What Is the Relationship Between COVID-19 and Fertility?
The relationship between COVID-19 and fertility is an evolving area of research. COVID-19, caused by the SARS-CoV-2 virus, has the potential to impact various aspects of reproductive health, including ovulation, sperm quality, menstrual cycles, miscarriage risk, IVF outcomes, AMH levels, pregnancy outcomes, and conception. Both the illness itself and the COVID-19 vaccine have been scrutinized for their effects on fertility, but evidence thus far suggests that while COVID-19 infection can temporarily affect certain reproductive parameters, there is no robust evidence that it causes long-term infertility. Current data also show that COVID-19 vaccines do not impair fertility and are recommended for people trying to conceive.
Key Point: While COVID-19 infection may briefly disrupt menstrual cycles and sperm quality, most changes are temporary and resolve over time.
Key Takeaways
- COVID-19 infection can temporarily impact menstrual cycles, ovulation, and sperm quality.
- There is no compelling evidence that COVID-19 infection or COVID vaccines cause infertility in people with ovaries or sperm.
- Most changes to reproductive parameters after COVID-19 resolve within a few months.
- Pregnancy and miscarriage risks may be higher with infection during pregnancy, but not due to long-term fertility damage.
- IVF success rates do not appear to be negatively affected by past COVID-19 infection or vaccination.
- COVID-19 vaccination is considered safe and recommended for those trying to conceive.
- AMH (Anti-Müllerian Hormone) levels are not consistently altered by COVID-19 or vaccination.
- Long COVID may impact overall health, but evidence on specific fertility impacts is still emerging.
- It is important to discuss any concerns about COVID-19 and fertility with a healthcare provider.
- Continuing to follow preventive measures, including vaccination, can help protect reproductive health during the pandemic.
Table of Contents
- What Is the Relationship Between COVID-19 and Fertility?
- How Does COVID-19 Affect Reproductive Health?
- Does COVID-19 Infection Impact Ovulation or Menstruation?
- What Is the Impact of COVID-19 on Sperm Quality?
- COVID-19, AMH Levels, and Ovarian Reserve
- COVID-19 and IVF Outcomes
- How Does COVID-19 Affect Miscarriage Risk?
- COVID-19 Vaccines and Fertility
- Does Long COVID Affect Fertility?
- COVID-19 and Pregnancy Outcomes
- Quick Facts Table: COVID-19 and Fertility
- Myths vs. Facts About COVID-19 and Fertility
- Risk Factors and How to Reduce Them
- When Should You See a Fertility Specialist?
- Frequently Asked Questions About COVID-19 and Fertility
- References and Further Reading
- Disclaimer
How Does COVID-19 Affect Reproductive Health?
COVID-19 may impact reproductive health through direct effects of the viral infection and the broader systemic stress it can cause. The main areas of concern include the potential disruption of hormonal cycles, effects on ovarian and testicular tissues, inflammation affecting the reproductive system, and psychological impacts such as increased anxiety or stress that disrupt cycles or libido.
Mechanism of Impact
- Biological Impact: SARS-CoV-2 has been found to bind to ACE2 receptors, which are present in ovarian and testicular tissue. This raises concerns about potential direct effects on eggs, ovaries, sperm, and testes. However, the clinical significance of this is still being studied [1].
- Systemic Inflammation and Fever: Illness-related fever can disrupt both ovulation (in people with ovaries) and temporarily decrease sperm quality (in people producing sperm) [2].
- Psychological Stress: The pandemic has increased stress and mental health challenges for many, which can transiently affect menstrual cycles, ovulation, and libido.
Did you know? The majority of temporary menstrual or sperm changes after COVID-19 infection appear to resolve within three months [3].
Does COVID-19 Infection Impact Ovulation or Menstruation?
Recent research suggests COVID-19 infection can temporarily disrupt menstrual cycles, ovulation, and bleeding patterns.
COVID and Menstrual Cycles
- Irregular cycles, missed periods, and changes in flow have been reported in people with ovaries following COVID-19 infection [4].
- Most changes seem to resolve within 1-2 cycles after recovery.
COVID and Ovulation
- Acute illness can disrupt the hormonal signals that prompt ovulation, potentially causing delayed or missed ovulation for a cycle or two.
- Fever, inflammation, and physical stress may be responsible.
Summary Table: COVID-19’s Effects on Menstrual Health
| Effect | Frequency | Duration | Permanent? |
|---|---|---|---|
| Irregular cycles | Occasionally | 1-3 cycles | Usually not |
| Missed periods | Occasionally | 1-2 cycles | Usually not |
| Heavy/lighter bleeding | Occasionally | 1-2 cycles | Usually not |
| No periods after COVID* | Rare | >3 cycles (see doc) | Seek evaluation |
Scenario Example: Maya, age 30, noticed her period was a week late and lighter than usual after a mild COVID-19 case. Her cycles returned to normal within two months.
