What causes uterine fibroids to shrink?

In general, a reduction in the size of uterine fibroids may be caused by menopause, hormonal changes, medication, endocrine disorders, or interventional treatments. If any of these situations occur, it is recommended to seek timely medical evaluation and treatment. Specific causes are analyzed as follows:

1. Menopause

After entering menopause, declining estrogen levels in women may lead to a decrease in the size of uterine fibroids. It is important to regularly monitor changes in fibroids during daily life.

2. Hormonal Changes

The growth of uterine fibroids is influenced by estrogen and progesterone. When women enter menopause, ovarian function gradually declines, leading to reduced levels of estrogen and progesterone. This deprives fibroids of hormonal support, causing them to shrink over time. Maintaining healthy habits and regular作息 (daily routines) is essential.

3. Medication

Certain medications, such as gonadotropin-releasing hormone (GnRH) agonists or progesterone receptor modulators, can be used. These drugs suppress the pituitary gland's secretion of gonadotropins, thereby reducing ovarian estrogen production and depriving fibroids of the hormonal stimulation needed for growth. Side effects may include hot flashes and mood swings. Patients should follow medical advice when using medications such as leuprolide acetate microspheres for injection, goserelin microspheres for injection, or mifepristone capsules.

4. Endocrine Disorders

Stress, staying up late, and irregular作息 (lifestyles) may contribute to endocrine imbalances. When hormonal imbalance occurs in women—especially decreased estrogen secretion—it may result in shrinking uterine fibroids. Symptoms may include irregular menstruation and mood fluctuations. Treatment under medical supervision may include hydrocortisone tablets, fludrocortisone acetate tablets, or levothyroxine sodium tablets.

5. Interventional Therapy

Uterine artery embolization is a minimally invasive procedure in which embolic agents are injected into the uterine arteries to block blood supply to the fibroids. This leads to ischemia and necrosis of fibroid tissue, which is eventually absorbed, resulting in a smaller fibroid size. Possible side effects include lower abdominal pain and fever. Close postoperative monitoring is necessary, along with follow-up visits as directed by the physician.

Maintaining regular作息 (daily routines), achieving physical and mental balance, and eating a balanced diet are important for sustaining hormonal equilibrium and can help prevent or improve related gynecological conditions.