Preparing for Conception or IVF: A Book We Recommend

Patients preparing for conception or fertility treatment often ask what they can do in the weeks and months before beginning their journey. While there is an enormous amount of fertility information online, it can be difficult to distinguish practical, evidence-informed guidance from unsupported claims or one-size-fits-all advice.

At Pedieos IVF Center, we believe that well-informed patients are better equipped to participate in conversations about their care. For this reason, we would like to introduce The Egg & Sperm Quality Plan: A Science-Backed 90-Day Roadmap for Natural Conception and IVF Success, written by fertility specialist Dr Vasileios Sarafis.

The book is designed to help individuals and couples understand the period before natural conception, IUI or IVF and approach it with greater clarity and structure.

A structured approach for both partners

One of the book’s central themes is that fertility preparation should involve both partners. Rather than focusing exclusively on egg quality, it also considers sperm health and the contribution that both individuals make to conception and embryo development.

The book presents a structured 90-day framework covering areas such as nutrition, sleep, stress management, metabolic health, supplements and environmental factors. It also discusses the biological development of eggs and sperm during the months before conception.

This does not mean that every fertility outcome can be changed through lifestyle choices. Many causes of infertility require specialist investigation and medical treatment. However, understanding the preconception period may help patients make informed decisions, develop sustainable habits and prepare more confidently for the next stage of care.

“The medical treatment we use to stimulate the ovaries depend on hormones that promote egg production and maturation. However, a lot of other things help the final success of an IVF treatment. This book is a great source of information on all “supplementary” agents that significantly promote the final success, which is a healthy live birth.” – Dr. Krinos Trokoudes – Medical Director, Endocrinologist & Reproductive Medical Specialist

What readers will find inside

The book combines fertility education with practical tools intended to help readers organise their preparation.

Topics include:

    • A 12-week fertility-preparation roadmap with weekly checklist
    • Egg quality, sperm health and sperm DNA integrity
    • Nutrition and evidence-informed supplement guidance
    • Fertility considerations for patients over 40
    • PCOS, endometriosis and male-factor infertility
    • Understanding fertility investigations and diagnostic tests
    • Questions to consider when choosing an IVF clinic
    • Emotional resilience during treatment and after setbacks
    • Trackers, planners and questions to discuss with a fertility specialist

The book also includes a foreword by reproductive medicine specialist Dr Luca Gianaroli.

Information without unrealistic promises

Fertility treatment can be emotionally demanding, and patients are often exposed to advice promising dramatic improvements or guaranteed results. No book, supplement, diet or lifestyle programme can guarantee natural conception or IVF success.

A responsible fertility resource should help readers understand the available evidence while also recognising its limitations. Recommendations that may be suitable for one person may be unnecessary or occasionally unsuitable for another.

Supplements, significant dietary changes and decisions about fertility testing should therefore be discussed with a qualified healthcare professional, particularly when a patient has an existing medical condition or is already receiving treatment.

A recommended resource from Pedieos IVF Center

At Pedieos IVF Center, our role is to provide personalised fertility care based on each patient’s medical history, diagnosis and individual circumstances. We are recommending this book because it offers readers a structured introduction to fertility preparation while encouraging both partners to become informed participants in the process.

Readers interested in exploring the book can find the paperback and available editions through Amazon.

Get your copy of the book on Amazaon →

VIEW ON AMAZON

Written by Dr Vasileios Sarafis, a UK-trained Consultant Obstetrician, Gynaecologist and Fertility Specialist, the book draws on his clinical experience and training at C.Re.A.Te Fertility under Professors Geeta Nargund and Stuart Campbell.

This article is for general educational purposes and does not replace individual medical advice, diagnosis or treatment. Always discuss supplements, lifestyle changes and fertility decisions with your healthcare provider.

Genetic Screening in Egg Donation: What Patients Should Know

Genetic screening is an important part of responsible egg donation, helping fertility specialists identify and manage the risk of certain inherited conditions. However, as screening panels become increasingly extensive, an important question arises: how much genetic testing is appropriate?

A new review prepared by Aphrodite Egg Bank, the in-house egg bank of Pedieos IVF Center, presents both sides of the expanded carrier screening debate. Broader screening may provide useful information and support donor-recipient genetic matching. At the same time, it can uncover unexpected findings, create additional costs, affect donor privacy and sometimes cause healthy donors to be excluded unnecessarily.

It is also important to understand that no genetic test can eliminate every possible risk or guarantee the health of a future child. Results must therefore be interpreted carefully, with appropriate professional guidance and a clear understanding of what the screening can—and cannot—show.

At Pedieos IVF Center, we support an individualised and informed approach, taking into account each patient’s circumstances, medical history and treatment needs.

Read the full publication and Aphrodite Egg Bank’s position. →

READ RESEARCH REPORT

New Research on Vitrified Donor Egg Outcomes

Aphrodite Egg Bank, the in-house egg bank of Pedieos IVF Center, has published a new two-centre evaluation of clinical outcomes using vitrified donor oocytes.

The report follows two experienced fertility centres and examines how laboratory familiarity with the warming and handling of vitrified oocytes can influence post-thaw survival and treatment outcomes. The results show a clear learning curve: as the laboratory teams gained experience, oocyte survival improved and subsequently stabilised at consistently high levels.

