Medical
Diagnosis, treatment options, hormone therapy and surgical procedures — an overview of the medical side of transition.
Medical transition comprises hormone therapy, various surgical procedures and — for minors — possibly puberty blockers. Many of these interventions are far-reaching and partly or wholly irreversible. Loss of fertility, lasting changes to voice, body and sexual function, and lifelong dependence on medication are among the consequences that must be fully on the table before such a pathway is entered. Full information about this is not a "transphobic" obstacle, but a basic requirement for informed consent.
The Dutch care model is historically based on the so-called Dutch Protocol: puberty blockers from around 12 years of age, cross-sex hormones from around 16, surgery generally from 18. This model has been strongly contested internationally since the Cass Review (2024) and earlier revisions in Sweden, Finland, Norway and Denmark. The systematic literature reviews carried out for them conclude that the scientific basis for early medical intervention is "remarkably weak".
This section deals with every step in the medical pathway — from diagnosis and waiting times, via hormones and their side effects, to mastectomy, vaginoplasty, phalloplasty, facial surgery and voice training. Each part covers both the procedure and the risks and experiences of regret that are known from detransition research. Good medical care requires both sides of the story.
What a diagnosis means
'Gender dysphoria' is the clinical term for a persistent experience of incongruence between body and gender identity, with clinically significant distress. In the DSM-5 it has its own chapter; in the ICD-11 it has been moved to 'gender incongruence' under sexual health, no longer under mental disorders. That shift is controversial: critics argue that depathologisation simplifies access to care without the evidence picture necessarily having changed.
Comorbidity
In young people with gender dysphoria, comorbidity is substantial: autism spectrum disorders, depression, anxiety disorders, trauma, eating disorders. Whether the dysphoria is a primary experience, a consequence of underlying problems, or an interaction, differs per individual. Affirmative models treat the dysphoria first; cautious models treat comorbidity first.
Risks of untreated dysphoria
Untreated, clinically significant dysphoria can cause serious suffering: depression, social isolation, suicidality. Proponents of affirmative care point to those risks as an argument for rapid treatment. Critics point out that suicidality figures in comparative studies are often poorly substantiated and that the implicit blackmail ('treat quickly or the child dies') makes it impossible for parents to weigh things up.
Risks of medical transition
Hormone therapy has systemic effects: cardiovascular (increased risk with oestrogen), bone density (reduced with puberty blockers), fertility (often permanently reduced), psychological (mood effects). Surgical procedures each have their own complication profile — mastectomy is reversible in terms of silhouette but not in terms of function; vaginoplasty and phalloplasty have substantial long-term complication rates.
Irreversibility
Puberty blockers between eleven and sixteen affect bone density and possibly brain development — disputed quantitatively, acknowledged qualitatively. After a few years cross-sex hormones cause irreversible changes to voice and body. Surgery is by definition irreversible. The chain — blockers, hormones, surgery — is therefore step by step less and less reversible, while the care model since the original Dutch Protocol has assumed 'time to decide'.
Detransition
How many people detransition is unknown. The figures in official reports (1-2%) rest on clinics that rarely follow up their patients after they leave. Independent estimates (Littman, Vandenbussche) are substantially higher, with percentages between 6-25% depending on length of follow-up and definition. The absence of a Dutch detransition register is structural.
The Dutch care model under pressure
The Dutch Protocol has been weighed internationally and substantially curtailed in Scandinavia and the UK. The Dutch care chain still works largely according to the original model, with referral figures that have exploded and waiting times running to years. Whether the model can withstand the combination of a substantially changed patient population and an internationally changed assessment of the evidence is an open question.
What patient and family need to know
Full information includes: the nature of each procedure, the cumulative irreversibility, the limited evidence for long-term outcomes, the existence of detransition as a real outcome, and the lack of adequate care for those who want to go back. Only with that information can informed consent be meaningful. For minors this also touches on child protection: careful diagnostics and safeguards are essential before medical steps are taken.
All topics
Photo: F.RdeC, CC BY-SA 3.0, via Wikimedia CommonsDiagnosing Gender Dysphoria
Gender dysphoria is diagnosed based on the DSM-5 or ICD-11. Learn about the diagnostic process, the debate, and the role of comorbid symptoms.