What Is the Impact of COVID-19 on Sperm Quality?
COVID-19 infection can temporarily decrease sperm quality, though permanent infertility after infection appears rare.
- Semen Analysis Findings: Studies show some people producing sperm experience lower sperm counts, reduced motility, and abnormal morphology for several weeks to a few months after COVID-19 infection [5].
- Fever and Inflammation: High fevers from any illness, including COVID-19, disrupt sperm production; the effects are typically reversible.
- No Evidence of Lasting Infertility: Sperm parameters generally return to baseline within 2-3 months following recovery.
| Sperm Parameter | Effect of Acute COVID | Resolution Time |
|---|---|---|
| Sperm Count | Often decreased | 1-3 months |
| Motility | Often decreased | 1-3 months |
| Morphology | Sometimes abnormal | 1-3 months |
COVID-19, AMH Levels, and Ovarian Reserve
AMH (Anti-Müllerian Hormone) is a marker for ovarian reserve. Concerns were raised early in the pandemic about COVID-19 affecting AMH levels or accelerating ovarian aging.
- Studies on COVID and AMH: Most current research shows no clinically significant long-term change in AMH levels after mild or moderate COVID-19 infection [6].
- Temporary Fluctuations: Some studies show minor, short-lived dips in AMH, likely related to inflammation or stress, but not a permanent reduction in ovarian reserve.
Key Point: COVID-19 infection does not appear to cause permanent decreases in ovarian reserve or accelerate reproductive aging.
COVID-19 and IVF Outcomes
People undergoing IVF often wonder whether past COVID-19 infection or vaccination will affect their chances of success.
- IVF Success Rates: Current data indicates that neither past COVID-19 infection nor vaccination negatively affects fertilization, embryo development, implantation, or pregnancy rates in IVF cycles [7].
- Recommendations: Most major reproductive societies recommend proceeding with IVF as planned, with proper screening and precautions.
| IVF Outcome | COVID (Past) Infection | COVID Vaccination | Recommendation |
|---|---|---|---|
| Egg Yield | No significant change | No change | Proceed |
| Fertilization | No significant change | No change | Proceed |
| Live Birth | No significant change | No change | Proceed |
How Does COVID-19 Affect Miscarriage Risk?
The risk of miscarriage after COVID-19 infection in the preconception or early pregnancy period is a key concern.
- First Trimester: Most studies have not shown an increased risk of miscarriage after mild COVID-19 infection before or during early pregnancy [8].
- Severe Cases: Severe illness, especially if accompanied by high fever, may increase the risk, similar to other febrile illnesses, though this is thought to be uncommon [9].
- Comparison to General Population: Overall miscarriage rates remain within the expected range for most people with prior COVID-19 infection.
Did you know? COVID-19 vaccination before or during pregnancy does not increase risk of miscarriage and may protect against severe disease [10].
COVID-19 Vaccines and Fertility
Concerns about the effect of COVID-19 vaccines on fertility have been widespread, but evidence strongly supports that vaccines do NOT harm fertility.
- Clinical Trials: No decrease in fertility has been observed in vaccine recipients compared to unvaccinated controls [11].
- Menstrual Cycle Effects: Some people report slight cycle changes after vaccination, but these are temporary.
- IVF and ART Cycles: Success rates are unchanged whether or not the patient received the vaccine.
- Professional Guidelines: Major medical organizations such as the ASRM, ACOG, and WHO endorse COVID-19 vaccination for people trying to conceive.
Does Long COVID Affect Fertility?
"Long COVID" refers to persistent symptoms lasting weeks to months after initial infection.
- Potential Impact: Fatigue, hormonal dysregulation, and ongoing inflammation may affect menstrual cycles or libido. Some studies have found increased reports of irregular bleeding or anovulation among people with long COVID, but strong, causal evidence is still lacking [12].
- Sperm Recovery: Most sperm-related changes from acute COVID-19 resolve, even in long COVID cases.
Key Point: As long COVID research is ongoing, discuss persistent symptoms with your healthcare provider, especially when trying to conceive.
COVID-19 and Pregnancy Outcomes
COVID-19 infection during pregnancy—not before conception—poses specific risks:
- Increased Risk: Hospitalization, preterm birth, and complications are more common in people who get COVID-19 while pregnant, especially in the second or third trimester [13].
- No Increased Birth Defect Risk: No evidence of increased birth defects in babies born to people with COVID-19.