Across the two centres, fertilisation rates reached 76.2% and 81%, while positive pregnancy rates following fresh embryo transfer were 56.7% and 58%. The findings demonstrate the importance of combining high-quality donor oocytes with trained embryologists, carefully controlled laboratory procedures and consistent monitoring.

For patients considering IVF with donor eggs, the report offers encouraging evidence about the effectiveness of modern oocyte vitrification. It also underlines why the experience of both the egg bank and the treating fertility centre remains an essential part of the treatment journey.

Read the full clinical research report →

READ RESEARCH REPORT

How Many Eggs Are Needed to Achieve One Blastocyst in IVF?

A common question in IVF is: “How many eggs are needed to obtain at least one blastocyst?” Understanding this requires knowing what blastocysts and MII oocytes are, as well as how age and other patient factors affect embryo development.

What Is a Blastocyst?

A blastocyst is an embryo that has reached the 5–6 day stage of development after fertilization. At this point, the embryo has differentiated into an outer layer of cells called the trophectoderm, which will form the placenta, and an inner cell mass that will develop into the fetus. Blastocysts are preferred for transfer because they have a higher implantation potential and better chances of leading to a successful pregnancy compared to earlier-stage embryos.

What Are MII Oocytes?

MII (Metaphase II) oocytes are mature eggs ready for fertilization. Only mature oocytes can develop into embryos, and their quality directly impacts the likelihood of reaching the blastocyst stage. In IVF, the number and quality of MII oocytes retrieved are critical factors in predicting success.

Insights from Research

This study analyzed over 2,600 IVF cycles that included preimplantation genetic testing for aneuploidy (PGT-A). The researchers created a predictive model to determine how many mature oocytes are required to obtain at least one euploid blastocyst. The model shows that:

  • Younger women generally require fewer MII oocytes.
  • Older women require more MII oocytes due to higher rates of chromosomal abnormalities.
Study 1: Predictive Model for Euploid Blastocysts (Fertility and Sterility, 2025)

Figure1: Graphic representation of the model. The x axis shows the number of MII oocytes and the y axis shows the probability of having at least one euploid blastocyst (pEB). Each line represents maternal age in years. Figure adjusted from Rodríguez-Varela et al., 2025.

This study provides a practical, individualized estimate for clinicians: by knowing a patient’s age and number of retrieved MII oocytes, the probability of achieving at least one euploid blastocyst can be predicted, which helps in planning IVF cycles more effectively.

Study 2: Age-Based Thresholds for MII Oocytes (World Scientific, 2025)

The second study established general thresholds for the number of MII oocytes needed to achieve at least one euploid blastocyst. Key findings include: – Women under 36 typically need around 6–7 MII oocytes. – Older women require progressively more eggs to reach a similar probability of success.

Figure 2: Estimated number of MII oocytes required to obtain at least on euploid blastocyst according to maternal age. Figure adjusted from Nakagawa et al., 2024.

Key Insight: These thresholds provide practical guidance to help patients understand their chances and plan IVF cycles. They also highlight that options such as donor eggs are always available when needed to improve the likelihood of success.

Additional Considerations

While age is a major determinant of how many MII oocytes are needed, other factors also play important roles. These include body mass index (BMI), ovarian reserve markers, lifestyle factors such as smoking or alcohol use, underlying medical conditions, and previous ovarian response to stimulation. All of these variables can influence egg quality and blastocyst formation, making individualized assessment essential for accurate predictions.

Overall Takeaways

  • For younger women, approximately 6–7 MII oocytes often yield at least one euploid blastocyst.
  • Older women may need 10 or more MII oocytes due to declining egg quality
  • The number of eggs required increases exponentially after the age of 40.
  • Predictive models and age-based thresholds help clinicians make data-driven decisions for IVF cycles, improving success rates and managing patient expectations.
  • Individual factors such as BMI, ovarian reserve, lifestyle, and medical history should also be considered when estimating the number of eggs required.
  • These models are designed to inform and guide patients, not to create stress or discouragement
  • Options like donor eggs remain available if needed.

References:
Nakagawa, K., Horikawa, T., Watanabe, H., Shirai, A., Kataoka, H., Takamizawa, S., Maruyama, T., Kuroda, K. and Sugiyama, R., 2025. Estimating the Number of Retrieved Oocytes Needed to Obtain at Least One Euploid Blastocyst. Fertility & Reproduction, 7(03), pp.122-128.
Rodríguez-Varela, C., Mascarós, J.M., Labarta, E., Silla, N. and Bosch, E., 2024. Minimum number of mature oocytes needed to obtain at least one euploid blastocyst according to female age in in vitro fertilization treatment cycles. Fertility and Sterility, 122(4), pp.658-666.

Does Freezing and Thawing Oocytes Affect Embryo Quality and IVF Success Rates?

If you are considering freezing your own eggs or using previously frozen oocytes for IVF, it’s normal to wonder whether freezing might reduce egg quality or affect your chances of success. Many patients imagine frozen eggs are somehow “weaker” than fresh ones. The truth is reassuring, with modern techniques, frozen eggs are just as capable as fresh ones, if they survive the thaw.

How Egg Freezing Works Today

Egg freezing has evolved dramatically over the last decade. At Pedieos IVF Centre, we use vitrification with Kitazato systems, a rapid-freezing method that prevents ice crystals from forming inside the egg.

