Votre alimentation et votre mode de vie peuvent-ils améliorer la fertilité ?

What foods help support fertility?

Fertility is a complex subject - there’s no one-size-fits-all approach to improving your chances of having a baby. If you’re struggling to get pregnant, there may be underlying health conditions involved, so it's important to speak with your doctor about potential causes. But while changing your lifestyle alone won’t guarantee pregnancy, nourishing your body with wholesome foods can support your overall health. This may, in turn, benefit reproductive function in both men and women.

Helena Barham-Coppola, nutritional therapist and founder of Nourish&Be, London, explains that reproduction is an energy-and nutrient-intensive process. For this reason, she emphasises that both men and women should nourish their bodies with enough energy and nutrients when trying to conceive.

“For example, loss of periods is often seen in women who restrict nutrients and energy, as well as in cases of high stress,” she says. “This makes sense on an evolutionary level - our bodies are less inclined to reproduce when they sense stress, famine, or danger.”

Barham-Coppola notes that diets that focus too heavily on restricting certain foods can negatively impact your nervous system, which may, in turn, affect your overall health.

“It’s a fine balance, of course, between eating healthily and not letting it become a source of stress,” she says. “Approaching food with love and kindness - and appreciating yourself for nourishing your body - can be a really positive way to strike a healthy balance.”

Helena Barham-Coppola

Can gut health improve fertility?

A healthy gut is central to your overall health. Feeding it with good bacteria (probiotics) and the fibre they need to thrive (prébiotiques) keeps your microbiome in balance. This balance does more than support digestion - it helps reduce systemic inflammation and plays a key role in regulating your mood through the gut-brain connection.

According to Barham-Coppola, a healthy gut may also play an important role in fertility and conception.

“If your gut isn’t functioning properly, then you struggle to absorb the nutrients you need,” she says. “This is especially true in the case of fertility.”

She notes that an unhappy, inflamed gut can lead to:

• A compromised immune system.

• Poor mental health.

• Higher levels of systemic inflammation.

The nutritionist explains that an imbalanced gut microbiome (gut dysbiosis) - where harmful bacteria outnumber good bacteria - can create an unfavourable environment for conception. Research suggests this imbalance may disrupt your hormone pathways and negatively affect fertility outcomes.¹

She highlights several symptoms to watch for that may suggest your gut is imbalanced and needs extra care and attention.

Ceux-ci incluent :

• Ballonnements.

• Increased flatulence.

• Diarrhée.

• Constipation.

• Irregular bowel movements.

• Gut pain.

Some of her favourite “gut soothers” are:

• Baked apples with cinnamon - the soluble fibre found in apples (pectin) acts “like a massage for the gut”.

• Bone broth - rich in collagen, which may help soothe and support repair of the gut lining.

Can stress make it harder to get pregnant?

Long-term stress can have a wide range of harmful effects on your body. While stress is something we talk about often, its impact is still frequently underestimated - particularly when it comes to reproductive health and the body’s fertility signals if you’re trying for a baby.

Barham-Coppola explains that a healthy menstrual cycle is regulated by two key hormones - luteinising hormone (LH) and follicle-stimulating hormone (FSH) - both of which are produced by the pituitary gland in the brain. She says that when you’re stressed, your body releases stress hormones telles que le cortisol, which can interfere with the signals that trigger the release of LH and FSH.

“This is how stress can lead to anovulation - a menstrual cycle with no egg released, therefore no chance of conception,” she explains.

“Stress is also a highly inflammatory state to be in, and can lead to metabolic dysregulation, gut and vaginal microbiome issues. Trying to conceive or not, a stress management plan is always good for your health and wellbeing.”

The best way to exercise for fertility

Maintaining a balanced routine of exercise and rest is important when trying to conceive. Recommended guidelines suggest doing at least 150 minutes of moderate physical activity, or 75 minutes of more vigorous exercise, across the week.

It’s important to stay active without overloading your nervous system. As Barham-Coppola explains, too little exercise can increase your chance of metabolic dysfunction, but too much can be just as harmful - if not more so.

“Exercise is a stressor, so too much of it can place strain on your body and soak up nutrients that could otherwise be used in priming it for reproduction,” she says. “Exercise also increases oxidative stress, which in small amounts is a good thing - keeping blood vessels flexible and supporting sperm development in the testes. However, too much oxidative stress can lead to DNA damage in sperm and eggs.”

The nutritionist emphasises that moderate physical activity is generally associated with better sperm health compared with very high training loads.² Evidence also suggests that cycling for around five hours per week may negatively affect sperm count in some men.³

For women, weight training may help improve insulin sensitivity and support better fertility outcomes. However, high levels of intense or heavy resistance training have been linked in some studies to reduced egg quality and poorer fertility outcomes.⁴ Research also indicates that both vigorous physical exercise, and, conversely, a sedentary lifestyle or high indice de masse corporelle (BMI) may be associated with infertility in both men and women.^{5 6}

Overall, evidence suggests that balance is key. Rather than pushing exercise to extremes or avoiding it all together - a moderate, consistent approach is likely most supportive when trying to optimise fertility.

Lifestyle changes that support male fertility

A lot of emphasis is often placed on women to 'prime' their bodies for conception through diet and lifestyle changes. However, as we’ve seen, men also play a vital part on the path to pregnancy.

“I cannot emphasise enough how overlooked men’s health is when it comes to fertility,” says Barham-Coppola. “Men need to be aware of how much the quality of their sperm plays a role in the reproductive process. What we are aiming for is minimal DNA damage in sperm to improve the chances of a healthy live birth."

She adds that recurrent miscarriages can sometimes be linked to poor sperm DNA quality, yet responsibility is often placed on women, which can take a significant emotional toll.

How long does it take to improve fertility?

Realistically, if a couple navigating a fertility journey begins giving their bodies some extra TLC today, it’s important to manage expectations. While these changes can meaningfully support overall health and may help improve fertility outcomes, they are not a miracle cure for underlying fertility-related health conditions.

If you're curious about how long it takes for these lifestyle adjustments to support everyday fertility, Barham-Coppola explains the typical timeframe and what is happening inside your body during this process.

“It takes 3 months for sperm and eggs to fully mature, so think of the 3 months pre-conception as a really important time for your future baby and its long-term health,” she says. “When I support fertility couples, I ideally like to work with them for 6 months to really make some changes to sperm and egg quality.”

Barham-Coppola notes that this process may be more straightforward in younger couples who have more time ahead of them. In older couples, where fertility naturally declines, time becomes more critical - though even a few months of preparation can still make a meaningful difference.