Does stress actually cause infertility?

If you’ve ever told a struggling couple to “just relax,” you’ve repeated one of medicine’s most persistent myths. The idea that stress is a primary cause of infertility is told in clinic waiting rooms, around family dinner tables, and at baby showers across South Africa — and it places unfair blame on people already in pain. Let’s look at what the evidence actually shows, and where the real conversation needs to go.

The myth that won’t go away

The “just relax” claim has been circulating for decades. Its staying power comes partly from anecdote: someone’s cousin stopped trying, booked a holiday, and fell pregnant the following month. That story feels true, and it travels fast.

In South African households, it also carries cultural weight. Family elders, church communities, and even some clinicians repeat it as wisdom. The problem is that it shifts responsibility onto the person already struggling. It implies that infertility is a psychological failure — that if you worried less, your body would cooperate. That framing is not only scientifically weak; it is harmful.

Worth naming directly: a widely cited 2001 US study suggested that a stress-reduction programme improved pregnancy rates in women undergoing fertility treatment. That finding was replicated inconsistently, and subsequent larger trials failed to confirm it as a reliable effect. The media coverage of the original study vastly outran its evidence base, and the “relax to conceive” narrative embedded itself in popular culture before the science could catch up.

What stress hormones actually do to reproduction

There is a real, modest biological signal here — it just does not work the way the myth suggests.

When the body perceives chronic stress, the hypothalamic-pituitary-adrenal (HPA) axis releases cortisol and adrenaline. Sustained high cortisol can suppress gonadotropin-releasing hormone (GnRH), which in turn reduces luteinising hormone (LH) and follicle-stimulating hormone (FSH). In practical terms, this can delay or suppress ovulation in some women. A 2021 study in Human Reproduction found that women with higher urinary alpha-amylase (a stress biomarker) had a 29% lower probability of conception in a given cycle compared to women with the lowest levels — meaning roughly three fewer conceptions per 10 women over a cycle, not zero conceptions.

That is a real signal. But it is not the same as saying stress causes infertility in the clinical sense, which refers to failure to conceive after 12 months of regular unprotected intercourse (or six months if you are over 35).

No local data from the South African Medical Research Council (SAMRC) or the South African Society of Obstetrics and Gynaecology (SASOG) currently quantifies stress as a standalone contributor to infertility prevalence in South Africa. What SASOG’s clinical guidelines do make clear is that identifiable physical causes — ovulatory dysfunction, tubal damage (including from untreated STIs or pelvic inflammatory disease), endometriosis, male factor infertility, and uterine abnormalities — account for the vast majority of infertility cases in clinical populations.

SA-specific context changes this picture significantly

South Africa carries a heavy burden of conditions that directly affect reproductive health. Untreated chlamydia and gonorrhoea cause tubal factor infertility. Tuberculosis — South Africa has one of the world’s highest TB burdens, according to the National Institute for Communicable Diseases (NICD) — can cause endometrial and tubal damage. HIV, now managed long-term by millions of South Africans on antiretroviral therapy, affects hormonal regulation and fertility outcomes in ways that are still being studied.

Diabetes and polycystic ovary syndrome (PCOS), both prevalent locally, disrupt the hormonal environment that stress is said to worsen. When a person with PCOS, insulin resistance, and significant psychosocial stress presents with infertility, telling her to “just relax” ignores at least three clinically treatable contributors.

For men, chronic stress does modestly reduce testosterone and sperm motility — a 2018 review in Fertility and Sterility found that perceived psychological stress was associated with lower sperm concentration and motility, but the effect size was small and inconsistent across populations. Male factor infertility is a significant contributor in roughly 40–50% of South African couples presenting to fertility clinics, yet it receives far less attention in the public narrative.

The victim-blaming problem in SA clinical settings

People experiencing infertility in South Africa already face stigma. For many women, the inability to conceive carries profound social consequences — in some communities, it affects marital stability, family belonging, and identity. Research from the University of Pretoria has documented the psychosocial burden of infertility among South African women, describing elevated rates of depression and anxiety that are often left unaddressed.