Why is this important?

  • Older slow-freezing methods often allowed tiny ice crystals to form, which could damage delicate internal structures.
  • Vitrification cools eggs so quickly that they turn into a glass-like state, preserving their structure and function.

Think of it as putting your eggs on pause: their biological age and quality are frozen in time until they’re needed, giving you control over when to use them.

What Happens During Thawing

When vitrified eggs are warmed, the majority survive and retain their internal structures. A thawed egg is biologically very similar to a fresh one, and its potential for fertilisation remains intact.

Here’s what happens in the lab:

  • Most eggs survive the warming process
  • Cellular structures remain stable
  • The egg can be fertilised normally

From a laboratory perspective, a successfully thawed egg behaves just like a fresh egg. The freezing process itself does not reduce its ability to develop into a healthy embryo.

Fertilisation and Embryo Development

Once thawed, eggs are fertilised and develop into embryos in the same way as fresh eggs.

Research and clinical experience show that embryos from frozen–thawed eggs:

  • Fertilise normally
  • Progress through early developmental stages at expected rates
  • Reach the blastocyst stage
  • Can form good-quality embryos suitable for transfer or freezing

In other words, freezing does not prevent an egg from becoming a healthy embryo.

Factors That Influence IVF Success

While freezing itself does not harm eggs, IVF outcomes depend on factors present before freezing:

  • Age at freezing: Younger eggs are generally higher quality.
  • Egg quality at freezing: Reflects ovarian health at that time.
  • Embryo development: Not every egg will fertilise or develop, even when fresh.
  • Uterine receptivity: The environment where the embryo implants matters.

The most important point: it’s the age and quality of the egg at the time of freezing, not the freezing process, that determines future success. Freezing preserves eggs at that moment, effectively “pausing” their biological clock.

Why Freezing Eggs Can Be Empowering

Egg freezing is more than just a lab procedure, it’s a fertility preservation tool that offers women flexibility, control, and reassurance. Some choose it for medical reasons, such as before chemotherapy, radiation, or surgeries that could affect fertility. Preserving eggs beforehand gives these patients the chance to have children later, even if their natural fertility is impacted.

Others choose egg freezing for personal or lifestyle reasons, allowing them to plan family-building on their own timeline. It’s increasingly common for women in their late 20s or early 30s to preserve eggs proactively, before natural age-related decline begins.

In all cases, egg freezing helps women safeguard their fertility for the future, offering flexibility in timing, preservation of biologically younger eggs, and peace of mind that their options remain open.

Fun Fact

One of the longest-frozen human oocytes used to achieve a healthy pregnancy had been stored for over 14 years. This demonstrates how effective modern vitrification is, eggs can remain biologically “young” for many years until you’re ready to use them.

Key Takeaway

Freezing and thawing oocytes using modern vitrification techniques does not compromise embryo quality or IVF success. What matters most is the age and quality of the egg at the time it was frozen, not the freezing process itself.

At Pedieos IVF Centre, we use the latest vitrification technology to ensure that your eggs are preserved safely, giving you confidence and flexibility in your fertility journey.

AMH Explained: A Useful Clue, Not the Whole Fertility Story

AMH Explained

AMH (Anti-Müllerian Hormone) is one of the most talked-about fertility tests, and also one of the most misunderstood. Many patients receive a number without a clear explanation, which can cause unnecessary worry. Here’s what AMH really means, what it doesn’t, and why it’s only one piece of a much bigger fertility picture.

What AMH Is and What It Is Not

AMH is a hormone produced by the small follicles in your ovaries. It reflects ovarian reserve, meaning the number of developing eggs that remain. Higher AMH levels are generally associated with a greater number of eggs that may be retrieved in an IVF cycle.

However, AMH is not:

  • A measure of egg quality
  • A direct predictor of pregnancy
  • A test that can tell you whether IVF will work or not

In other words, AMH tells you about quantity, not quality. Fertility outcomes like embryo development, implantation, and pregnancy depend on many other factors, including egg age, sperm quality, and uterine environment.

Why AMH Results Can Look Different

You may notice one lab reports an AMH of 5 and another says 35, even if the test was done around the same time. This is usually because:

  • AMH can be reported in different units (ng/mL vs pmol/L)
  • Different labs use different assays and reference ranges

For example, 5 pmol/L is not the same as 5 ng/mL. This is why your results should always be interpreted by your fertility specialist, ideally using the same lab for consistency.

Age: The Strongest Predictor of Egg Quality

Doctors often say age is the strongest predictor of fertility. This means that egg quality declines with age, regardless of AMH level.

  • You can have a high AMH but lower egg quality if you are older
  • You can have a low AMH but very good egg quality if you are younger

This explains why two people with the same AMH can have very different IVF outcomes. AMH predicts how many eggs you may have, while age affects their genetic health.

Why Knowing Your AMH Can Be Helpful

Even with its limitations, AMH is useful for guiding fertility treatment. Knowing your AMH can help:

  • Predict how your ovaries may respond to stimulation in IVF
  • Guide medication choice and dosage
  • Reduce the risk of over- or under-stimulation
  • Support planning for fertility preservation or treatment timing

In short, AMH helps personalise your treatment, but it does not predict your chance of pregnancy.

