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Uterine Fibroids

Types, symptoms, and treatment options

16 min readUpdated April 1, 2026v9 · 30 sources

At a Glance

Uterine fibroids are common, non-cancerous growths in your uterus. Many women have them without symptoms, but some experience heavy periods, pain, or difficulty getting pregnant. Treatment is personalized to you, considering your symptoms and future plans. Options range from medications to procedures that can remove the fibroids or the uterus. If you have concerning symptoms like heavy bleeding, pelvic pain, or fertility concerns, it's important to talk to your doctor. They can help you understand your options and find the best way to manage your fibroids.

Overview

Overview of Uterine Fibroids

Uterine fibroids, also known as leiomyomas, are the most common benign (non-cancerous) tumors originating from the smooth muscle cells of the uterus [3, 6, 15]. These growths are highly prevalent, affecting a significant portion of women during their reproductive years. Approximately 30% of women will have fibroids during their reproductive lifespan [8], with prevalence increasing to over 60% in individuals aged 30-44 years [13]. The incidence of fibroids rises as women enter their third and fourth decades of life [10]. While extremely rare in adolescence, accounting for less than 1% of cases [7], fibroids are observed to have a higher prevalence in African-American women [10, 15].

Although many women with uterine fibroids remain asymptomatic and may have them discovered incidentally [13], approximately 30% experience symptoms that can significantly impact their quality of life [13]. Key characteristics include abnormal uterine bleeding (AUB), often manifesting as heavy menstrual bleeding (HMB), which can lead to iron deficiency and anemia [10, 11, 13]. Other common symptoms include bulk-related symptoms, such as pelvic pressure or pain due to the fibroids pressing on adjacent organs [3, 10, 11]. Uterine fibroids can also be a factor in infertility and pregnancy loss [3, 10, 12, 14].

The significant burden of uterine fibroids on women's health and healthcare systems underscores the importance of understanding their clinical presentation and management [15]. Given the diverse range of symptoms and the potential impact on reproductive health, various treatment options exist, from medical therapies to minimally invasive procedures and surgical interventions like myomectomy or hysterectomy [3, 5, 6, 11, 15]. This article aims to provide an evidence-based understanding of these aspects, setting the context for detailed discussions on diagnosis, symptoms, and the comprehensive array of available treatment approaches.

Causes & Risk Factors

Causes and Risk Factors

Uterine fibroids, also known as leiomyomas, are the most common benign tumors that develop from the smooth muscle cells of the uterus (myometrium) [6, 15]. While the exact cause is not fully understood, their development and growth are primarily influenced by hormonal and genetic factors.

Pathophysiology and Hormonal Influence:

Fibroids are hormone-dependent tumors, with estrogen and progesterone playing critical roles in their growth [5, 15]. They typically emerge during a person's reproductive years, often increasing in size during this period and frequently shrinking after menopause when hormone levels decline.

Non-Modifiable Risk Factors:

Several factors that cannot be changed are associated with an increased risk of developing uterine fibroids:

  • Age: Fibroids are most prevalent in individuals of reproductive age, with incidence increasing significantly in the third and fourth decades of life [3, 10, 13]. For instance, they affect over 60% of patients aged 30-44 years [13]. They are rare in adolescence, affecting less than 1% of this age group [7].
  • Race/Ethnicity: There is a notable disparity in fibroid prevalence, with African-American women experiencing a higher incidence. They also tend to develop fibroids at a younger age, have larger tumors, and often present with more severe symptoms [10, 15].
  • Genetics and Family History: A genetic predisposition is recognized, and having a family history of uterine fibroids increases an individual's risk [15].

    • Modifiable Risk Factors:

    The provided research primarily highlights non-modifiable factors influencing uterine fibroid development. While broader medical literature suggests potential modifiable risk factors such as diet and lifestyle, these specific sources do not provide detailed evidence on such contributors.

    Diagnosis

    Diagnosis

    Uterine fibroids, also known as leiomyomas, are benign growths originating from the uterine muscle [6, 15]. While many individuals with fibroids remain asymptomatic, they are often discovered incidentally during routine pelvic examinations or imaging [13]. When symptoms are present, they commonly include abnormal uterine bleeding, pelvic pain, pressure on adjacent organs, and, in some cases, infertility [3, 10, 11].

