDA-approved (2026)

Clomiphene / Enclomiphene, hCG, hMG/FSH, Aromatase Inhibitors

Stimulating the body's own sperm production, instead of suppressing it like TRT.

Endocrine / Fertility-Stimulating TherapyLargely off-label for male fertility; clomiphene FDA-approved for female infertility only

Adult Sexual and Reproductive Sequelae of Congenital Urethral Anomalies

Fixed in childhood, but the sexual and fertility story continues into adulthood.

Congenital Urethral Anomaly (Adult Outcomes)Not applicable (surgically reconstructed in childhood)

Imprinting Disorders, Birth-Defect Registries, and the Honest State of the Long-Term-Health Debate

Millions of healthy ICSI babies - and a small, genuinely unresolved signal worth naming honestly.

Offspring-Outcomes Evidence Review (ART/ICSI)ICSI is a clinical ART technique (not FDA drug/device approval); outcomes tracked by registries and large cohort studies

Inguinal Hernia Effects on the Scrotum, Fertility, and Post-Repair Sequelae

The most common groin operation - and its quiet questions about the vas and the vas's neighbor, chronic pain.

Groin/Scrotal Structural ConditionNot applicable (surgical condition)

The ~74-Day Spermatogenesis Cycle - What Actually Moves Parameters, and Over What Period

Sperm you ejaculate today were committed about two and a half months ago - so be patient and be honest about what works.

Evidence-Graded Lifestyle TimelineLifestyle factors (no FDA product); reflected in ASRM/AUA lifestyle guidance

Exercise, Weight Management, Smoking Cessation, and Alcohol

The cheapest, lowest-risk levers, strongest for smoking cessation and weight.

Lifestyle ModificationNot applicable (behavioral interventions)

Why a Reversible Male Method Has Eluded Medicine for 60 Years

Sixty years after the female pill, men still have two real choices: a barrier or a knife.

Field Overview / Reproductive PharmacologyNo reversible pharmacological male method is FDA-approved as of 2026; the only male options are condoms, vasectomy, and withdrawal

Nestorone (Segesterone Acetate) + Testosterone Gel - the Current Lead Candidate

A gel you rub on your shoulders each morning - and the closest thing to a male pill we have.

Daily Transdermal Androgen-Progestin Contraceptive GelInvestigational; in Phase 2b efficacy trial (NICHD / Population Council). Not FDA-approved (2026)

Cannabis, Anabolic Steroids, Finasteride, Cycling, Obesity

Everyday substances and habits that quietly suppress sperm, some reversible.

Modifiable & Iatrogenic Risk FactorsNot applicable (consolidated risk-factor entry)

Sperm DNA Fragmentation, Oxidative Stress, and the Underexamined Paternal Side of Miscarriage

Recurrent miscarriage is treated as a woman's problem - but the sperm brought half the genome.

Paternal Factor in Recurrent MiscarriageDiagnostic/clinical concept (no FDA product); the male workup in RPL is increasingly discussed by ESHRE/ASRM but not yet standardized

Saunas, Hot Tubs, Laptops, and Occupational Heat

The testes hang outside the body for a reason, and heat is usually reversible.

Modifiable Lifestyle FactorLifestyle exposure; not FDA-regulated

Legacy, Fellow, Dadi, YO Home Sperm Test, clinical cryobanks

Decades-old clinical science wrapped in a subscription.

Fertility Preservation & DTC ServiceClinical cryopreservation is established practice; at-home mail-in kits are consumer services (analyzers like YO are FDA-cleared devices)

The DNA Fragmentation Index and What It Adds Beyond Standard Semen Analysis

When the semen analysis looks normal but the couple still cannot conceive.

Advanced Sperm AssayNot applicable (laboratory assay)

SCSA, TUNEL, Comet, SCD (Halosperm)

A real biomarker, a contested clinical use, and a popular upsell.