How AMH Is Tested

AMH is measured with a simple blood test:

  • You do not need to fast
  • It can be taken on any day of your cycle
  • The test is quick and straightforward

This makes AMH one of the easiest fertility hormones to assess.

Factors That Can Affect AMH Results

AMH levels can be influenced by:

  • Hormonal contraception
  • Polycystic ovary syndrome (PCOS)
  • Recent ovarian surgery
  • Laboratory variability
  • Natural biological variation

Because of this, AMH should never be interpreted alone.

Can You Increase Your AMH?

Currently, there is no proven way to significantly raise AMH. Lifestyle changes, supplements, or medications may support general reproductive health, but they do not reliably increase ovarian reserve. AMH naturally declines with age, which is why early assessment and careful planning are important.

Fun Fact: Men Have AMH Too

AMH was first discovered in men. During fetal development, it prevents the formation of female reproductive structures. In adult men, AMH is produced by the testes and sometimes used in paediatric or endocrine assessments, but it has no role in male fertility planning like it does in women.

AMH Is Part of a Bigger Picture

AMH is just one piece of information, not the full story. Fertility assessment works best when AMH is considered alongside:

  • Age
  • Antral follicle count (AFC)
  • Other hormone levels (e.g., FSH, estradiol)
  • Medical history and individual goals

At Pedieos IVF Centre, AMH is used as a guide to personalise care, not as a label or limitation.

Key Takeaway

AMH helps us understand ovarian reserve and plan treatment, but it does not define fertility or predict pregnancy. Your fertility potential is always more than a single number.

Recurrent Implantation Failure: Causes & Advanced Treatment Options

recurrent implantation failure in IVF

Recurrent implantation failure is one of the most emotionally exhausting experiences in fertility treatment. After multiple IVF cycles, good-quality embryos, and careful medical supervision, the absence of implantation can feel both confusing and devastating.

Yet implantation is not a simple event. It is a highly coordinated biological dialogue between embryo and endometrium. When that dialogue fails repeatedly, it signals that something deeper requires investigation.

Understanding the underlying mechanisms behind recurrent implantation failure allows us to move beyond repeated IVF failure and toward personalized, evidence-based solutions.

woman concerned due to failed ivf

What Is Recurrent Implantation Failure?

There is no single universal definition, but recurrent implantation failure (RIF) is commonly described as the failure to achieve pregnancy after transferring good-quality embryos across multiple IVF cycles — typically two to three transfers.

Importantly, implantation failure is not always caused by poor embryos. Many patients with RIF have excellent blastocysts. The issue often lies in the interaction between embryo and uterus rather than embryo quality alone.

Implantation depends on precise timing, hormonal synchronization, immune tolerance, and adequate endometrial development. A disturbance in any of these systems may lead to repeated IVF failure.

doctor support

Why Implantation Is So Biologically Complex

Implantation occurs during a narrow time window known as the “window of implantation.” During this period, the uterine lining becomes temporarily receptive, expressing specific molecules that allow embryo attachment.

At the same time, the embryo must be chromosomally normal and capable of signaling its presence. The immune system must tolerate the embryo rather than recognize it as foreign. Blood flow to the uterus must be sufficient to sustain early placental development.

When recurrent implantation failure occurs, we are often observing disruption in one — or several — of these coordinated processes.

the root cause of recurrent implantation failure

The Main Causes of Recurrent Implantation Failure

Rather than a single defect, RIF is usually multifactorial. Below are the most clinically significant contributors.

Embryo Genetic Abnormalities

Even visually “perfect” embryos may carry chromosomal errors. As maternal age increases, the rate of aneuploidy rises significantly. These chromosomal abnormalities frequently prevent implantation altogether, rather than causing miscarriage.

This explains why patients may experience repeated IVF failure despite high-grade embryos.

Preimplantation Genetic Testing (PGT-A) can identify chromosomally normal embryos before transfer. While it does not solve uterine-related causes, it reduces embryo-related implantation failure and can shorten time to pregnancy in selected patients.

Thin Endometrial Lining (Thin Lining IVF)

One of the most challenging implantation failure causes is inadequate endometrial development.

For successful implantation, the endometrium must not only reach sufficient thickness — typically above 7 mm — but also develop proper structure, blood flow, and hormonal responsiveness.

In thin lining IVF cases, even if embryos are genetically normal, the uterine environment may not be biologically prepared to support implantation.

Thin endometrium may result from previous uterine surgeries, infections, aggressive curettage procedures, hormonal resistance, or impaired uterine blood flow. Sometimes the cause is unclear.

Management requires individualized adjustment of estrogen protocols, evaluation for chronic inflammation, and in selected cases, regenerative approaches such as platelet-rich plasma (PRP) therapy. Improving uterine perfusion and correcting underlying pathology often significantly enhances implantation potential.

Uterine Structural Abnormalities

The physical environment of the uterus must allow uninterrupted embryo attachment. Even small structural irregularities can interfere with this delicate process.

Submucosal fibroids, uterine polyps, adhesions (Asherman’s syndrome), septa, or adenomyosis may disrupt the architecture of the endometrial cavity.

Many of these abnormalities are subtle and may not be visible on basic ultrasound. Advanced imaging techniques or diagnostic hysteroscopy are often necessary in patients with recurrent implantation failure.