When a clinician or family member says “just relax,” they are — however unintentionally — suggesting that the person’s emotional state is the barrier. For someone who has already experienced pregnancy loss, years of trying, or invasive fertility treatment, that message compounds the distress rather than relieving it.

Treating the real emotional toll of infertility is legitimate and important. It is just not the same as claiming that treating it will resolve infertility.

What good psychological support actually does

Psychological support for people experiencing infertility has a clear, evidence-based purpose: it improves quality of life, reduces clinical anxiety and depression, and helps people make informed decisions about treatment. A 2019 Cochrane review found that psychological interventions significantly reduced anxiety and depression scores in people undergoing fertility treatment — but did not find consistent evidence that they improved live birth rates.

That distinction matters. Support is valuable because infertility is genuinely distressing — not because stress reduction is a fertility treatment.

SADAG (South African Depression and Anxiety Group) offers counselling referrals and support for people experiencing the emotional weight of infertility. Reach them on 0800 567 567 (free call, available 7 days a week). Lifeline SA is also available on 0861 322 322.

Getting access to proper fertility care in SA

Access to fertility care in South Africa

Public sector: Start at your nearest community health centre (CHC) or district clinic. A GP or clinic nurse can request baseline investigations — a semen analysis, day-3 FSH, and pelvic ultrasound — before referring you to a district or regional hospital’s obstetrics and gynaecology unit. Specialist fertility services at public hospitals are limited and waiting lists are long, particularly outside Gauteng, the Western Cape, and KwaZulu-Natal.

Private sector costs: A consultation with a private gynaecologist or reproductive specialist typically costs R1,200–R2,500 per visit. A basic fertility workup (semen analysis, hormonal bloods, and sonar) runs R3,000–R6,000. A single cycle of intrauterine insemination (IUI) costs roughly R5,000–R10,000. In-vitro fertilisation (IVF) starts at around R35,000–R55,000 per cycle at most private fertility clinics, excluding medication, which can add R15,000–R25,000.

Medical aid and PMBs: Infertility investigation is not a Prescribed Minimum Benefit (PMB) under the Medical Schemes Act — meaning your medical aid is not legally required to cover it. Some comprehensive medical aid plans (Discovery, Bonitas, Momentum) offer fertility benefits as optional riders or within certain plans, but cover varies significantly. Check your plan’s benefit schedule and request pre-authorisation before any procedure.

Practical barriers: Load-shedding affects clinics’ ability to store hormone-sensitive medications and run ultrasound equipment reliably — ask your clinic whether they have generator backup. Transport costs to specialist centres in major cities can be prohibitive for patients in rural areas. The Reproductive Medicine special interest group under SASOG is working to improve referral pathways, but equitable access remains a significant challenge.

When to see a doctor

See your GP or gynaecologist if:

– You are under 35 and have been trying to conceive for 12 months without success.

– You are 35 or older and have been trying for six months.

– You have a known condition (PCOS, endometriosis, past pelvic infection, irregular periods) that may affect fertility.

– Your male partner has never had a semen analysis — this should be one of the first tests, not the last.

– You are experiencing significant distress, anxiety, or depression related to fertility — ask for a referral to a psychologist or counsellor, regardless of where you are in the fertility workup.

Bottom line

• The “just relax” myth is harmful. It implies emotional control is a fertility treatment — it is not.
• Stress has a modest, real biological effect on ovulation and sperm quality, but it is rarely the primary cause of clinical infertility.
• In SA, physical causes dominate — tubal damage from infections, PCOS, endometriosis, and male factor infertility are the leading contributors and all require medical evaluation.
• Psychological support is valuable because infertility is distressing, not because reducing stress reliably restores fertility.
• Get a proper workup. Both partners need investigation. Start at a public clinic or ask your GP for a referral — do not wait years in the hope that lifestyle changes alone will resolve a structural problem.