    The diagnostic process typically begins with a clinical assessment and physical examination, which may reveal an enlarged or irregularly shaped uterus [5].

    Recommended Tests and Imaging:

  • Ultrasound: This is the primary imaging modality for diagnosing uterine fibroids due to its accessibility and effectiveness [13]. Both transabdominal and transvaginal ultrasound are used to identify fibroids, determine their size, number, and precise location within the uterus [5].
  • Magnetic Resonance Imaging (MRI): When a more detailed evaluation is required, particularly for surgical planning, complex cases, or to differentiate fibroids from other pelvic masses, MRI is considered the gold standard [3, 10, 13]. MRI offers superior soft tissue contrast and provides comprehensive mapping of fibroid characteristics [13].
  • Saline Infusion Sonography (SIS) or Hysteroscopy: For fibroids that protrude into the uterine cavity (submucosal fibroids) and are associated with abnormal bleeding or infertility, these procedures can provide a clearer view of the uterine lining and fibroid involvement [5].

    • Biomarkers:

    Currently, there are no specific blood-based biomarkers routinely used for the diagnosis of uterine fibroids. Diagnosis relies primarily on clinical presentation and imaging studies.

    Diagnostic Challenges:

    A significant challenge in diagnosis is the high percentage of asymptomatic cases, where fibroids are discovered incidentally [13]. This means many individuals may have fibroids without being aware of them. Additionally, symptoms can overlap with other gynecological conditions, potentially leading to delayed diagnosis if comprehensive imaging is not pursued. Uterine fibroids are extremely rare in adolescence (<1%), making diagnosis in this age group particularly challenging due to limited understanding of their biological behavior in younger individuals [7]. The average time to diagnosis is not consistently reported in the literature, likely due to the varied presentation from asymptomatic to severely symptomatic cases.

    Treatment

    Treatment

    The approach to managing uterine fibroids is highly individualized, taking into account the severity of symptoms, fibroid size and location, the patient's age, and their desire for future fertility [1, 3, 5]. For individuals with asymptomatic fibroids, active monitoring is often the recommended course of action [1, 13].

    Medical Management

    Medical therapies primarily focus on alleviating symptoms such as heavy menstrual bleeding (HMB) and pain.

  • First-line options for symptom management include non-steroidal anti-inflammatory drugs (NSAIDs) for pain relief and hormonal contraceptives (e.g., oral pills, patches, vaginal rings, or levonorgestrel-releasing intrauterine systems) to reduce HMB and associated pain [1, 13]. Tranexamic acid is also an effective option for reducing HMB [1, 13].
  • Gonadotropin-releasing hormone (GnRH) agonists (e.g., leuprolide) induce a temporary menopause-like state, leading to fibroid shrinkage and reduced bleeding. These are often used as a short-term measure before surgery or to manage severe symptoms, but long-term use is limited by side effects such as hot flashes, vaginal dryness, and potential bone density loss [1, 5, 13].
  • GnRH antagonists (e.g., elagolix, relugolix) offer similar benefits to agonists with a faster onset of action and can be used with add-back therapy to mitigate menopausal side effects [1, 15].
  • Selective progesterone receptor modulators (SPRMs), such as ulipristal acetate, can reduce fibroid size and bleeding. However, their availability and use are restricted in some regions due to concerns regarding liver safety [1, 6, 15].

    • Surgical Management

    Surgical interventions provide definitive treatment or targeted fibroid removal.

  • Myomectomy involves the surgical removal of fibroids while preserving the uterus. This is the preferred option for individuals who wish to maintain their fertility [1, 2, 3]. Myomectomy effectively relieves symptoms and improves quality of life, with outcomes comparable to uterine artery embolization (UAE) in some measures . However, fibroid recurrence remains a possibility [1, 6].
  • Hysterectomy, the surgical removal of the uterus, offers a definitive cure for fibroids and eliminates any risk of recurrence [1, 3, 5]. It is typically considered for individuals who do not desire future pregnancies or when other treatments have proven ineffective .

    • Minimally Invasive and Emerging Therapies

    These uterus-sparing options represent advancements in fibroid management.