When structural problems are corrected surgically, implantation rates frequently improve — particularly in younger patients with otherwise good prognosis.

Chronic Endometritis: The Silent Disruptor

Chronic endometritis is a low-grade inflammatory condition of the uterine lining that often presents without symptoms. It does not typically cause pain or abnormal bleeding, making it easy to overlook.

However, persistent inflammation alters endometrial receptivity and may significantly contribute to repeated IVF failure.

Diagnosis requires endometrial biopsy and immunohistochemical testing (such as CD138 staining). When identified, targeted antibiotic therapy can restore normal uterine conditions and improve implantation outcomes.

In many RIF cases, this treatable condition is only discovered after specialized evaluation.

Immune and Inflammatory Factors

Implantation requires immune tolerance. The embryo carries genetic material from both parents, meaning the maternal immune system must adapt rather than reject it.

In some women, abnormal immune activation — including elevated natural killer (NK) cell activity or autoimmune disorders — may interfere with implantation.

The role of immune testing in recurrent implantation failure remains debated, but in selected patients with autoimmune history or unexplained repeated IVF failure, immune modulation strategies may be considered.

These can include low-dose aspirin, heparin, corticosteroids, or intralipid therapy. Such interventions should always be individualized and carefully supervised.

Hormonal Timing and the Window of Implantation

Even when embryos are chromosomally normal and the uterus appears structurally normal, implantation can fail if hormonal synchronization is slightly misaligned.

Progesterone exposure must occur for a precise duration before embryo transfer. In some women, the window of implantation is displaced, meaning the embryo is transferred either too early or too late.

Endometrial Receptivity Analysis (ERA) aims to identify this personalized window. Although not necessary for all IVF patients, it may provide clarity in cases of unexplained recurrent implantation failure.

IVF lab

Advanced Treatment Approaches

The management of recurrent implantation failure has evolved significantly over the past decade. Instead of repeating identical IVF protocols, modern reproductive medicine focuses on personalization.

This may involve:

  • Genetic testing of embryos (PGT-A)
  • Adjusted hormonal preparation protocols
  • Investigation and treatment of thin lining IVF cases
  • Hysteroscopic correction of structural issues
  • Targeted treatment of chronic endometritis
  • Personalized embryo transfer timing

The goal is not simply to try again — but to try differently, guided by investigation.

doctor holding hand

Emotional and Clinical Perspective

Repeated IVF failure is not only a medical condition; it is a profound emotional burden. Patients often question their bodies, their decisions, and their chances of success.

However, recurrent implantation failure does not mean pregnancy is impossible. It means deeper evaluation is necessary.

With systematic investigation and individualized care, many patients who initially experienced repeated IVF failure ultimately achieve successful pregnancies.

Coupole speaking to a doctor about recurrent implantation failure

When to Seek Specialized Evaluation

A thorough recurrent implantation failure assessment should be considered after:

  • Two or more failed transfers of high-quality embryos
  • Persistent thin lining IVF cycles
  • Unexplained implantation failure despite good prognosis
  • Repeated biochemical pregnancies

Early investigation prevents repeated unsuccessful cycles and helps shift from trial-and-error to targeted treatment.

Final Thoughts

Recurrent implantation failure is complex and multifactorial. It rarely has a single cause and almost never benefits from repeating the same protocol without investigation.

Whether the issue lies in embryo genetics, thin endometrial lining, subtle inflammation, structural abnormalities, or timing discrepancies, modern fertility medicine offers advanced diagnostic tools and personalized therapeutic strategies.

Repeated IVF failure is not the end of the journey — it is an indication to look deeper, refine the approach, and move forward with clarity.

IVF After 40: What Really Improves Success Rates?

IVF after 40 success

Many women today begin or expand their families later in life. While pregnancy after 40 is absolutely possible, fertility naturally declines with age, and this directly affects IVF after 40 success rates.

However, age alone does not tell the full story. The outcome of IVF over 40 depends on several biological factors, treatment strategies, and individualized medical decisions.

In this guide, we explore what truly influences IVF success after 40 — and what can meaningfully improve your chances.

Fertility when over 40

Why Fertility Declines After 40

Female fertility declines gradually in the 30s and more significantly after 40. The main reason is not simply the number of eggs remaining, but their quality.

As women age:

  • The number of eggs decreases (lower ovarian reserve)
  • The proportion of genetically normal eggs declines
  • The risk of chromosomal abnormalities increases

This change in egg quality explains why miscarriage rates also rise after 40.

When discussing IVF over 40, it is important to understand that IVF cannot reverse biological aging. What it can do is optimize the conditions under which fertilization and embryo development occur.

IVF success rates over 40

What Are Realistic IVF Success Rates After 40?

Success rates vary depending on several factors, including whether a woman uses her own eggs or donor eggs.

With a woman’s own eggs:

  • IVF at 40 may still be reasonable depending on ovarian reserve
  • IVF at 42 typically shows lower implantation rates
  • Pregnancy at 43 IVF is possible, but the chances decrease significantly

The main limiting factor is embryo chromosomal normality. As maternal age increases, the percentage of embryos that are chromosomally normal declines.

That said, statistics reflect population averages. Individual outcomes can differ significantly depending on overall reproductive health.

The Most Important Factors That Influence IVF After 40

1. Egg Quality

Egg quality is the single most influential factor in IVF after 40 success rates.

