April is Stress Awareness Month. Which, let’s be honest, feels particularly relevant when you’re on the fertility journey. If you’ve been trying to conceive for a while, you’ve probably heard all sorts of conflicting advice about stress. Some people will tell you that the moment they ‘stopped worrying,’ boom – pregnant. Others have probably told you to ‘just relax,’ as though that’s somehow a switch you can flip. Meanwhile, you’re left wondering: does stress actually impact fertility in any meaningful way?

Short answer? It’s complicated. Not because we’re dodging the question – it’s genuinely where the research sits at the moment. What we do know is worth understanding, though. Because that understanding can make it a little easier to look after yourself and make steadier, more confident choices during what can be an emotionally intense time.

Understanding cortisol and your body’s stress response

When pressures begin to build, whether it’s a tight deadline, money concerns, or the emotional rollercoaster that can come with trying to conceive, your body responds by releasing cortisol. You’ve probably heard it called the ‘stress hormone’, yet cortisol isn’t actually the villain it’s often made out to be; it’s actually essential for survival.

Think of it as your body’s built-in alarm system. When you run into something stressful, cortisol steps in to help you handle it. It raises your blood sugar to give you a quick burst of energy, sharpens your focus, and temporarily eases off on functions that aren’t essential in that moment. Digestion, immune function, and reproductive processes all take a back seat when your body thinks you’re in danger.

The issue isn’t cortisol itself. The issue is chronic stress, when that alarm system never really switches off. When cortisol stays elevated for extended periods, it starts interfering with your hormone balance. And that’s where things get relevant for fertility.

Does stress impact fertility? What the research actually says

Here’s what might surprise you. There isn’t strong evidence of a direct cause-and-effect relationship between stress and inability to conceive. Women get pregnant every single day in incredibly stressful circumstances, like wars and natural disasters, and amid personal trauma. If stress were an absolute barrier to conception, the human species would have struggled to survive.

Yet, that doesn’t mean stress has no impact. Research tends to show a more gradual effect. Stress rarely shuts down fertility by itself, but it can unsettle the hormonal rhythm your body relies on to keep ovulation regular and the reproductive system working smoothly. When cortisol remains high over time, it begins to affect the hypothalamus, the area of the brain that coordinates reproductive hormones. As that balance shifts, cycles may become unpredictable, ovulation can be missed, and for some women, periods may pause for a while.

Stress may also lead to psychosexual problems, especially in men. In particular, premature ejaculation and even erectile dysfunction. In women, this may look like vaginismus. If these are issues affecting you, it’s important to address the underlying stress with appropriate counselling.

“Although no study has effectively pinpointed a direct link between stress and infertility, we can’t ignore the real likelihood of stress negatively impacting successful conception,’ explains Dr Kale, Fertility Consultant at The Fertility & Gynaecology Academy. ‘What we see in practice is that stress creates a cascade of effects. Disrupted sleep, changes in eating habits, hormonal imbalances – they collectively make conception more challenging. It’s rarely about stress alone. Rather, it’s how stress interacts with other factors in your life.”

The male factor: Stress and sperm quality

Most of the conversation about stress and fertility focuses on women, but there’s emerging evidence that male fertility doesn’t escape unscathed either. Research has shown that chronic stress affects sperm quality in several ways.

There’s some particularly interesting work being done around sperm DNA integrity. DNA damage affects sperm quality, and emerging evidence suggests that exposure to stress hormones may increase this damage. When cortisol levels stay elevated, it impacts testosterone production. Testosterone is crucial for healthy sperm development, so lower levels mean potentially reduced sperm count, decreased motility, changes in morphology.

Some studies have noticed a pattern between higher stress levels in men and changes in semen quality. A 2025 study from Massachusetts General Hospital found that men who reported the most stress tended to have noticeably lower sperm counts than those who felt the least stressed. Other research has also suggested that ongoing work-related pressure may be linked to higher levels of sperm DNA fragmentation.