Photo: F.RdeC, CC BY-SA 3.0, via Wikimedia CommonsDSM-5 and Gender Dysphoria
The DSM-5 describes gender dysphoria as distress caused by a discrepancy in gender identity. Read about the criteria, changing one’s name and the debate.
Photo: Yann Forget, CC BY-SA 3.0, via Wikimedia CommonsICD-11 and Gender Variance
The ICD-11 does not classify gender incongruence as a mental disorder. Learn about the new term, its implications for healthcare, and criticism of the reclassification.
Photo: Steven Lek, CC BY-SA 4.0, via Wikimedia CommonsThe Dutch Protocol
The Dutch Protocol is Amsterdam’s treatment model for gender dysphoria in young people. Learn about its content, spread, and scientific criticism.
Photo: Medgirl131, CC BY-SA 4.0, via Wikimedia CommonsHormone Therapy
Hormone therapy adjusts physical characteristics to align with gender identity. Learn about feminizing and masculinizing hormones, effects, risks, and access.
Photo: Vack Xu, CC0, via Wikimedia CommonsEstrogen in Gender Transition
Estrogen is the foundation of feminizing hormone therapy. Learn about methods of administration, effects, the risk of thrombosis, and the impact on fertility during transition.
Photo: Lupus in Saxonia, CC BY-SA 4.0, via Wikimedia CommonsTestosterone During Transition
Testosterone causes masculinization in trans men. Learn about methods of administration, permanent effects, its impact on fertility, and medical risks.
Drawing: Elsa Paulson, CC0, via Wikimedia CommonsPuberty Blockers
Puberty blockers delay puberty in young people with gender dysphoria. Learn how they work, explore the debate, and read about policy changes in the UK, Sweden, and Denmark.
Photo: Tahir Xəlfəquliyev via PexelsSide Effects of Hormone Therapy
Hormone therapy during transition can have side effects and risks. Learn about thrombosis, erythrocytosis, strain on the liver and cancer risks associated with hormone use.
Photo: Richard Balikian MD, CC BY 4.0, via Wikimedia CommonsSurgical Procedures
Overview of gender-affirming surgeries: mastectomy, vaginoplasty, phalloplasty and more. Information about access, risks and insurance coverage.
Photo: MESSALA CIULLA via PexelsMastectomy
Mastectomy (top surgery) removes breast tissue to create a flatter chest. Read about techniques, recovery, satisfaction, and reimbursement in gender-affirming care.
Photo: Anna Shvets via PexelsVaginoplasty
Vaginoplasty creates female genitalia for trans women. Learn about the techniques, postoperative care, complications and reimbursement in the Netherlands.
Photo: Stéf -b. via PexelsPhalloplasty
What is phalloplasty? Read about the techniques, the complications according to systematic reviews, the forearm donor site and the alternative, metoidioplasty.
Photo: U.S. Navy, public domain, via Wikimedia CommonsFacial Surgeries (FFS)
Facial feminization surgery (FFS) involves procedures that feminize the face. Learn about common procedures, risks, and coverage in the Netherlands.
Foto: Pavel Danilyuk via PexelsVoice Training
Voice training adapts the voice to the desired gender presentation. Learn about the approach for trans women and trans men, and voice surgery as an alternative.
Photo: YipshaiukOWL, CC BY-SA 4.0, via Wikimedia CommonsWaiting Times and Care Pathway
Gender-affirming care in the Netherlands takes several years. Learn about the steps involved, waiting times at gender clinics, and alternatives when the wait is too long.
Photo: Steve A Johnson via PexelsPsychological Support
Psychological support for gender dysphoria: the role of the psychologist, affirming and exploratory approaches, waiting times, and support after transition.
Photo: Dr.jayesh amin, CC BY-SA 3.0, via Wikimedia CommonsFertility and Transition
Medical treatments during transition can affect fertility. Learn about cryopreservation of reproductive cells and pregnancy in trans men.
Photo: The U.S. Food and Drug Administration, public domain, via Wikimedia CommonsBreast Augmentation During Transition
Breast augmentation (breast implants) in trans women: indications, timing after hormone therapy, techniques and risks.