Advanced Sperm DiagnosticLaboratory-developed tests; not standardized or FDA-cleared as a single assay

Incidental Intratesticular Calcifications and the Cancer-Risk Debate

The incidentaloma that launched a thousand unnecessary scans.

Incidental Ultrasound FindingNot applicable (imaging finding)

Pharma Reluctance, Funding Gaps, and the Advocacy Ecosystem (Male Contraceptive Initiative)

The science isn't the only thing that's stalled - so is the willingness to pay for it.

Market & Funding AnalysisNo approved product; analysis of why the market hasn't produced one

Cost, Insurance Gaps, and the IVF 'Add-On' Controversy

The biggest barrier to treating male infertility is often the invoice.

Health Economics & Market AnalysisEconomics/policy topic (no FDA product); add-on scrutiny led by the UK HFEA

Levine, Swan et al. meta-analyses (2017, 2022) and their critics

Is sperm count really falling worldwide - or is the data noisier than the headlines?

Epidemiological ControversyNot a treatment - a population-level scientific debate

Levine Meta-Analyses vs Their Critics

Are sperm counts really collapsing, or is it a measurement mirage?

Epidemiological ControversyNot applicable (scientific debate, not an intervention)

1990s-2016 Hormonal Efficacy Studies and the Behre 2016 Halted Trial

The studies that proved it works - and the one that proved how easily it gets shelved.

Clinical Trial History (Injectable Androgen-Progestin)Investigational; trials demonstrated efficacy but none led to an approved product

Varicocele and Its Repair: The Most Common Correctable Cause of Male Infertility

Present in ~15% of all men and ~40% of infertile men, and surgically correctable.

Anatomical Condition / Surgical RepairNot applicable (surgical/embolization procedure)

The MOXI trial null result and the supplement marketplace

A popular fix with a famous negative trial behind it.

Oral Fertility SupplementsDietary supplements (not FDA-approved to treat infertility)

Dimethandrolone Undecanoate & 11-beta-Methyl-19-nortestosterone Dodecylcarbonate - Oral 'Two-in-One' Pills

One molecule that acts as both the androgen and the progestin - the long-sought oral male pill.

Oral Dual-Action Androgen-Progestin (early-phase)Investigational; early-phase (Phase 1/early clinical) trials. Not FDA-approved (2026)

FertilAid, Coast Science Male Fertility, CoQ10 / L-carnitine Brands

A crowded antioxidant shelf, and a landmark trial that found no benefit.

Consumer Antioxidant / Micronutrient SupplementsNot FDA-approved; sold as dietary supplements

When No Cause Is Found, and What Gets Tried

A large fraction of male infertility has no identifiable cause, so treatment is a best guess.

Diagnosis of Exclusion / Off-Label TherapyNo FDA-approved drug for idiopathic male infertility; treatment is empiric/off-label

YCT-529 (Retinoic-Acid/RAR-alpha), EPPIN, and Sperm-Specific Targets

Skip the hormones: block sperm at a sperm-specific switch and leave testosterone alone.

Non-Hormonal Pipeline (early clinical / preclinical)Investigational/preclinical; YCT-529 in early human trials, others preclinical. None FDA-approved (2026)

Semen/seminal-fluid microbiota and male reproductive health

A real research frontier - and an early target for premature commercialization.

Emerging Research AreaResearch-stage; no validated diagnostic or therapeutic

Polymer Vas-Occlusion - India's RISUG and the US Vasalgel / Plan A Program

A reversible vasectomy: inject a gel into the vas, dissolve it later to restore flow.

Injectable Polymer Vas-Deferens Occlusion (procedure/device)Investigational; RISUG in late-stage trials in India, Vasalgel/Plan A in preclinical-to-early development. Not FDA-approved (2026)

Coitus Interruptus and Male-Side Fertility-Awareness - Honest Efficacy

Free, always available, and far less reliable than people assume.

Behavioral Method (no device/drug)Not a regulated method; behavioral practice