How to Support Your Fertility in Your 40s: Evidence-Based Strategies

15th Jul 2024

If you're in your 40s and dreaming of starting or growing your family, we want you to know something important: you're not too late. Yes, the journey looks a little different than it would have a decade ago — but "different" doesn't mean "impossible." We're here to walk alongside you with honest, practical guidance for this chapter of your fertility story.

Transparency Notice: FertilitySmart produces and sells fertility supplements. This article is written for educational purposes. While we strive for accuracy and balance, readers should be aware of this commercial relationship when evaluating our content.

In this article, we'll walk through evidence-based ways to support fertility in your 40s — focusing on natural approaches like lifestyle shifts and nutritional support rather than medications that might bring unwanted side effects.

Important Disclaimer: This article is for informational purposes only and does not constitute medical advice. Consult your healthcare provider before starting any supplement regimen, especially if you are pregnant, trying to conceive, or taking medication. If you are undergoing fertility treatment, discuss any supplements with your fertility specialist before use, as some supplements may interact with fertility medications.

Let's start with the question so many of you have asked us:

Can I Get Pregnant After 40?

Section Summary: Yes, pregnancy after 40 is possible, though fertility does decline compared to earlier decades due to reduced egg quantity and quality. Many couples now start families later in life for career, financial, and personal reasons. Natural conception remains achievable for many women over 40, and targeted lifestyle changes, nutritional support, and medical guidance can meaningfully improve the chances of successful conception.

The short answer? Absolutely yes. Now, here's the honest part: your fertility at 40 isn't what it was in your 20s¹⁵, and there will be some extra challenges along the way. But understanding how to support your fertility naturally can genuinely improve your chances of conceiving.

And here's something that might reassure you — you're far from alone in this. We've seen a real shift in how couples approach family planning. More and more people are choosing to start families later, whether that's because of career goals, wanting financial stability first, or simply taking time for personal growth before diving into parenthood.

Section Summary: Pregnancy after 40 is absolutely possible, though it comes with additional challenges compared to earlier decades. Many couples are choosing to start families later, driven by career goals, financial planning, and personal growth priorities. Knowing how to support fertility naturally through lifestyle and nutrition can meaningfully improve conception chances.

What Do You Need to Know About Fertility at 40?

Section Summary: After 40, both egg quantity and quality decline, with eggs becoming more susceptible to chromosomal abnormalities that can affect conception success and increase miscarriage risk. Understanding these biological changes is important for setting realistic expectations and taking proactive steps — including improving egg quality through targeted nutrition, antioxidant supplementation, and lifestyle modifications.

While male fertility matters too (and we'll touch on that), the focus for many couples tends to be on female fertility — and that's understandable. Factors like egg supply and egg quality play a huge role in your chances of getting pregnant.

How Does Egg Quality Change After 40?

Here's the thing we wish weren't true: as we get older, the number of eggs available for conception goes down. And the eggs that remain? Their quality can be affected too, which makes achieving a healthy pregnancy more of a challenge.

What's happening at a deeper level is that the DNA within each egg becomes more prone to errors and chromosomal abnormalities as women move through their 40s¹⁶. These changes can make conception harder and also raise the risk of miscarriage — which is exactly why understanding how to support egg quality after 40 becomes so important.

Section Summary: After 40, egg quantity decreases and remaining eggs become more susceptible to chromosomal abnormalities, increasing both conception difficulty and miscarriage risk. However, egg quality can be supported through antioxidant-rich nutrition, targeted supplementation, and lifestyle modifications that reduce oxidative stress on reproductive cells.

How Can You Support Fertility Naturally in Your 40s?

Section Summary: Research-informed strategies for naturally supporting your fertility after 40 include taking targeted supplements (CoQ10, folate, vitamin D, omega-3s), reducing or eliminating alcohol, getting regular moderate exercise, eating a Mediterranean-style diet rich in antioxidants and healthy fats, stopping smoking, managing stress through mindfulness practices, and prioritising 7–9 hours of quality sleep nightly.