- Vaccination is Protective: Vaccinated people have lower risk of severe illness and complications during pregnancy.
| Pregnancy Outcome | Effect of COVID-19 in Pregnancy |
|---|---|
| Preterm Birth | Modestly increased |
| Low Birth Weight | Slightly increased |
| Birth Defects | No increase seen |
Quick Facts Table: COVID-19 and Fertility
| Aspect | Effect of COVID-19 Infection | Effect of COVID-19 Vaccine | Clinical Significance |
|---|---|---|---|
| Menstrual Cycle | Temporary changes possible | Rare temporary changes | No long-term effect |
| Ovulation | Possible delay for 1-2 cycles | No effect | No persistent impact |
| Sperm Quality | Temporary decrease | No significant effect | Returns to normal |
| AMH (Ovarian Reserve) | No long-term impact | No effect | No effect |
| Miscarriage Risk | No increase for mild/moderate cases | No increase | Normal rates |
| IVF Outcomes | No adverse impact | No adverse impact | Proceed as planned |
| Pregnancy Outcomes | Increased risk if infected when pregnant | Vaccine reduces risk | Vaccinate before/during |
Myths vs. Facts About COVID-19 and Fertility
| Myth | Fact |
|---|---|
| COVID-19 vaccines cause infertility in men or women | Vaccines have no proven negative impact on fertility |
| If you catch COVID-19, you will be infertile | Most people recover fully with no lasting fertility effects |
| COVID-19 infection leads to permanent menstrual changes | Menstrual changes are almost always temporary |
| Sperm that is affected by COVID-19 will never recover | Sperm quality typically normalizes in 2-3 months post-infection |
| COVID-19 increases miscarriage risk preconception | No increased risk for mild/moderate prior infection |
| You should wait months after COVID infection to conceive | Most people can try to conceive once symptoms have resolved and cycles have normalized |
Risk Factors and How to Reduce Them
| Risk/Issue | Increased By | How to Reduce Risk |
|---|---|---|
| Menstrual/ovulatory disruption | Severe illness, stress | Manage stress, healthy sleep, supportive care |
| Sperm parameter changes | High fever, severe illness | Recover fully before conceiving, discuss timing |
| Poor IVF outcomes | Active infection | Postpone ART during symptoms |
| Pregnancy complications | Infection in pregnancy | Vaccination, masking, avoid exposure |
Did you know? The best way to protect your fertility during the pandemic is to stay up to date with vaccinations and maintain good overall health.
When Should You See a Fertility Specialist?
- If you have not conceived after 12 months (under age 35) or 6 months (over age 35) of trying.
- If you experience persistent or severe menstrual changes three months after recovering from COVID-19.
- If you notice a loss of periods or ovulation for multiple cycles.
- If semen analysis is abnormal three months after recovery.
- If long COVID symptoms are interfering with your reproductive plans.
- If you are planning IVF or ART and have had a recent infection—consult your provider about optimal timing.
Frequently Asked Questions About COVID-19 and Fertility
What does "COVID fertility" mean?
"COVID fertility" refers to the potential effects of COVID-19 infection or vaccination on a person's ability to conceive. It encompasses impacts on reproductive hormones, cycles, sperm quality, pregnancy rates, and reproductive health.
Can COVID-19 infection affect a person's ability to conceive?
Mild or moderate COVID-19 infection may temporarily affect ovulation, menstrual cycles, or sperm quality, but long-term infertility is not seen in most people. Full reproductive function generally returns within a few months.
Does COVID-19 cause menstrual cycle changes?
Yes, some people report temporary menstrual irregularities, skipped periods, or heavier/lighter bleeding after COVID infection. These typically resolve within 1-3 cycles after recovery.
Is it safe to try to conceive after recovering from COVID-19?
Yes, it is generally safe to start or resume trying to conceive once you have recovered and your cycles or semen analysis have returned to baseline. If symptoms or changes persist, discuss with your doctor.
Should I delay IVF or fertility treatment after COVID?
Many clinics recommend waiting until you have fully recovered, your cycles have normalized, or sperm parameters return to normal before starting IVF or ART. Typically a 2-3 month delay is sufficient if there were significant cycle or sperm changes.
Does COVID-19 infection increase the chance of miscarriage?
No consistent increase in miscarriage risk has been found following mild/moderate infection before or in early pregnancy. Severe cases or fevers may carry some risk, but this is generally low.
How does COVID-19 affect sperm quality?
Sperm count, motility, and shape can temporarily worsen after infection, but most people see full recovery within 2-3 months post-infection.
Will COVID-19 infection reduce AMH or ovarian reserve long-term?
No, available research does not support the idea that COVID-19 infection permanently lowers AMH or diminishes ovarian reserve.
Is the COVID-19 vaccine safe for people trying to conceive?
Yes, COVID-19 vaccines do not harm fertility in people with ovaries or sperm and are strongly recommended by reproductive health authorities.
Can the COVID-19 vaccine affect my menstrual cycle?
Some people experience subtle and temporary cycle changes, such as slightly earlier or later periods after vaccination. Cycles typically normalize quickly.