Even when multiple eggs are retrieved, not all will develop into viable embryos. The proportion of genetically normal embryos decreases with age, which affects implantation and live birth rates.

Testing embryo chromosomal health through preimplantation genetic testing (PGT) can help identify embryos with normal chromosomal patterns, potentially improving implantation success.

2. Ovarian Reserve

Ovarian reserve refers to the number of eggs remaining in the ovaries. This is commonly assessed using:

  • AMH (anti-Müllerian hormone)
  • Antral follicle count via ultrasound

A woman aged 41 with good ovarian reserve may respond better to stimulation than a woman aged 38 with very low reserve.

Age is important, but ovarian biology varies between individuals.

3. Embryo Selection and Laboratory Quality

Advanced embryology techniques can influence outcomes.

Modern IVF laboratories may use:

  • Time-lapse embryo monitoring
  • Optimized culture environments
  • Genetic testing for chromosomal abnormalities

These technologies do not change egg age but can improve embryo selection precision.

4. Uterine Health

Implantation depends not only on the embryo but also on the uterine environment.

Conditions that may affect implantation include:

  • Fibroids
  • Polyps
  • Adenomyosis
  • Thin endometrium

Proper uterine evaluation is especially important in IVF at 42 or older, when each embryo transfer carries increased significance.

5. Lifestyle and Metabolic Health

While lifestyle cannot reverse age-related egg decline, overall metabolic health still plays a role.

Optimizing:

  • Body weight
  • Thyroid function
  • Vitamin D levels
  • Blood sugar balance

can support better hormonal regulation and implantation conditions.

Couple consulting a doctor

IVF at 42 or 43: Is It Still Worth Trying?

This is one of the most common and emotional questions patients ask.

Pregnancy at 43 IVF using one’s own eggs is possible, but success rates are typically lower compared to younger age groups.

Some women may choose to attempt IVF with their own eggs first. Others may consider donor egg IVF, which significantly increases success rates because egg quality reflects the donor’s age rather than the recipient’s age.

The right decision depends on:

  • Ovarian reserve
  • Personal preferences
  • Emotional readiness
  • Medical evaluation

Individual counseling is essential in this age group.

Does PGT Improve IVF Success After 40?

Preimplantation genetic testing (PGT-A) screens embryos for chromosomal abnormalities before transfer.

Because chromosomal abnormalities increase after 40, PGT can:

  • Reduce miscarriage risk
  • Improve selection of viable embryos
  • Avoid transferring embryos unlikely to implant

However, PGT does not increase the number of normal embryos — it helps identify them.

Its usefulness depends on how many embryos are available for testing.

IVF with Egg Donor

When Should Donor Eggs Be Considered?

For women with:

  • Very low ovarian reserve
  • Repeated IVF failure
  • Recurrent chromosomal abnormalities

Donor egg IVF may offer significantly higher success rates.

This is because embryo quality reflects the donor’s age, not the recipient’s age.

For some women, donor IVF provides a more predictable path to pregnancy after 42 or 43.

Emotional Considerations After 40

Fertility treatment after 40 is often emotionally complex.

Women may feel:

  • Time pressure
  • Anxiety about declining success
  • Confusion about treatment choices

Clear medical guidance and realistic counseling are crucial. Success is not determined by age alone, but by careful evaluation and individualized planning.

Key Takeaways

  • IVF after 40 success rates depend primarily on egg quality.
  • Ovarian reserve and embryo genetics strongly influence outcomes.
  • IVF at 42 or 43 is possible, but success varies significantly.
  • PGT may improve embryo selection.
  • Donor egg IVF can substantially increase pregnancy rates when appropriate.

Age is a factor — but it is not the only factor. With thorough evaluation and tailored treatment strategies, many women over 40 achieve successful pregnancies.

Low Luteinizing Hormone: Causes, Symptoms & Fertility Treatment Options

low luteinizing hormone in women

Luteinizing hormone (LH) plays a central role in female fertility. While much attention is often given to high LH levels, low luteinizing hormone can be equally significant — especially for women trying to conceive.

If LH levels are too low, ovulation may not occur properly, menstrual cycles may become irregular, and pregnancy can become more difficult. Understanding why LH levels drop, what symptoms to watch for, and how the condition is treated can help restore hormonal balance and improve reproductive outcomes.

What Does Luteinizing Hormone Do?

LH is produced by the pituitary gland in the brain and works in close coordination with follicle-stimulating hormone (FSH). Together, these hormones regulate the menstrual cycle and prepare the ovaries for ovulation.

In a healthy cycle, LH rises sharply just before ovulation. This rise — known as the LH surge — signals the ovary to release a mature egg.

When luteinizing hormone is low, this signal may be weak or absent. Without sufficient LH stimulation:

  • The dominant follicle may not fully mature
  • Ovulation may not occur
  • Progesterone production after ovulation may be inadequate

Over time, this hormonal imbalance can affect both cycle regularity and implantation potential.

low luteinizing hormone testing methods

What Is Considered Low LH?

LH levels naturally fluctuate throughout the menstrual cycle. Therefore, interpretation depends on timing.

Generally:

  • During the early follicular phase, LH levels are relatively low
  • Before ovulation, LH rises significantly
  • After ovulation, LH declines again

A diagnosis of low LH levels in females is not based on one isolated result. Instead, doctors assess patterns across the cycle and evaluate LH in combination with other hormones such as FSH, estradiol, AMH, and progesterone.

Persistently low LH, particularly when accompanied by irregular ovulation, may indicate a deeper regulatory issue between the brain and ovaries.

what causes low luteinizing hormone

Causes of Low Luteinizing Hormone

Low LH is often related to a disruption in the communication between the hypothalamus, pituitary gland, and ovaries — known as the hypothalamic-pituitary-ovarian axis.

Common causes include:

1. Hypothalamic Dysfunction

The hypothalamus controls LH release. Excessive stress, extreme weight loss, intense exercise, or chronic illness can suppress hypothalamic signaling. This condition is sometimes referred to as functional hypothalamic amenorrhea.

2. Pituitary Disorders

In rare cases, structural or functional problems within the pituitary gland can reduce LH production.

3. Excessive Physical or Emotional Stress

Chronic stress elevates cortisol levels, which can interfere with reproductive hormones and reduce LH secretion.

4. Very Low Body Weight

Insufficient body fat can disrupt hormonal signaling, leading to reduced LH and anovulation.

5. Certain Medications

Some hormonal treatments or medications may temporarily suppress LH production.

Identifying the underlying cause is essential, as treatment depends on the source of suppression.

diagnostic of low luteinizing hormone

Symptoms of Low LH Levels

Low LH levels often present subtly. Many women first notice changes in their menstrual pattern.

Common symptoms may include:

  • Irregular or absent periods
  • Delayed ovulation
  • Light menstrual bleeding
  • Difficulty conceiving
  • Low progesterone after ovulation

In some cases, ovulation may not occur at all, even if menstruation appears regular.

Because symptoms can overlap with other hormonal conditions, laboratory evaluation is necessary to confirm the diagnosis.

ICSI procedure used for globozoospermia IVF fertilization at Pedieos IVF Center

How Low LH Affects Fertility

Ovulation depends on a precise hormonal sequence. When LH remains too low:

  • The follicle may fail to rupture
  • The egg may not be released
  • The luteal phase may be shortened

Without ovulation, natural conception cannot occur. Even if ovulation happens sporadically, inconsistent LH patterns may reduce predictability and shorten the fertile window.

For women undergoing fertility treatment, low LH levels may also affect ovarian response during stimulation protocols, requiring careful monitoring.

How Is Low LH Diagnosed?

Diagnosis typically involves:

  • Blood testing at specific cycle days
  • Evaluation of FSH and estradiol levels
  • Assessment of ovulation through progesterone testing
  • Ultrasound monitoring of follicle development

Doctors often interpret LH values in context. A single “low” number does not necessarily indicate pathology. What matters is whether LH levels are sufficient to trigger ovulation consistently.

Treatment Options for Low Luteinizing Hormone

Treatment focuses on restoring hormonal balance and encouraging predictable ovulation.

Approaches may include:

Lifestyle Adjustments

For women with stress-related or weight-related suppression, restoring nutritional balance and reducing stress can normalize LH production naturally.

Ovulation Induction Medication

Medications may be prescribed to stimulate follicle development and trigger ovulation when LH levels are inadequate.

Hormonal Therapy

In certain cases, targeted hormonal support may be used to regulate the cycle.

Individualized Fertility Treatment

If conception does not occur despite corrected LH levels, assisted reproductive techniques such as IUI or IVF may be considered.

Management is highly individualized and depends on age, ovarian reserve, and overall reproductive health.

When Should You Seek Evaluation?

You should consider consulting a fertility specialist if:

  • Your cycles are consistently irregular
  • You do not detect ovulation
  • You have been trying to conceive for 6–12 months without success
  • You have a history of hormonal imbalance

Early assessment can clarify whether low LH is contributing to fertility challenges and allow for timely intervention.

Key Takeaways

Low luteinizing hormone can quietly interfere with ovulation and fertility. While it may not always cause dramatic symptoms, persistent suppression can disrupt the delicate hormonal balance required for pregnancy.

The good news is that most causes of low LH are manageable once identified. With proper evaluation and individualized care, ovulation can often be restored and fertility outcomes improved.

LH Surge Timing: How to Detect It & Maximize Pregnancy Chances

LH Surge Timing

Understanding your LH surge is one of the most powerful tools for improving pregnancy timing — whether you are trying to conceive naturally or undergoing fertility treatment.

Many couples focus only on “ovulation day,” but in reality, the key window occurs before ovulation, when luteinizing hormone rises sharply. Recognizing this hormonal shift allows for precise timing and can significantly increase the chances of conception.

In this guide, we explain what the LH surge is, how it connects to ovulation, how to detect it accurately, and when to seek medical guidance.

what is LH Surge

What Is the LH Surge?

LH (luteinizing hormone) is produced by the pituitary gland in the brain and plays a central role in regulating the menstrual cycle.

For most of the cycle, LH levels remain relatively low. However, just before ovulation, the brain releases a rapid and dramatic increase in LH — this is known as the LH surge.

This surge is not random. It is the biological trigger that causes the ovary to release a mature egg.