  • Uterine Artery Embolization (UAE) works by blocking the blood supply to fibroids, causing them to shrink. UAE is effective for symptom reduction and improving quality of life, with reintervention rates generally similar to myomectomy in meta-analyses [2, 3, 11]. Common side effects include pelvic pain and post-embolization syndrome [1, 3].
  • High-Intensity Focused Ultrasound (HIFU) utilizes targeted ultrasound energy to destroy fibroid tissue [3, 11]. While effective in reducing fibroid volume and symptoms, HIFU has shown higher re-intervention rates compared to UAE (relative risk = 4.06) .
  • Radiofrequency Ablation (RFA) uses heat to destroy fibroid tissue [11]. Data regarding its long-term efficacy and impact on fertility are still being accumulated [11].

    • Lifestyle & Integrative Approaches

    Lifestyle & Integrative Approaches

    Evidence-based information on lifestyle modifications, dietary approaches, supplements, and complementary therapies for uterine fibroids is limited within the provided research sources. While these factors are generally important for overall health, specific recommendations for fibroid management are not extensively detailed [1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15].

    #### Dietary Approaches and Supplements

    The provided research literature does not offer specific evidence-based dietary guidelines or recommendations for individuals with uterine fibroids [1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15]. Information regarding particular foods to consume or avoid, or the role of specific nutritional supplements in influencing fibroid growth, symptom severity, or prevention, is not present in these sources. The focus of the referenced materials is primarily on medical, surgical, and minimally invasive interventions for fibroid management.

    #### Exercise, Stress Management, and Sleep

    Similar to dietary considerations, the provided research does not include specific evidence-based recommendations concerning exercise regimens, stress management techniques, or sleep hygiene practices for the direct management or prevention of uterine fibroids [1, 2, 3, 4, 5, 6, 7, 9, 10, 11, 12, 13, 14, 15]. While these elements are recognized as crucial for general health and well-being, their specific impact on uterine fibroid development or symptom alleviation is not elucidated in the given literature.

    #### Complementary Therapies

    Among complementary therapies, acupuncture has been investigated for its potential role in managing uterine fibroids. A systematic review from 2010 examined the use of acupuncture, noting its historical application in traditional medicine for various conditions, including uterine fibroids [8]. However, this review concluded that the available scientific literature at that time did not provide clear evidence regarding the benefits or harms of acupuncture specifically for uterine fibroids [8]. Therefore, robust evidence supporting acupuncture as an effective treatment for uterine fibroids was not established in this particular systematic review [8].

    Prognosis

    Prognosis

    Uterine fibroids are benign tumors that originate from the muscular wall of the uterus [3, 6, 13]. While they are highly prevalent, affecting over 60% of women aged 30-44 years, a significant percentage remain asymptomatic and may be discovered incidentally [13]. The long-term outlook for individuals with uterine fibroids varies considerably depending on whether the condition is managed and individual factors.

    In unmanaged scenarios, fibroids typically grow during the reproductive years under hormonal influence and often regress or shrink after menopause [1, 5]. However, approximately 30% of individuals will experience symptoms such as abnormal uterine bleeding, heavy menstrual bleeding, pelvic pain, or pressure, which can significantly impact quality of life [6, 13]. Without intervention, these symptoms can persist or worsen, potentially leading to complications like iron deficiency anemia from heavy bleeding [13]. Fibroids are rarely seen in adolescence, but their behavior in this age group is less understood [7].

    With managed care, the prognosis is generally favorable, with the primary goal being symptom relief and improved quality of life [2, 6, 13].

  • Uterus-preserving treatments like myomectomy (surgical removal of fibroids) effectively alleviate symptoms and preserve fertility, but fibroids can recur [1, 6].
  • Uterine artery embolization (UAE), which blocks blood supply to fibroids, also reduces symptoms [2, 3]. While effective, High-Intensity Focused Ultrasound (HIFU) has been associated with a higher re-intervention rate compared to UAE (relative risk = 4.06, 95% confidence interval: 2.47-6.69) [4].
  • Hysterectomy, the surgical removal of the uterus, offers a definitive cure by eliminating all fibroids and the risk of recurrence, though it is not an option for those desiring future fertility [3, 5, 6].