Natural Fertility Support Strategies in Your 40s
Strategy	How It Supports Fertility	Implementation Tips	Priority Level
Targeted Supplementation	CoQ10, antioxidants, and folate support mitochondrial function and egg quality, which naturally decline with age.	Consider CoQ10 (200–600 mg daily for at least 8–12 weeks before conception, with longer durations of around 3 months aligning with the full ~85–90-day oocyte maturation window), vitamin D, folate, and prenatal vitamins; discuss supplementation with your fertility specialist.	High
Alcohol Reduction	Alcohol impairs egg quality and ovulation; minimising intake optimises reproductive health and hormone balance.	Aim for minimal alcohol consumption; consider complete abstinence during active conception attempts.	High
Regular Moderate Exercise	Movement improves circulation, reduces stress, supports weight management, and helps regulate hormones essential for fertility.	Follow general WHO physical-activity guidance — about 150 minutes of moderate aerobic activity weekly plus 2–3 strength sessions; very high-volume vigorous exercise (>5 hrs/week) has been linked to reduced fecundability in some cohorts.	High
Anti-Inflammatory Diet	Chronic inflammation impairs egg quality and ovulation; antioxidant-rich foods reduce oxidative stress affecting reproductive health.	Prioritise whole grains, fatty fish, leafy greens, colourful vegetables, berries, nuts, and seeds; limit processed foods and refined carbohydrates.	High
Smoking Cessation	Smoking is associated with reduced ovarian reserve markers and accelerated egg quality decline; quitting can improve fertility outcomes over time.	Seek support through smoking cessation programmes, counselling, or medication if needed; the benefits to fertility are immediate.	High
Stress Management	Chronic stress elevates cortisol and disrupts reproductive hormone signalling and ovulation; stress reduction supports hormone balance.	Practice meditation, yoga, deep breathing, journaling, or therapy; aim for 10–20 minutes of calming practice daily.	Medium
Sleep Optimisation	Adequate sleep supports hormone regulation and ovulation; poor sleep is associated with disrupted reproductive hormone signalling and lower ovarian reserve markers in observational studies.	Aim for 7–9 hours nightly; maintain consistent sleep-wake times; create a dark, cool sleep environment.	Medium

Before we dive in, it's worth mentioning that while the pressure can feel especially intense after 40, these tips honestly work just as well for younger couples too.

In fact, the term 'geriatric pregnancy' has been retired by ACOG (2022) in favour of 'advanced maternal age' — typically applied from age 35, now stratified in 5-year bands (35–39, 40–44, 45+) to better reflect the gradual nature of these changes. So it's no surprise that searches for 'how to increase fertility after 35' have been climbing steadily.

There's something genuinely comforting about knowing you're not the only one navigating this. So many couples share the same hopes and frustrations. But we also know that doesn't make your own journey any less personal or any less emotional.

When the biological clock feels like it's ticking louder, it's natural to want to jump straight to bigger interventions — fertility drugs, IVF, the options you've probably already Googled at 2am. But here's what we'd love you to consider first: there are gentler, more affordable approaches that are genuinely worth trying before going down that road.

The following tips on supporting fertility naturally apply to both partners and can help you avoid the potential side effects, stress, and financial strain that come with more aggressive treatments.

Consider Targeted Nutritional Support

This is one area where a small daily habit can make a real difference. Natural supplements are designed to support your reproductive health gently and holistically, and they work beautifully alongside the lifestyle changes we'll cover below. Evidence increasingly points to certain supplements playing a meaningful role in fertility support.

Among the key ingredients worth knowing about, Coenzyme Q10 (CoQ10) stands out as one of the most well-studied. It's a naturally occurring compound, and the evidence around its antioxidant properties is genuinely encouraging — it may support mitochondrial energy production in eggs and help protect cells from oxidative damage^1,2.

The Potential Benefits of CoQ10

Here's what the evidence tells us about CoQ10 and reproductive health:

Ovulation - In small trials of women with clomiphene-resistant PCOS, CoQ10 used alongside ovulation-induction medications was associated with higher ovulation and clinical pregnancy rates³. Evidence in women with irregular cycles outside this specific PCOS context is limited.
Fertilisation - CoQ10 may provide energy support for the fusion of egg and sperm in laboratory studies².
Egg quality - Most CoQ10 fertility evidence relates to oocyte mitochondrial energy and egg quality, particularly in women with diminished ovarian reserve^1,4. Evidence on endometrial receptivity is limited and not yet established.

For men, the findings are encouraging too. Evidence points to CoQ10 potentially supporting:

Sperm count and quality
Sperm motility
Overall sperm health

CoQ10 dosing in research ranges from 200 to 600 mg daily, typically taken for 8-12 weeks before conception (with longer durations of around 3 months aligning with the full oocyte maturation window⁵). Always discuss supplementation with your fertility specialist, as individual needs vary.

