If you’ve been struggling with unexplained weight gain, bloating, or a persistent increase in your abdominal size, you may be wondering: Can uterine fibroids cause weight gain? The answer is more complex than a simple yes or no. While fibroids themselves don’t necessarily make you gain weight in the traditional sense, their size, hormonal influence, and related symptoms can contribute to noticeable weight changes.
So, let’s dive deep into the connection between uterine fibroids and weight gain, backed by research, expert insights, and practical tips for managing symptoms effectively.
Understanding Uterine Fibroids
Uterine fibroids, also known as leiomyomas or myomas, are non-cancerous growths that develop in or around the uterus. They are incredibly common, affecting up to 70-80% of women by the age of 50, according to the National Institutes of Health (NIH). Despite their prevalence, many women remain unaware they have them until they start experiencing symptoms.
Fibroids vary in size—some as small as a pea, while others can grow as large as a grapefruit or even bigger. Can uterine fibroids cause weight gain? The larger they grow, the more likely they are to contribute to an increase in body weight and abdominal girth.

How Can Uterine Fibroids Cause Weight Gain?
There are several ways fibroids may contribute to weight gain:
1. Increase in Abdominal Size Due to Large Fibroids
Larger fibroids can cause the abdomen to protrude, leading to what some may mistake for weight gain. In extreme cases, women with massive fibroids can appear several months pregnant. Some fibroids can weigh several pounds—cases of fibroids weighing 10-20 lbs or more have been reported.
2. Water Retention and Bloating
Many women with fibroids experience bloating, which can add to a feeling of heaviness or weight gain. Fluid retention, especially before or during menstruation, may exacerbate the issue.
3. Hormonal Influence
Fibroids are estrogen- and progesterone-sensitive, meaning that their growth is influenced by hormonal fluctuations. Can uterine fibroids cause weight gain through hormones? Yes! When estrogen levels are high—due to pregnancy, perimenopause, or hormonal imbalances—it can contribute to both fibroid growth and overall body weight increase.
4. Emotional and Lifestyle Factors
Living with fibroids can lead to fatigue, heavy bleeding, and pain, making it difficult to stay active. Many women reduce their physical activity due to discomfort, indirectly leading to weight gain. Additionally, hormonal changes can trigger cravings and overeating.
Scientific Research on Fibroids and Weight Gain
Studies have shown a correlation between fibroids and increased body mass index (BMI). According to research published in the Journal, women with a higher BMI have a greater risk of developing fibroids. Another study from the American Journalsuggests that estrogen dominance—commonly seen in overweight individuals—may contribute to fibroid growth.
This leads to a cycle where weight gain promotes fibroid growth, and fibroids contribute to additional weight-related concerns. Can uterine fibroids cause weight gain? While not directly responsible for body fat accumulation, they can certainly contribute to changes in body shape and overall weight.

How to Manage Weight Gain Associated with Fibroids?
If you suspect your weight gain is linked to fibroids, there are several strategies to help manage your symptoms:
1. Dietary Adjustments
- Increase fiber intake to help with bloating and digestion.
- Reduce processed foods that contribute to inflammation.
- Limit high-estrogen foods like soy and excessive dairy.
- Stay hydrated to combat water retention.
2. Exercise Regularly
Even moderate activity can help manage weight and improve hormone balance. Low-impact activities like walking, swimming, and yoga can help reduce fibroid-related discomfort.
3. Hormonal Balance
Managing estrogen levels is crucial. Talk to your doctor about natural hormone-balancing strategies, including dietary changes, lifestyle modifications, and, if needed, medication.
4. Medical Treatment Options
For severe cases, medical intervention may be necessary. Some treatments include:
- Medication: Hormonal therapies like birth control pills or GnRH agonists may shrink fibroids.
- Uterine Fibroid Embolization (UFE): A minimally invasive procedure that reduces fibroid size.
- Surgical Options: Myomectomy (removal of fibroids) or hysterectomy (removal of the uterus) may be considered for large fibroids.
Can Uterine Fibroids Cause Weight Gain?
So, can uterine fibroids cause weight gain? While they don’t directly cause fat accumulation, their size, hormonal impact, and related symptoms can contribute to noticeable changes in body weight and shape. If you’re experiencing unexplained weight gain, bloating, or discomfort, it’s important to consult a healthcare provider to determine whether fibroids may be the underlying cause.
Taking proactive steps—such as adopting a fibroid-friendly diet, engaging in regular physical activity, and considering medical treatments—can help you manage both your fibroids and your weight more effectively. If you’ve been wondering, “Can uterine fibroids cause weight gain?”, now you know the answer—and more importantly, what to do about it!