    • Factors influencing prognosis include the individual's age, the size, number, and location of the fibroids, and the chosen treatment modality [1, 3, 5]. The desire for future fertility is a critical consideration, as some treatments are uterus-sparing while others are not [1, 12]. The long-term impact on fertility and pregnancy outcomes is an an evolving area of research, with fibroids potentially affecting fertility and increasing pregnancy loss risk [12, 14].

    When to Seek Help

    When to Seek Help for Uterine Fibroids

    Uterine fibroids are common benign tumors, affecting over 60% of individuals with uteruses aged 30-44 years [13]. While many fibroids are asymptomatic and discovered incidentally, approximately 30% cause symptoms that significantly impact quality of life [13]. Seeking medical evaluation is appropriate when fibroid-related symptoms arise or worsen.

    Specific situations warranting consultation with a healthcare provider specializing in women's health include:

  • Abnormal or Heavy Menstrual Bleeding: This is the most common complaint associated with symptomatic fibroids [13]. Heavy menstrual bleeding (HMB) can lead to iron deficiency (ID) and iron deficiency anemia, which may manifest as fatigue, weakness, or shortness of breath [13].
  • Pelvic Pain or Pressure: Fibroids can cause chronic pelvic pain or "bulk-related symptoms" due to their size and pressure on adjacent organs [3, 10]. This may include a feeling of fullness, frequent urination, or constipation.
  • Impact on Quality of Life: If symptoms, regardless of their severity, interfere with daily activities, work, social life, or overall well-being, a medical evaluation is recommended [2, 6, 13].
  • Concerns about Fertility or Pregnancy: Fibroids can impact fertility and increase the risk of pregnancy loss [12, 14]. The data regarding this association is evolving and can be complex [12, 14]. Individuals experiencing difficulty conceiving or recurrent pregnancy loss, especially if fibroids have been identified, should seek specialized reproductive health advice.
  • Rapidly Growing Pelvic Mass: While fibroids are benign, any rapidly growing mass in the pelvis should be evaluated to rule out other conditions.
  • Symptoms in Adolescence: Uterine fibroids are extremely rare in individuals under 18 years, occurring in less than 1% of this population [7]. Any symptoms suggestive of fibroids in adolescents should prompt a thorough medical assessment.

    • Individuals are encouraged to advocate for their health by clearly communicating their symptoms, concerns, and how fibroids affect their daily life. The decision regarding the best course of action should involve a comprehensive discussion with a healthcare provider, considering individual circumstances and treatment goals [5].

    Fertility Impact

    Fertility Impact

    Uterine fibroids, benign growths originating from the uterine muscle, are common, affecting over 60% of individuals aged 30-44 years [13]. Their impact on fertility and reproductive outcomes is complex and an area of ongoing research [12, 14].

    Conception and Infertility

    While many individuals with fibroids conceive without difficulty, fibroids are increasingly observed in those seeking infertility treatment, partly due to the trend of delayed childbearing [14]. The association between fibroids and infertility can be controversial, but certain fibroids can impair fertility [14]. Mechanisms by which fibroids may affect conception include:

  • Distortion of the uterine cavity: Submucosal fibroids (protruding into the uterine cavity) and large intramural fibroids (within the uterine wall) can interfere with sperm transport, embryo implantation, or early embryo development [14].
  • Fallopian tube obstruction: Large fibroids can physically block the fallopian tubes, preventing egg and sperm meeting [14].
  • Changes in uterine environment: Fibroids may alter uterine blood flow or endometrial receptivity, making it harder for an embryo to implant [14].

    • Small, subserosal fibroids (on the outer surface of the uterus) are generally less likely to impact fertility [14].

    Pregnancy Outcomes

    Fibroids can have significant impacts on pregnancy outcomes [12]. Potential complications include:

  • Increased risk of miscarriage [12].
  • Preterm labor and delivery [12].
  • Placental abruption [12].
  • Fetal malpresentation [12].
  • A higher rate of Cesarean section [12].

    • Postpartum Considerations

    Information specifically detailing the postpartum impact of fibroids in the provided sources is limited. However, the overall reproductive health can be affected [12].