Should I get vaccinated if I’m planning to become pregnant or do IVF?
Yes. The benefits of vaccination—protection against severe COVID during pregnancy—outweigh any minimal, temporary side effects. Vaccination can be timed before conception or IVF for maximum protection.
Does COVID-19 infection affect IVF outcomes?
No, research shows no difference in egg yield, embryo development, or live birth rates for people with prior mild/moderate COVID-19 infection who have recovered and are otherwise healthy.
Is COVID-19 in pregnancy dangerous?
Pregnant people are at higher risk of complications from COVID-19, including hospitalization and preterm birth. Vaccination before or during pregnancy helps lower these risks.
What is "long COVID" and can it impact fertility?
Long COVID involves ongoing symptoms such as fatigue and hormonal changes. Some case reports note irregular cycles or libido changes, but direct infertility from long COVID has not been demonstrated.
Is there any difference between COVID and the flu regarding effects on fertility?
Both illnesses can cause temporary reproductive changes due to systemic illness and fever, but no evidence suggests COVID-19 uniquely impairs long-term fertility versus other viral infections.
Can supplements or lifestyle changes restore my fertility after COVID?
A healthy diet, regular exercise, stress reduction, and time usually suffice for recovery. There is no need for special fertility supplements unless otherwise indicated by your clinician.
Are fertility clinics open and safe during the pandemic?
Most clinics have adapted robust masking, screening, and hygiene protocols. Telehealth initial consults are often available.
How long after COVID infection should I wait before trying to conceive?
For mild cases, you can try once recovered and cycles or sperm parameters have normalized (often within a month or two). For severe illness, discuss timing with your healthcare provider.
Should I be worried about fertility because of COVID media stories?
Most concerning headlines are based on worst-case or rare situations. For the vast majority, COVID-19 and vaccination do not significantly impact fertility.
What questions should I ask my doctor about COVID and fertility?
Ask about timing for conception after infection, any warning signs to look for, monitoring cycles or sperm, whether to repeat hormone or semen tests, and the best vaccination timing.
References and Further Reading
- Rajput SK, Gupta KK et al. "Impact of COVID-19 on reproductive health." https://pubmed.ncbi.nlm.nih.gov/33509193/
- Ma L, Xie W et al. "Effect of SARS-CoV-2 infection upon male gonadal function: A single center-based study." https://pubmed.ncbi.nlm.nih.gov/32866439/
- Male V. "Menstrual changes after covid-19 vaccination." https://pubmed.ncbi.nlm.nih.gov/34673203/
- Edelman A, Boniface ER et al. "Association Between Menstrual Cycle Length and COVID-19 Vaccination: A U.S. Cohort." https://pubmed.ncbi.nlm.nih.gov/34968438/
- Temiz MZ et al. "Investigation of SARS-CoV-2 in semen samples and the effect of COVID-19 on male sexual health." https://pubmed.ncbi.nlm.nih.gov/33242140/
- Li R et al. "Effect of COVID-19 on ovarian reserve." https://pubmed.ncbi.nlm.nih.gov/34543922/
- Orvieto R et al. "Ovarian stimulation and IVF outcome during the COVID-19 pandemic." https://pubmed.ncbi.nlm.nih.gov/35107246/
- Di Mascio D et al. "Outcome of Coronavirus infections in pregnancy: a systematic review and meta-analysis." https://pubmed.ncbi.nlm.nih.gov/34846411/
- Diriba K et al. "The magnitude of COVID-19 pandemic-induced miscarriage." https://pubmed.ncbi.nlm.nih.gov/33022184/
- Trostle ME et al. "COVID-19 vaccination in pregnancy: Early experience from a single institution." https://pubmed.ncbi.nlm.nih.gov/34399528/
- Safrai M et al. "BNT162b2 mRNA Covid-19 Vaccine Does Not Impair Sperm Parameters." https://pubmed.ncbi.nlm.nih.gov/34904628/
- Iqbal FM et al. "Long covid – An overview." https://pubmed.ncbi.nlm.nih.gov/34326460/
- Allotey J, et al. "Clinical manifestations, risk factors, and maternal and perinatal outcomes of coronavirus disease 2019 in pregnancy: Living systematic review and meta-analysis." https://pubmed.ncbi.nlm.nih.gov/33402395/
- ASRM COVID-19 Task Force. "Patient Management and Clinical Recommendations During the Coronavirus (COVID-19) Pandemic." https://www.asrm.org/
- ACOG. "COVID-19 Vaccination Considerations for Obstetric-Gynecologic Care." https://www.acog.org/
- World Health Organization. "COVID-19 and pregnancy." https://www.who.int/
Disclaimer
This article is for informational and educational purposes only and does not constitute medical or mental health advice. It is not a substitute for speaking with a qualified healthcare provider, licensed therapist, or other professional who can consider your individual situation.