Important: If you take warfarin or other anticoagulants, blood-pressure medications, statins, or thyroid medication, please discuss CoQ10, omega-3, vitamin E, or iron supplementation with your GP or pharmacist before starting. CoQ10 may reduce warfarin's effectiveness; omega-3 and vitamin E at higher doses can increase bleeding risk; iron and calcium can interfere with thyroid-medication absorption.

Cut Down on Alcohol

We know — this one isn't always easy to hear, especially when a glass of wine feels like the one thing keeping you sane some evenings. But reducing alcohol really does go hand-in-hand with the other positive changes you're making. Together, these shifts add up to a healthier foundation for pregnancy.

Here's why it matters — the evidence shows that excessive alcohol intake can affect your reproductive health in several ways:

Excessive alcohol consumption may disrupt hormonal balance, affecting the menstrual cycle and ovulation⁶.
Heavy or regular alcohol intake has been linked to reduced sperm parameters⁷ and to lower oocyte yield and live-birth rates in IVF; effects on egg quality at lower doses are less clear-cut.
Alcohol can hinder the absorption of essential nutrients, such as folate, which are crucial for foetal development.

Top Tips for Cutting Your Alcohol Intake

These small, practical steps can bring you closer to the family you've been hoping for — and you might be surprised how quickly they start to feel normal:

Start by setting clear limits on alcohol intake and gradually reducing the frequency and quantity of your consumption.
Identify triggers that lead to excessive drinking, such as stress or social situations, and try to avoid them wherever possible.
Replace alcoholic beverages with non-alcoholic alternatives like mocktails or flavored sparkling water.

Get Some Exercise

Moving your body regularly is one of the most powerful things you can do for your fertility — but (and this genuinely surprised me when I first learned it) overdoing it can actually work against you. The sweet spot is moderate, consistent activity. Once you find a routine that works for your life, you'll start tapping into some real benefits:

Healthier reproductive organs, ovulation cycles, and sperm production thanks to enhanced blood circulation.
Reduced stress, anxiety, and their associated effects on hormonal balance and overall fertility.
A healthier overall body weight, which is a primary consideration for nurturing a pregnancy after 40.

Some Examples of Suitable Exercise

The best approach? Start gently and build from there. There's no need to go from zero to marathon overnight — in fact, that would be counterproductive. Here are some ways to ease in:

Focus on moderate exercise, as excessive intensity might lead to overexertion and hinder fertility.
Aim for aerobic exercises (like brisk walking or swimming) and strength training to maintain a balanced fitness program.
Consider activities like yoga or tai chi, which combine physical activity with stress reduction.

Modify Your Diet

Of all the changes on this list, this might be the simplest one to start today. What you eat has a direct influence on your overall health and, by extension, your fertility. Here's why it matters:

A balanced diet can help regulate hormones, improving ovulation and menstrual cycles.
Proper nutrition ensures your body receives essential vitamins and minerals necessary for reproductive health.
Maintaining a healthy weight through diet can positively impact fertility.

A Few Simple Dietary Recommendations

You don't need to overhaul everything overnight. Even a few thoughtful swaps can make a meaningful difference to your reproductive health and bring you closer to your family goals:

Prioritising whole foods like fruits, vegetables, whole grains, lean protein, and healthy fats.
Including foods rich in antioxidants, which may help protect eggs and sperm from damage. A few examples include berries, nuts, and leafy greens.
Stay hydrated by drinking plenty of water to support overall health and reproductive function.

Stop Smoking

If you've been reading up on fertility, you probably already know this one — but it's worth really understanding why quitting smoking matters so much:

Smoking is associated with reduced ovarian reserve markers (AMH, antral follicle count) and earlier menopause, reflecting accelerated depletion of the resting follicle pool⁸.
It can hinder blood flow to the reproductive organs, impacting both egg and sperm quality.
Smoking is associated with an increased risk of pregnancy complications and a higher chance of miscarriage.

A Few Helpful Tips to Help You Quit

Let's be real — quitting is hard, even when your motivation couldn't be stronger. If you're finding it tough, please don't beat yourself up. These strategies can help support you through it:

Consider seeking counselling or therapy to address the psychological aspects of smoking addiction.
Consider evidence-based nicotine replacement therapies (NRTs) — your GP or pharmacist can advise on the safest options if you're trying to conceive — alongside in-person or online support groups.
Reach out to friends and family for encouragement to ensure accountability during your mission to quit.