    Treatment Implications for Pregnancy Planning

    For individuals planning pregnancy, the choice of fibroid treatment is critical and aims to optimize reproductive health [12].

  • Myomectomy: Surgical removal of fibroids is often recommended for symptomatic individuals who desire future fertility, particularly for those with fibroids distorting the uterine cavity [6, 11, 14]. Myomectomy is considered a fertility-preserving option and can be performed via laparotomy, laparoscopy, or hysteroscopy .
  • Uterine Artery Embolization (UAE): This procedure is generally not recommended for individuals desiring future pregnancy due to potential risks to ovarian reserve and uterine function [11]. While some pregnancies have occurred post-UAE, high-quality data comparing its safety and outcomes to myomectomy for fertility is limited and conflicting [11].
  • Minimally Invasive Ablative Therapies (e.g., HIFU, RFA): High-intensity focused ultrasound (HIFU) and radiofrequency ablation (RFA) are uterus-sparing alternatives [11]. Early studies suggest their effectiveness in symptom management, but high-quality data on their impact on fertility and pregnancy outcomes is limited [11]. HIFU, for instance, has been associated with a higher re-intervention rate compared to UAE .
  • Medical Management: While medical therapies can manage symptoms, they are not typically used to directly improve fertility and are often considered for those not desiring pregnancy or as a bridge to other treatments [15].

    • Preconception management strategies are crucial to address fibroids and optimize reproductive health before attempting pregnancy [12].

    Patient Perspective

    Patient Perspective

    Uterine fibroids, the most common benign tumors in individuals with uteruses, significantly impact the lived experiences of many, particularly those aged 30-44 years, where prevalence can exceed 60% [3, 13]. While many fibroids are asymptomatic, approximately 30% of cases lead to symptoms that diminish quality of life [13]. The emotional and physical toll can be substantial, stemming from symptoms such as heavy menstrual bleeding, pelvic pain, pressure on organs, and potential challenges with fertility [10, 11, 12, 13]. Heavy menstrual bleeding, a frequent complaint, often results in iron deficiency and anemia, further exacerbating fatigue and impacting daily function [13]. The cumulative effect of these symptoms can lead to a poor overall quality of life [6].

    Navigating the healthcare system with uterine fibroids can be complex due to the wide array of available treatment options, ranging from medical management to various minimally invasive and surgical interventions [3, 5]. Individuals often face decisions between traditional surgical approaches, such as hysterectomy, and uterus-preserving alternatives like myomectomy, uterine artery embolization (UAE), or high-intensity focused ultrasound (HIFU) [6, 11, 15]. For those considering future fertility, the need for uterus-sparing options is particularly emphasized [10, 12, 14].

    Self-advocacy plays a crucial role in ensuring that treatment aligns with personal values and life goals. It involves understanding the benefits and risks of each option, such as the observation that HIFU may have a higher re-intervention rate compared to UAE (relative risk = 4.06) [4]. Individuals may need to actively engage with their healthcare providers to explore all suitable options, especially given the ongoing development of medical treatments that do not require surgical intervention [6, 15]. The journey with uterine fibroids often involves seeking validation for symptoms and persistent efforts to find effective management strategies that address both physical discomfort and emotional well-being.

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      Image-guided therapies for uterine fibroids.— Lewis JM et al., International journal of gynaecology and obstetrics: the official organ of the International Federation of Gynaecology and Obstetrics (2025)
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      Advancements and Emerging Therapies in the Medical Management of Uterine Fibroids: A Comprehensive Scoping Review.— Krzy&#x17c;anowski J et al., Medical science monitor : international medical journal of experimental and clinical research (2024)
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      The management of uterine leiomyomas.— Vilos GA et al., Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC (2015)
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      High-intensity focused ultrasound treatment for symptomatic uterine fibroids: a systematic review and meta-analysis.— Yan L et al., International journal of hyperthermia : the official journal of European Society for Hyperthermic Oncology, North American Hyperthermia Group (2022)
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      Minimally invasive and ablative therapies for symptomatic uterine fibroids: a narrative review.— Gemesi TS et al., Current opinion in obstetrics & gynecology (2025)
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