Can Antidepressants Cause Infertility? | What Research Shows

Research suggests certain antidepressants may affect fertility in both sexes, though untreated depression also plays a role.

Starting an antidepressant often comes with a long list of possible side effects—weight changes, low libido, trouble sleeping. But the question of whether the medication itself could affect your chances of having a child later tends to sit lower on the worry list. It should probably sit higher, because the answer isn’t simple.

The short version: some studies do link antidepressants—especially SSRIs—to reduced fertility in both men and women. Yet depression itself can lower fertility just as much, making it hard to separate cause from effect. This article walks through what the research actually says and how to think about the risks.

Understanding The Potential Connection

Antidepressants, particularly selective serotonin reuptake inhibitors (SSRIs), work by altering neurotransmitter levels in the brain. Those same neurotransmitters also influence reproductive hormones. Serotonin receptors exist in the ovaries, testes, and pituitary gland, so it’s biologically plausible that SSRIs could affect fertility.

One well-studied mechanism involves prolactin. SSRI exposure may raise serum prolactin to levels that impair ovulation in women, potentially reducing conception probability. Elevated prolactin can also interfere with sperm production in men.

Still, the data is far from conclusive. Many studies can’t fully control for the fact that people taking antidepressants also have depression or anxiety—conditions that independently hurt fertility. That confound makes it difficult to pin the effect solely on the medication.

Why The Link Is Hard To Pin Down

Teasing apart whether antidepressants cause infertility or are simply associated with it requires looking at multiple layers of evidence. Here are the main reasons researchers haven’t settled the question:

• Untreated depression itself: Depression can disrupt ovulation, reduce libido, and lower sperm quality. One analysis found that untreated depression or anxiety reduced pregnancy and live birth rates by about half.
• Conflicting study results: While a meta-analysis shows SSRIs negatively affect semen quality, another study found no significant impairment in sperm parameters. The evidence is mixed.
• Different drug classes: Not all antidepressants act the same. For example, duloxetine at 60 mg showed no impact on sperm quality in one study, unlike some SSRIs.
• Dose and duration matter: A case-control study found that women taking antidepressants for more than six months had nearly three times the odds of infertility, suggesting longer use may carry higher risk.
• Fertility treatment adds another layer: Studies on IVF patients show slightly reduced pregnancy rates in women taking antidepressants, but the effect size is small and may be driven by underlying depression.

The bottom line from the research community: there’s enough signal to warrant caution, but not enough to say antidepressants directly cause infertility in most people.

What Studies Show About Female Fertility

For women, the conversation often centers around ovulation and implantation. Harvard Medical School’s report notes that SSRIs decrease IVF pregnancy rates in women undergoing fertility treatment, though the effect may be influenced by depression severity. Another study found that maternal antidepressant use is associated with first-trimester pregnancy loss, with risk varying by drug type.

Beyond IVF, a large Swedish study observed slightly reduced odds of pregnancy and live birth in women who took antidepressants before attempting conception naturally. The absolute reduction was modest, but consistent across multiple analyses.

It’s also worth noting that some of the reproductive effects may be reversible. Once the medication is adjusted or discontinued (under medical guidance), prolactin levels often return to normal, and ovulation can resume. The key is working with a doctor to weigh the risks of untreated depression against potential medication effects.

These findings suggest a pattern, but the effect sizes are small and confounded by depression itself. Individual responses vary widely.

What The Evidence Says About Male Fertility

In men, the focus is on sperm quality—count, motility, and shape. Research in this area is more consistent, though not unanimous. A 2022 meta-analysis found that SSRIs have a negative effect on semen quality, and Mayo Clinic lists antidepressants among medications that can affect sperm health. Here are key factors to consider:

1. SSRIs and sperm count: The first report implicating SSRIs was a case study of two men on citalopram who developed low sperm count (oligozoospermia). Larger studies later confirmed a modest reduction.
2. Sperm motility and morphology: Male anxiety and depression also worsen sperm motility and increase DNA fragmentation, making it hard to separate the drug’s effect from the condition’s effect.
3. Individual variability: Not all men experience changes. Some studies show no significant impairment, and the effects appear reversible after stopping the medication.

The clinical takeaway is that men who are trying to conceive with their partner may want to discuss sperm analysis before and during antidepressant use, particularly if they have other fertility risk factors. Again, untreated depression itself can damage sperm quality—so the decision isn’t straightforward.

Balancing Risks: Medication vs. Untreated Depression

It’s easy to focus on the medication and forget that untreated depression is itself a powerful fertility disruptor. One analysis from the MGH Center for Women’s Mental Health found that untreated depression or anxiety reduced pregnancy and live birth rates by roughly half. That’s a larger effect than what most studies attribute to antidepressants.

Per the Cleveland Clinic’s male infertility definition, the condition affects a man’s ability to get his partner pregnant, and they note that medications are one of many possible causes. But depression and anxiety also impair sexual function, lower libido, and increase cortisol, which suppresses reproductive hormones.

For couples trying to conceive, the best approach involves treating depression effectively—whether with medication, therapy, or both—while monitoring reproductive health. In some cases, switching to an antidepressant with a lower likelihood of affecting fertility (like bupropion or certain SNRIs) may be an option worth discussing with a psychiatrist.

The table highlights that the risks of untreated depression often outweigh the potential medication effects. Individual decisions should be made with a healthcare provider who knows your full history.

The Bottom Line

Antidepressants, particularly SSRIs, may influence fertility in both men and women through mechanisms like elevated prolactin and reduced sperm quality, but the evidence is mixed and the effect sizes are modest. Untreated depression itself can be a stronger barrier to conception. The safest course is to address mental health while monitoring reproductive function with your doctor.

A reproductive psychiatrist or your prescribing doctor can help you weigh whether your current antidepressant fits your family-building goals, and whether a timed sperm analysis or ovulation tracking makes sense for your situation.