Photo: Nick Smith photography, CC BY-SA 3.0, via Wikimedia CommonsBone Density During Transition
The impact of puberty blockers and cross-sex hormones on bone density in adolescents and adults, and recommendations for monitoring.
Photo: BlankEclair, CC BY-SA 4.0, via Wikimedia CommonsCyproterone Acetate in Gender-Affirming Care
Cyproterone acetate as an anti-androgen for trans women in the Netherlands: how it works, dosage, EMA warnings about meningioma, and alternatives.
Photo: Matylda Sęk (Cygaretka), CC BY-SA 3.0, via Wikimedia CommonsEgg Freezing During Transition
Egg freezing (oocyte cryopreservation) as a fertility option before testosterone therapy: procedure, timing, and key considerations.
Foto: Julia Khalimova via PexelsElectrolysis During Transition
Electrolysis as a method of permanent hair removal for trans women: technique, sessions, and comparison with laser.
Photo: Kristoferb, CC BY-SA 3.0, via Wikimedia CommonsFinasteride during transition
Finasteride as a 5-alpha-reductase inhibitor during transition: how it works, its limited role in feminizing therapy, and key considerations.
Photo: Mouli Sharma via PexelsWhat is gender dysphoria?
Gender dysphoria is the persistent distress about one's gender: its meaning, characteristics, diagnosis and where to turn for help.
Foto: Ivan S via PexelsGnRH Agonists in Gender Care
GnRH agonists (leuprorelin, triptorelin, goserelin) in gender-affirming care: how they work, use in adolescents and adults, and the debate since the Cass Review.
Foto: Timothy Huliselan via PexelsHair Transplantation During Transition
Hair transplantation and hairline correction during transition: techniques, indications for feminization, and masking residual beard hair.
Photo: U.S. Air Force, public domain, via Wikimedia CommonsCardiovascular Disease During Gender Transition
Cardiovascular risks associated with long-term cross-sex hormone therapy: findings from cohort studies and recommendations for risk management.
Photo: U.S. Marine Corps, public domain, via Wikimedia CommonsCancer Risk with Hormone Therapy
What does research say about cancer risk with long-term feminizing or masculinizing hormone therapy? Findings from Dutch cohort studies.
Photo: Amaregenmed, CC BY-SA 4.0, via Wikimedia CommonsLaser Hair Removal During Transition
Laser hair removal for the beard, neck and body in trans women: how it works, treatment sessions, limitations and its relationship to vaginoplasty.
Photo: Dan Bollinger, CC BY-SA 4.0, via Wikimedia CommonsMetoidioplasty
Metoidioplasty is a genital surgical procedure for trans men in which the testosterone-enlarged clitoris serves as a neophallus.
Photo: Dr.jayesh amin, CC BY-SA 3.0, via Wikimedia CommonsOrchiectomy as Part of Transition
Orchiectomy (removal of the testes) in trans women: indications, implications for hormone therapy, and relationship to vaginoplasty.
Photo: Tomino de WS, CC BY-SA 4.0, via Wikimedia CommonsProgesterone During Gender Transition
The role of progesterone in feminizing hormone therapy: breast development, sleep, risks, and the lack of robust evidence.
Photo: Matylda Sęk (Cygaretka), CC BY-SA 3.0, via Wikimedia CommonsSperm Cryopreservation During Transition
Sperm cryopreservation as a fertility option before feminizing hormone therapy or orchiectomy: procedure, timing, and reimbursement in the Netherlands.
Photo: Lupus in Saxonia, CC BY-SA 4.0, via Wikimedia CommonsSpironolactone in Gender-Affirming Care
Spironolactone as an anti-androgen for trans women: how it works, its use during gender transition, side effects, and its status in the Netherlands and internationally.
Photo: Vack Xu, CC0, via Wikimedia CommonsThrombosis Risk with Estrogen Therapy
Venous thromboembolism during feminizing hormone therapy: risk factors, differences between oral and transdermal estrogen, and recommendations.
AI-generatedWaiting five years for the first appointment: the reality of the Dutch gender care waiting list
At VU Amsterdam, an adult waits at least five years for an initial intake appointment for transgender care; at UMC Groningen, the wait is more than three years, and at Radboudumc, four years. An overview of what this waiting time means and why expanding capacity has failed to solve the problem so far.