Manage Stress

This one hits close to home for so many of us. The fertility journey itself can be a major source of stress — which is cruelly ironic, because stress can actually make conception harder. The connection between stress and fertility challenges is well-documented, and it shows up in real, physical ways:

Significant or chronic psychological stress has been associated with reduced sperm concentration, motility, and morphology in men⁹.
High stress levels can lead to unhealthy coping mechanisms, such as overeating or excessive alcohol consumption, further impacting fertility.
Chronic stress can lead to irregular menstrual cycles and hinder ovulation¹⁰.

How to Combat Stress

The good news? Even small, consistent stress-relief practices can make a noticeable difference. Here are some approaches worth trying:

Introduce light physical activity and consider meditation to reduce stress and improve your emotional well-being.
Seek support from a therapist or counselor to address the root causes of stress and develop healthier coping mechanisms.
Create a support network of friends, family, and colleagues to act as an outlet for sharing and managing stress.

Prioritise Sleep

Here's one that often gets overlooked: sleep plays a far bigger role in your fertility than most people realise. It genuinely surprised us how strong the connection is. Making sleep a priority is one of the kindest things you can do for your reproductive health because:

Sleep plays a critical role in hormone regulation, particularly those related to reproduction.
Lack of sleep can affect menstrual regularity and ovulation¹⁷.
Quality sleep is essential for the body's ability to recover and repair, which impacts all of your organs, including your reproductive system.

Ways to Encourage Healthier Sleeping Patterns

Small changes to your sleep routine can pay real dividends. Here are our favourite tips for creating an environment that actually supports restful sleep:

Maintain a consistent sleep schedule by going to bed and waking up at the same time each day.
Create a comfortable sleeping environment by investing in a good mattress and using blackout curtains to eliminate excess light.
Avoid using electronic devices before bedtime, as the blue light emitted can disrupt your circadian rhythm.

Section Summary: Seven key natural strategies support fertility after 40: targeted supplementation (CoQ10, folate, vitamin D, omega-3s), reducing alcohol intake, regular moderate exercise, a Mediterranean-style antioxidant-rich diet, smoking cessation, stress management through mindfulness and therapy, and prioritising 7–9 hours of quality sleep. These lifestyle modifications work synergistically to support egg quality, hormonal balance, and overall reproductive health.

Supporting Your Fertility Journey

We hope this guide has given you both practical tools and a bit of reassurance. The strategies we've covered — from targeted nutrition to lifestyle changes — really do form a solid foundation for supporting your fertility in your 40s. While supplements and lifestyle shifts can't turn back the clock on egg supply, they may help support the quality of the eggs you have and create the best possible conditions for conception.

At FertilitySmart, we offer both fertility supplements for women and fertility supplements for men that contain research-informed ingredients discussed in this guide. Explore our range of fertility supplements formulated with the evidence-informed nutrients discussed in this guide.

Frequently Asked Questions

What are the chances of getting pregnant naturally at 40?

Natural conception rates decline with age. Research indicates approximately a 5% chance per menstrual cycle at age 40, compared to around 20–25% per cycle in younger women in their late 20s. However, cumulative pregnancy rates over 12 months are considerably higher than the monthly rate might suggest. Many women over 40 do conceive naturally, and lifestyle changes including diet, supplementation, and stress management can meaningfully support your odds.

Which supplements are most important for fertility after 40?

CoQ10 is particularly valued in research after 40, as it supports mitochondrial energy production in eggs, which naturally declines with age. Folate (or folic acid) remains essential for neural tube development and may support egg quality. Vitamin D supports hormone regulation¹¹, and while some observational studies suggest a possible association with implantation outcomes, the evidence is still emerging and not yet conclusive¹². Omega-3 fatty acids may reduce inflammation and support cell integrity¹³. A comprehensive prenatal supplement combined with CoQ10 is a common recommendation for women over 40. Discuss specific dosing with your healthcare provider, as individual needs vary.

Does egg quality decline at the same rate for all women?

No, the rate of egg quality decline varies significantly between individuals. Genetics, overall health, lifestyle factors, and environmental exposures all influence how quickly egg quality changes. Some women maintain good ovarian reserve and egg quality well into their 40s, while others may experience earlier decline. An AMH (anti-Müllerian hormone) blood test and antral follicle count ultrasound can help assess your individual ovarian reserve.

How does male fertility factor in when the female partner is over 40?

