How Hormone Therapy Affects Fertility
Hormone replacement therapy is one of the most important aspects of medical transition for many transgender people, but it has significant effects on reproductive function. Understanding these effects before starting HRT is essential for making informed decisions about your future family-building options. Both estrogen-based and testosterone-based therapies affect fertility differently, but neither should be relied upon as contraception.
Estrogen-Based HRT (Trans Women)
Feminizing hormone therapy with estrogen and anti-androgens suppresses testosterone production, which in turn suppresses spermatogenesis (sperm production). Within the first few months of treatment, sperm count and motility typically decline significantly. With prolonged use, the testes may atrophy (shrink), further reducing the potential for sperm production. The degree of suppression varies between individuals -- some trans women on estrogen for years still produce some sperm, while others have complete cessation within months. However, relying on this for contraception is not recommended, as breakthrough fertility can occur.
Testosterone-Based HRT (Trans Men)
Masculinizing hormone therapy with testosterone suppresses the hypothalamic-pituitary-gonadal axis, which stops or significantly reduces ovulation and menstruation. Most trans men on testosterone stop menstruating within 2-6 months. However, testosterone is not a reliable contraceptive -- ovulation can still occur unpredictably, and unplanned pregnancies have been documented in trans men on testosterone. With prolonged use, there may be changes to ovarian tissue, though the long-term impact on egg quality is still being studied. Importantly, many trans men who stop testosterone are able to resume ovulation and even carry pregnancies.
Is Fertility Loss from HRT Reversible?
The honest answer is: partially, in many cases, but not guaranteed. Medical providers cannot predict with certainty whether an individual will regain fertility after stopping hormone therapy. This uncertainty is precisely why fertility preservation before starting HRT is so strongly recommended.
Trans Women (Estrogen)
Some trans women who stop estrogen and anti-androgens do recover sperm production, sometimes within 3-6 months, but the recovery is variable:
- Duration matters: Shorter duration of HRT is associated with higher likelihood of recovery. Those on estrogen for under 2 years have the best chances.
- Testicular atrophy: Prolonged estrogen use causes testicular shrinkage and may permanently reduce the Sertoli and Leydig cells responsible for sperm production.
- No guarantee: Studies show that while many trans women recover some spermatogenesis, the sperm quantity and quality may be reduced compared to pre-HRT levels.
- Orchiectomy: If the testes have been surgically removed, sperm production is permanently impossible. Banking must occur before this procedure.
Trans Men (Testosterone)
Fertility recovery after stopping testosterone is generally more favorable than after estrogen, but still not guaranteed:
- Ovulation often resumes: Most trans men resume menstruation and ovulation within 3-6 months of stopping testosterone, even after years of use.
- Successful pregnancies documented: Multiple studies have shown that trans men can have healthy pregnancies after stopping testosterone.
- Egg quality concerns: Long-term effects of testosterone on egg quality are not fully understood. Some studies suggest no significant impact; others suggest possible changes to ovarian tissue.
- Hysterectomy/oophorectomy: If the uterus or ovaries have been surgically removed, pregnancy or egg retrieval (respectively) is no longer possible.
Medical organizations including WPATH and the Endocrine Society recommend treating HRT-related fertility effects as potentially permanent, even though partial recovery is common. The WPATH Standards of Care (Version 8) explicitly recommend that all transgender individuals of reproductive age be counseled about fertility preservation options before starting hormone therapy. The safest approach: preserve before you start, so the decision is never made for you.
Fertility Preservation Options
Several well-established methods exist for preserving fertility before or early in hormone therapy. The right choice depends on your anatomy, your goals, your budget, and whether you have a partner whose gametes you would like to combine with yours.
Sperm Banking (Cryopreservation)
The simplest and most affordable option for people who produce sperm. A sample is collected (via masturbation at a clinic or at home with a kit), analyzed for count and motility, then frozen in liquid nitrogen for long-term storage.
