Fertility issues faced by women are more prevalent than most people think. In nearly all cases, the cause is identifiable. The initial step of understanding the medical conditions contributing to infertility is important for women to receive help. The good news is that most of these conditions are treatable, and with the right support, many women can manage them and conceive successfully. This article identifies eight medical conditions that will be most important to women who are experiencing infertility, ranging from recognised medical conditions like PCOS to some conditions that have been recently studied, like endometriosis and uterine fibroids. Whether you are trying to conceive or you want to gain a better understanding of your reproductive health, the article will provide the clearest description of what these conditions are and how they influence infertility.
Polycystic Ovary Syndrome (PCOS)
Definition: PCOS is a common hormonal disorder affecting women of reproductive age, characterised by imbalanced hormones, enlarged ovaries with small cysts, irregular menstruation, and elevated androgen levels.
Symptoms: You may notice irregular or absent periods, excessive facial and body hair, acne, hair thinning on the scalp, and unexpected weight gain, all due to excess androgens and insulin resistance.
Causes: The exact cause is not fully understood but involves genetic and environmental factors, with insulin resistance and hormonal imbalance playing a central role.
Impact on Fertility: PCOS is one of the leading causes of female infertility globally because it interferes with ovulation due to the hormonal imbalance that prevents natural conception.
Treatment: Management includes lifestyle changes to improve insulin sensitivity, ovulation-inducing medications such as letrozole or clomiphene citrate, and IVF where needed.
Endometriosis
Definition: Endometriosis is a chronic condition in which tissue similar to the uterine lining (endometrium) grows outside the uterus. This tissue can attach to the ovaries, fallopian tubes, and other pelvic structures, causing pain, inflammation, and adhesions.
Symptoms: Painful periods, pelvic pain, pain during sex, and difficulty conceiving are the most common signs. Some women have no symptoms. This is why diagnosis is often delayed.
Causes: The exact cause remains uncertain; retrograde menstruation and immune system dysfunction are among the most widely considered theories.
Impact on Fertility: Endometriosis affects fertility by leaving scars, causing pelvic inflammation, and creating adhesions that impair the ovaries and fallopian tubes, hindering ovulation, fertilisation, and implantation.
Treatment: Treatment includes surgical removal of endometrial implants, hormonal therapies to manage symptoms, and IVF where natural conception is not possible.
Uterine fibroids
Definition: Uterine fibroids are noncancerous growths of the uterus that most commonly appear during childbearing years.
Symptoms: Long or heavy periods, pelvic pressure, frequent urination, and fullness in the abdomen are said to be common symptoms in many women with fibroids; some women experience no symptoms at all.
Causes: The exact cause of uterine fibroids is unclear but is believed to involve genetic and hormonal factors.
Impact on Fertility: Fibroids are among the most common disorders in women’s reproductive health. Depending on their size and location, they may block the fallopian tubes, change the endometrium’s morphology, and prevent implantation.
Treatment: Options range from medication to surgical removal, depending on the fibroid’s size and location.
Blocked Fallopian Tubes
Definition: Blocked fallopian tubes refer to obstruction or scarring of the tubes that prevents the egg from meeting sperm for fertilisation.
Symptoms: Commonly, there are no symptoms; blocked tubes are usually diagnosed during fertility assessments, commonly using the HSG (hysterosalpingography) method.
Causes: Common causes include pelvic inflammatory disease, endometriosis, and prior pelvic surgery or infection.
Impact on Fertility: Blocked fallopian tubes prevent fertilisation and the embryo’s passage into the uterus, making natural conception impossible when both tubes are affected.
Treatment: Surgical repair may be an option, depending on how badly the tubes are damaged; when that isn’t possible, IVF can bypass the tubes and remains a highly effective alternative.
Ovulatory Disorders
Definition: Ovulatory disorders are conditions where the ovaries fail to release eggs regularly, resulting in irregular or absent menstrual cycles.
Symptoms: Cycles that are consistently less than 21 days, more than 35 days, or missing altogether are the most obvious signs; however, some women experience irregular ovulation without noticing major cycle changes.