Without an LH surge:

  • Ovulation does not occur
  • No egg is released
  • Natural conception is not possible

This is why tracking LH surge and ovulation together is far more reliable than simply counting cycle days.

when does lh surge happen

When Does the LH Surge Happen?

In a textbook 28-day cycle, ovulation is often described as occurring on day 14. However, real-life cycles vary significantly.

The LH surge typically:

  • Occurs 24–36 hours before ovulation
  • Happens after estrogen levels reach their peak
  • Can vary depending on cycle length

For example:

  • In a 32-day cycle, ovulation may occur closer to day 18
  • In a 24-day cycle, ovulation may occur around day 10

This variation explains why calendar-based predictions are often inaccurate.

Monitoring LH levels during ovulation provides a personalized, biologically accurate method of determining fertility timing.

LH surge time

How Long Does the LH Surge Last?

The LH surge is relatively brief, which is why timing is critical.

Generally:

  • The surge may last between 12 and 48 hours
  • Ovulation usually occurs within 24–36 hours after the surge begins
  • The most fertile window is the day of the surge and the following day

Because it is short-lived, some women may miss detecting it if testing is inconsistent or done only once daily.

This is especially important for women with:

  • Short cycles
  • Irregular cycles
  • Rapid hormonal fluctuations

In such cases, twice-daily testing may improve detection accuracy.

what happens with your body in lh surge

LH Surge and Ovulation: What Happens in the Body?

To understand the relationship between LH surge and ovulation, it helps to look at the hormonal sequence.

During the first half of the cycle:

  • Follicle-stimulating hormone (FSH) stimulates follicles in the ovary.
  • One follicle becomes dominant.
  • Estrogen levels rise as the follicle matures.

When estrogen reaches a critical threshold, the brain responds by releasing a surge of LH.

This LH surge:

  • Weakens the follicle wall
  • Triggers enzymatic changes
  • Causes the egg to be released from the ovary
  • Ovulation then follows approximately one day later.

This is why detecting the LH level during ovulation is essential in fertility planning.

lh surge testing methods

How to Detect the LH Surge

There are several reliable methods to identify the LH surge, each with different levels of precision.

1. Ovulation Predictor Kits (OPKs)

Ovulation predictor kits measure LH in urine and are widely available for home use. They are:

  • Convenient
  • Non-invasive
  • Affordable

For best results:

  • Begin testing a few days before expected ovulation
  • Test at the same time daily
  • Avoid excessive fluid intake before testing

A positive result indicates that ovulation is likely within the next 24–36 hours.

However, women with PCOS may experience persistently elevated LH, which can make interpretation more complex.

2. Blood Hormone Testing

In clinical settings, blood tests provide a more precise measurement of LH levels.

This method is particularly useful when:

  • Cycles are irregular
  • Ovulation is unclear
  • Fertility treatment is being monitored

Blood testing can confirm the exact hormonal rise and help optimize timing for intrauterine insemination (IUI) or IVF cycles.

3. Ultrasound Monitoring

In fertility treatment, LH monitoring is often combined with ultrasound scans.

Ultrasound allows doctors to:

  • Measure follicle size
  • Confirm follicle maturity
  • Predict ovulation timing

This combined approach is especially important in IVF, where premature LH surge can affect egg retrieval timing.

What Is a Normal LH Level During Ovulation?

LH levels fluctuate throughout the cycle:

  • Early cycle: relatively low
  • Just before ovulation: rapid increase
  • After ovulation: decline

The exact numeric values vary between laboratories. What matters most is the pattern of rise, not just a single number.

If ovulation is not occurring regularly or pregnancy is delayed, evaluating LH patterns alongside other hormones such as FSH, AMH, and progesterone may provide deeper insight.

What If There Is No LH Surge?

Some women may experience cycles without a detectable LH surge.

Possible causes include:

  • Polycystic ovary syndrome (PCOS)
  • Thyroid dysfunction
  • Stress-related hormonal disruption
  • Low body weight
  • Perimenopause
  • Hypothalamic dysfunction

In these cases, ovulation induction medication may help regulate hormonal signaling and restore predictable ovulation.

Persistent absence of an LH surge warrants further evaluation.

LH Surge in IVF and Fertility Treatment

In assisted reproduction, LH is carefully controlled.

For example:

  • In IVF cycles, medications are often used to prevent premature LH surge.
  • A trigger injection may be administered to mimic the natural surge at the ideal time.
  • In natural or modified cycles, spontaneous LH surge may be used to time procedures precisely.

Proper LH control ensures optimal egg maturity and improves treatment efficiency.

doctor consultation lh surge

When Should You Seek Medical Advice?

Consider consulting a fertility specialist if:

  • You cannot consistently detect ovulation
  • Your cycles are highly irregular
  • You have been trying to conceive for 12 months (or 6 months if over 35)
  • You have known hormonal or metabolic conditions

Early assessment can identify subtle ovulatory disorders that are not obvious through home testing alone.

Key Takeaways

  • The LH surge is the hormonal trigger for ovulation.
  • It usually occurs 24–36 hours before the egg is released.
  • Detecting LH levels during ovulation helps optimize pregnancy timing.
  • A weak or absent surge may signal underlying hormonal imbalance.
  • In IVF cycles, LH timing is precisely managed to improve outcomes.

Understanding your LH surge provides clarity, precision, and confidence — whether you are trying naturally or exploring fertility treatment options.