- Who it's for: Trans women and non-binary people assigned male at birth (AMAB) who have not yet started estrogen or who are very early in treatment
- Process: Typically 1-3 collection sessions over 1-2 weeks. Multiple samples are recommended to ensure adequate supply.
- Success rates: Frozen sperm can be used for intrauterine insemination (IUI) or in vitro fertilization (IVF). IUI success rates are 10-20% per cycle; IVF success rates are 40-50% per cycle.
- Storage duration: Indefinite. Sperm frozen in liquid nitrogen does not degrade over time.
Egg Freezing (Oocyte Cryopreservation)
A more involved process that requires hormonal stimulation of the ovaries and a minor surgical procedure to retrieve mature eggs, which are then vitrified (flash-frozen) for storage.
- Who it's for: Trans men and non-binary people assigned female at birth (AFAB) who have not yet started testosterone or are early in treatment
- Process: 10-14 days of injectable ovarian stimulation medications, monitoring via blood tests and ultrasound, then outpatient egg retrieval under sedation. Total process takes about 2 weeks.
- Important note for trans men: The stimulation process requires taking estrogen-producing medications, which can temporarily increase estrogen levels and potentially cause dysphoria. Discuss this with your provider to prepare emotionally.
- Average yield: 10-20 eggs per cycle for people under 35. Not all eggs will survive thawing and fertilization -- typically 60-80% survive.
- Storage duration: Indefinite with proper cryopreservation.
Embryo Freezing
Similar to egg freezing, but retrieved eggs are fertilized with sperm (from a partner or donor) before freezing. Embryos have higher survival rates upon thawing than unfertilized eggs.
- Who it's for: People who already have a partner or selected donor and want the highest future success rates per preserved unit
- Process: Same ovarian stimulation and retrieval as egg freezing, followed by IVF to create embryos, which are then frozen
- Advantage: Frozen embryos have higher survival rates upon thawing (~95%) compared to frozen eggs (~80%), and each embryo has a 40-60% chance of resulting in a live birth when transferred
- Consideration: Requires commitment to a specific sperm source at the time of freezing. If relationships change, the embryos involve shared biological material with legal implications
- Storage duration: Indefinite. Healthy babies have been born from embryos frozen for over 25 years.
Ovarian or Testicular Tissue Freezing
An experimental option that may be relevant for prepubescent transgender youth who cannot yet produce mature gametes.
- Who it's for: Primarily prepubescent or early-pubescent young people starting puberty blockers before they have produced mature eggs or sperm
- Process: A small piece of ovarian or testicular tissue is surgically removed and cryopreserved. The hope is that future technology will allow maturation of gametes from this tissue.
- Current status: Ovarian tissue cryopreservation is no longer considered experimental for cisgender women undergoing cancer treatment, and live births have resulted. Testicular tissue cryopreservation remains experimental with no human births yet achieved.
- Important caveat: This is a developing field. Families should understand that using stored tissue for reproduction is not yet routine and may not be available by the time it is needed.
Fertility Preservation Costs
Cost is one of the biggest barriers to fertility preservation for transgender people. Here is a transparent breakdown of what to expect for each option, including both upfront and ongoing storage costs.
| Method | Upfront Cost | Annual Storage | What's Included | Notes |
|---|---|---|---|---|
| Sperm Banking | $300 - $1,000 | $200 - $500/year | Collection, analysis, processing, initial freezing | Most affordable option. Home collection kits available from some providers ($150-$300 per kit). |
| Egg Freezing | $5,000 - $15,000 | $500 - $1,000/year | Medications, monitoring, retrieval procedure, initial freezing | Medications alone cost $3,000-$6,000. May need 1-2 cycles depending on egg yield. |
| Embryo Freezing | $10,000 - $15,000 | $500 - $1,000/year | Everything in egg freezing plus IVF fertilization and embryo culture | Higher per-unit success rate but requires choosing a sperm source upfront. |
| Tissue Freezing | $5,000 - $12,000 | $300 - $800/year | Surgical biopsy, tissue processing, cryopreservation | Experimental. Future use not guaranteed with current technology. |
Ways to Reduce Costs
- Insurance coverage: Check your plan -- an increasing number of states mandate fertility preservation coverage (see the insurance section below)
- Payment plans: Most fertility clinics offer 6-12 month interest-free payment plans
- Grants and assistance: Organizations like Family Equality, Livestrong Fertility, and Baby Quest Foundation offer financial assistance for fertility preservation
- University clinics: Teaching hospitals and university fertility programs often offer significantly reduced rates
- Shared banking programs: Some sperm banks offer discounted rates for transgender patients
- Multi-cycle discounts: If multiple egg freezing cycles are needed, many clinics offer package pricing
When to Preserve: Timing Is Everything
The ideal time to preserve fertility is before starting hormone therapy. However, if you have already begun HRT, options may still be available. Here is guidance on timing for different situations.
Before Starting HRT (Best Scenario)
- Sperm banking: Can be completed in 1-2 weeks. Schedule collection appointments before your first dose of estrogen.
- Egg freezing: Requires approximately 2 weeks from the start of stimulation medications to retrieval. Plan to complete at least one cycle before starting testosterone.
- Don't delay HRT unnecessarily: Fertility preservation is important, but your mental health matters too. Most preservation procedures can be completed within 2-4 weeks, so the delay to starting HRT is minimal.
- Discuss with your HRT provider: Many gender-affirming care providers can coordinate with fertility specialists to create a timeline that serves both your transition and fertility goals.
Already on HRT (Still Possible)
- Trans women on estrogen: Temporarily stopping estrogen for 3-6 months may allow sperm production to recover. A semen analysis can determine if viable sperm are being produced. Success depends on duration of prior HRT and individual factors.
- Trans men on testosterone: Stopping testosterone typically leads to resumption of ovulation within 3-6 months. Egg retrieval can then be attempted. Multiple studies confirm this approach works, though it may be emotionally difficult due to temporary return of menstruation and estrogen effects.
- Important: Stopping HRT to preserve fertility should be done under medical supervision. Abrupt cessation can cause mood changes and other symptoms. Your provider can help you taper safely.
- The sooner the better: If you are considering preservation and are already on HRT, acting sooner gives better results than waiting longer.
Insurance Coverage for Fertility Preservation
Insurance coverage for transgender fertility preservation is evolving rapidly. While not universally covered, more states and employers are including these benefits. Here is what you need to know about navigating insurance for fertility preservation.
States with Fertility Preservation Mandates
As of 2026, the following states have laws that may require insurance coverage for fertility preservation when a medical treatment (including HRT) threatens fertility:
- California -- SB 600 requires coverage for fertility preservation when a treatment may cause iatrogenic infertility
- Connecticut -- Comprehensive fertility preservation mandate
- Colorado -- Includes gender-affirming care under fertility preservation requirements
- Delaware -- Fertility preservation coverage mandate
- Illinois -- Comprehensive fertility coverage including preservation
- New Jersey -- Fertility preservation mandate with broad definitions
- New York -- Comprehensive fertility coverage requirements
- Rhode Island -- Fertility preservation coverage for iatrogenic infertility
How to Navigate Your Coverage
- Call your insurer directly: Ask specifically about "fertility preservation prior to gender-affirming hormone therapy" and reference your state's mandate if applicable
- Get a referral from your HRT provider: A letter stating that your planned treatment may cause infertility can support your insurance claim
- Ask about specific CPT codes: Relevant codes include 89258 (sperm cryopreservation), 89337 (embryo cryopreservation), and 58970 (egg retrieval)
- Appeal denials: If initially denied, appeal with documentation from your provider. Many denials are overturned on appeal, especially in states with coverage mandates
- Employer benefits: Many large employers -- particularly in tech, finance, and healthcare -- now include fertility preservation in their benefits packages, sometimes regardless of state mandates
- If uninsured: Fertility clinics often offer self-pay discounts of 10-30%, and payment plans are widely available
Pregnancy and Testosterone: What Trans Men Need to Know
Pregnancy is possible for trans men, both intentionally and unintentionally. Whether you are considering pregnancy or want to prevent it, understanding the intersection of testosterone and reproductive function is essential.
Testosterone Is Not Contraception
This is one of the most important points in transgender reproductive health. Even though testosterone suppresses ovulation in most people, it does not do so reliably enough to serve as birth control. Key facts:
- Ovulation can occur unpredictably even with regular testosterone injections and absence of menstruation
- Multiple documented cases of unplanned pregnancy in trans men on testosterone
- If you have a uterus and are sexually active with a partner who produces sperm, use contraception (condoms, IUD, or other methods) if you do not want to become pregnant
- An IUD is often a good option because it does not require remembering a daily pill and can be used alongside testosterone
Planning a Pregnancy as a Trans Man
An increasing number of trans men are choosing to carry pregnancies. If this is something you are considering:
- Stop testosterone before conceiving: Testosterone is a teratogen (it can cause birth defects) and must be stopped before pregnancy. Most providers recommend stopping at least 3 months before attempting conception.
- Expect ovulation to return: Most trans men resume menstruation and ovulation within 3-6 months of stopping testosterone
- Find an affirming provider: Seek an OB-GYN or midwife experienced with transgender patients. Organizations like FOLX Health maintain provider directories.
- Prepare emotionally: Pregnancy can intensify gender dysphoria due to the physical changes involved. Having a strong support system and a therapist experienced with gender issues can be invaluable.
- Resuming testosterone: You can resume testosterone after delivery. If breastfeeding/chestfeeding, discuss timing with your provider, as testosterone may pass into breast milk.
Research published in Obstetrics & Gynecology and other journals has documented healthy pregnancies and deliveries in trans men who previously used testosterone. While the experience is unique and can be emotionally complex, it is a medically viable path to parenthood. Support communities like Seahorse Dads and FOLX Health provide resources and peer connections for trans men navigating pregnancy.
Frequently Asked Questions About Fertility Preservation
Not necessarily, but it is not guaranteed to be reversible either. Estrogen suppresses sperm production and testosterone suppresses ovulation, and in many cases fertility partially recovers after stopping hormones. However, the degree and timeline of recovery are unpredictable and depend on individual factors, duration of HRT, and age. The longer you are on HRT, the less certain recovery becomes. This is why the WPATH Standards of Care and the Endocrine Society both recommend treating HRT-related fertility effects as potentially permanent and preserving fertility before starting treatment if biological children are a possibility you want to keep open.
Initial sperm banking typically costs $300 to $1,000 for collection, analysis, processing, and initial freezing. Annual storage fees range from $200 to $500 per year. Home collection kits are available from some providers for $150-$300. Multiple samples are recommended (2-3 collections), so total upfront costs may be $500-$2,000. This is the most affordable fertility preservation option available. Some clinics offer discounted packages for transgender patients, and financial assistance may be available through organizations like Family Equality.
Egg freezing typically costs $5,000 to $15,000 per cycle, including ovarian stimulation medications ($3,000-$6,000), monitoring blood tests and ultrasounds, the egg retrieval procedure, and initial cryopreservation. Annual storage costs are $500 to $1,000. Most people need only one cycle, but some may need two depending on the number of eggs retrieved. The total first-year cost including medications and one cycle averages $8,000-$12,000. This is significantly more expensive than sperm banking because the process requires injectable medications and a minor surgical procedure.
Before starting HRT is ideal. Gametes are at their highest quality and quantity before any hormone therapy begins. Sperm should be banked before starting estrogen, and eggs should be frozen before starting testosterone. The delay to starting HRT is minimal -- sperm banking takes 1-2 weeks, and egg freezing takes about 2 weeks. If you have already started HRT, it may still be possible to preserve fertility by temporarily stopping hormones, but results are less predictable. Discuss your specific situation with both your HRT provider and a reproductive endocrinologist.
Yes. Testosterone suppresses ovulation but not reliably enough to serve as contraception. Unplanned pregnancies have occurred in trans men on testosterone, including those who had not had a menstrual period in months. If you have a uterus and are sexually active with someone who produces sperm, use contraception (condoms, IUD, or other methods) if you do not want to become pregnant. If you do wish to become pregnant, you must stop testosterone first, as it can cause serious harm to a developing fetus. Consult your healthcare provider about safe timing.
Coverage varies significantly by state and insurer. As of 2026, several states including California, Connecticut, Colorado, Illinois, New Jersey, New York, Delaware, and Rhode Island have laws that may require coverage for fertility preservation when a medical treatment threatens fertility, which can include gender-affirming HRT. Many large employers also include fertility benefits in their plans. Contact your insurance provider directly and ask about coverage for "fertility preservation prior to gender-affirming hormone therapy." If denied, appeal with documentation from your provider -- many initial denials are overturned.
Frozen gametes and embryos can be stored indefinitely without degradation in quality. Cryopreservation in liquid nitrogen at -196 degrees Celsius halts all biological activity completely. Healthy babies have been born from sperm frozen for over 20 years and embryos frozen for more than 25 years. There is no known biological time limit on storage. The primary consideration is the ongoing annual storage cost ($200-$1,000 per year depending on the type of preservation), which adds up over decades. Some facilities offer prepaid multi-year storage plans at a discount.
It may still be possible, depending on how long you have been on HRT and your individual response. For trans women on estrogen, temporarily stopping HRT for 3-6 months may allow sperm production to recover enough for banking -- a semen analysis will determine if viable sperm are present. For trans men on testosterone, ovarian function often resumes within 3-6 months of stopping, allowing egg retrieval. A reproductive endocrinologist experienced with transgender patients can evaluate your specific situation. The sooner you act, the better your chances. Even if full fertility does not recover, other family-building options like donor gametes, adoption, and surrogacy remain available.
References
- Coleman E, Radix AE, Bouman WP, et al. Standards of Care for the Health of Transgender and Gender Diverse People, Version 8. Int J Transgend Health. 2022;23(Suppl 1):S1-S259. PubMed
- Hembree WC, Cohen-Kettenis PT, Gooren L, et al. Endocrine Treatment of Gender-Dysphoric/Gender-Incongruent Persons: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2017;102(11):3869-3903. PubMed
- Light AD, Obedin-Maliver J, Sevelius JM, Kerns JL. Transgender Men Who Experienced Pregnancy After Female-to-Male Gender Transitioning. Obstet Gynecol. 2014;124(6):1120-1127. PubMed
- Adeleye AJ, Reid G, Kao CN, et al. Semen Parameters Among Transgender Women With a History of Hormonal Treatment. Urology. 2019;124:136-141. PubMed
- Leung A, Sakkas D, Pang S, Thornton K, Resetkova N. Assisted Reproductive Technology Outcomes in Female-to-Male Transgender Patients Compared with Cisgender Patients: A New Frontier in Reproductive Medicine. Fertil Steril. 2019;112(5):858-865. PubMed
- De Roo C, Tilleman K, T'Sjoen G, De Sutter P. Fertility Options in Transgender People. Int Rev Psychiatry. 2016;28(1):112-119. PubMed
Medical Disclaimer: This content is for informational purposes only and does not constitute medical advice, diagnosis, or treatment. Fertility preservation decisions are highly personal and should be made in consultation with qualified healthcare providers, including a reproductive endocrinologist experienced with transgender patients. Individual outcomes vary and cannot be guaranteed. Never disregard professional medical advice or delay seeking it because of something you have read on this website.