Causes: Hormonal imbalances, stress, significant weight changes, thyroid dysfunction, and elevated prolactin levels are all recognised causes.
Impact on Fertility: Ovulatory disorders are also considered common reasons for infertility in women. If women do not ovulate regularly, it will be very difficult for them to conceive naturally without any medical assistance.
Treatment: Ovulation-inducing medications, including letrozole and clomiphene citrate, along with lifestyle modifications, are the most commonly used first-line treatments.
Premature Ovarian Insufficiency (POI)
Definition: POI occurs when the ovaries stop functioning normally before the age of 40, previously referred to as premature ovarian failure.
Symptoms: The presence of abnormal or missing periods before age 40, along with various symptoms such as hot flashes, night sweats, vaginal dryness, and mood changes, is a clear indication and should always be investigated promptly.
Causes: POI can result from genetic factors, autoimmune disease, chemotherapy, radiation therapy, or unknown causes.
Impact on Fertility: POI reduces fertility by depleting the ovarian egg supply earlier than it would naturally, and its effects on women’s reproductive health extend beyond fertility to include bone mass density and increased cardiovascular risk.
Treatment: Hormone replacement therapy alleviates symptoms, though fertility options are limited. Egg donation is often the most effective pathway to pregnancy for women with POI.
Thyroid Disorders
Definition: Thyroid disorders, including hypothyroidism (underactive thyroid) and hyperthyroidism (overactive thyroid), affect the thyroid gland’s hormone production.
Symptoms: Common symptoms include fatigue, unexplained weight changes, hair loss, irregular periods, and low mood. Because these symptoms overlap closely with other hormonal conditions, thyroid disorders are often missed.
Causes: Autoimmune conditions, iodine deficiency, and genetic factors are the most commonly identified causes.
Impact on Fertility: Thyroid dysfunction is one of the fertility-affecting health conditions that is most often ignored; even a slight rise in TSH levels can interfere with ovulation and decrease the chances of implantation, which is why thyroid screening should form a standard part of any fertility evaluation.
Treatment: Treatment involves managing thyroid hormone levels with medication; once stabilised, menstrual regularity and fertility often improve significantly.
Pelvic Inflammatory Disease (PID)
Definition: PID is an infection of the female reproductive organs, usually caused by sexually transmitted bacteria.
Symptoms: The most common signs are lower abdominal pain, fever, pain when urinating, and vaginal discharge; although in some cases women have no symptoms and thus the damage can take place without being noticed.
Causes: PID is typically caused by untreated sexually transmitted infections like chlamydia and gonorrhoea.
Impact on Fertility: PID causes scarring and damage to the fallopian tubes, increasing the risk of ectopic pregnancy and infertility.
Treatment: Prompt antibiotic treatment is essential to prevent long-term damage; in cases of severe structural damage, surgery may be required to restore reproductive function.
Conclusion
Most fertility problems in women have an explanation, and with the right investigation, you can usually find a clear answer and a way forward. If you already have a diagnosis or are just noticing changes that seem unusual, learning about the conditions that affect female fertility helps you take control. Getting assessed early, choosing the right tests, and working with a specialist can really improve your chances. You also don’t have to wait until things feel urgent to ask for help.
Frequently Asked Questions
References;
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- Carneiro, M. M. (2025). Benign gynecological diseases and women’s health burden: Time to remove the invisibility cloak. Women & Health, 65(7), 555–558. https://doi.org/10.1080/03630242.2025.2557044
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Anna Haotanto is the Founder of Zora Health and a passionate advocate for women’s empowerment. Anna’s personal experiences with egg-freezing, PCOS, perimenopause and the challenges of fertility have fueled her mission to provide high-quality information, financing, and support to help women and couples navigate their fertility journeys with confidence. She is also recognised for her achievements in finance, entrepreneurship, and women’s empowerment, and has been featured in various media outlets. You can also follow her on Linkedin or Instagram.