Male fertility also declines with age, though research suggests this occurs less dramatically than female fertility decline. After 40, men may experience increased sperm DNA fragmentation, declines in normal morphology, and possible changes in motility (evidence on motility specifically is mixed). When both partners are over 40, optimising male fertility through diet, exercise, supplementation (zinc, L-carnitine, antioxidants), and lifestyle changes becomes even more important, as healthy sperm can partially compensate for age-related changes in egg quality.

When should I see a fertility specialist if I am over 40?

Current fertility guidelines recommend seeking specialist evaluation earlier for women over a certain age threshold. According to NICE guidance¹⁴, women aged 36 years and over should be offered specialist consultation before 1 year of trying to conceive, rather than waiting the full 12 months recommended for younger women under 35. For women over 40, some specialists suggest consultation even before actively trying, to assess ovarian reserve and discuss the full range of options including natural conception support, IUI, and IVF. Early evaluation provides the most time for informed decision-making.

Can lifestyle changes really make a difference to fertility at 40?

Yes, research supports that lifestyle modifications can meaningfully improve fertility outcomes in your 40s. Several studies have linked a Mediterranean-style diet, healthy weight, regular exercise, and stress management to better IVF outcomes — though one large study (Karayiannis 2018) found this association mainly in women under 35. The general lifestyle picture still matters at 40+, but the specific Mediterranean-diet/IVF benefit may be smaller in this age group. While lifestyle changes can't reverse age-related egg depletion, they may help support the quality of your remaining eggs and create the best possible conditions for conception.

References

Xu Y, Nisenblat V, Lu C, et al. Pretreatment with coenzyme Q10 improves ovarian response and embryo quality in low-prognosis young women with decreased ovarian reserve. Reproductive Biology and Endocrinology. 2018. doi:10.1186/s12958-018-0343-0
Ben-Meir A, Burstein E, Borber A, et al. Coenzyme Q10 restores oocyte mitochondrial function and fertility during reproductive aging. Aging Cell. 2015. doi:10.1111/acel.12368
Florou P, Anagnostis P, Theocharis P, et al. Does coenzyme Q10 supplementation improve fertility outcomes in women undergoing assisted reproductive technology procedures? Journal of Assisted Reproduction and Genetics. 2020. doi:10.1007/s10815-020-01906-3
Lin L, Li J, et al. CoQ10 pretreatment for women with diminished ovarian reserve undergoing IVF/ICSI. Annals of Medicine. 2024. doi:10.1080/07853890.2024.2389469
Gougeon A. Human ovarian follicular development: from activation of resting follicles to preovulatory maturation. Annales d’Endocrinologie. 2010.
ASRM Practice Committee. Optimizing natural fertility: a committee opinion. Fertility and Sterility. 2022.
Ricci E, et al. Alcohol intake and semen variables. Reproductive BioMedicine Online. 2017.
ASRM Practice Committee. Smoking and infertility: a committee opinion. Fertility and Sterility. 2018.
Radwan M, et al. Occupational stress and sperm DNA fragmentation. International Journal of Impotence Research. 2016.
Whirledge S, Cidlowski JA. Glucocorticoids, stress, and fertility. Minerva Endocrinologica. 2010.
Pilz S, et al. Vitamin D and Fertility. Nutrients. 2022.
Chu J, Gallos I, Tobias A, et al. Vitamin D and assisted reproductive treatment outcome: a systematic review and meta-analysis. Human Reproduction. 2018. doi:10.1093/humrep/dex326
Stanhiser J, Jungheim ES, et al. Omega-3 fatty acid supplementation and fecundability. Human Reproduction. 2022.
National Institute for Health and Care Excellence (NICE). Fertility problems: assessment and treatment (NG257). NICE Guidelines. 2026.
ASRM Practice Committee. Female age-related fertility decline: a committee opinion. Fertility and Sterility. 2014.
Franasiak JM, et al. The nature of aneuploidy with increasing age of the female partner: a review of 15,169 consecutive trophectoderm biopsies. Fertility and Sterility. 2014.
Kloss JD, et al. Sleep, sleep disturbance, and fertility in women. Sleep Medicine Reviews. 2015.

Marina Carter

Fertility Health Writer at FertilitySmart

Marina Carter is a specialist health writer with nearly a decade of experience in reproductive health, fertility nutrition, and research-informed conception support. She has authored over 30 in-depth articles for FertilitySmart, translating peer-reviewed research into clear, practical guidance for individuals and couples on their fertility journey. Read full bio →

These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease.