
Exploring the Role of Hormones in the Growth of Fibroids
Fibroids are non-cancerous growths that affect many black women during their reproductive years. Although they are common and there are no specific causes of fibroid growth, hormones likely drive their growth. However, what is the fact behind this?
Researchers have identified the main reproductive hormones in women, estrogen and progesterone, as the likely culprits behind this insidious condition. Evidence shows that fibroids enlarge during hormonal fluctuations and tend to shrink after menopause. These hormones do not act alone; other factors also contribute to the condition.
Therefore, understanding the connection between hormones and fibroids is essential for finding effective treatment options. This knowledge will help you make better choices in managing and improving your reproductive health.
Role of Hormones in the Development of Fibroids
Uterine fibroids are benign growths that contain myocytes (i.e., muscle cells) and are characterized by an excessive accumulation of extracellular matrix, primarily collagen. The reproductive hormones, estrogen and progesterone, significantly influence fibroid development.
Estrogen increases the production of certain proteins that encourage cell division in the uterus. Additionally, fibroid tissues typically have more estrogen receptors than normal uterine tissue. These estrogen receptors release stimuli that prompt cell division and differentiation, triggering immature cells to support tumor growth. As a result, fibroids grow more when estrogen levels rise, particularly during a woman’s reproductive years.
Progesterone also plays a role in fibroid development by supporting cell growth and the formation of blood vessels within fibroids, causing them to enlarge. Furthermore, estrogen and progesterone work together to maintain an environment conducive to tumor development because estrogens increase the availability of progesterone receptors inside cells. Thus, the combined effect of estrogen and progesterone fosters fibroid growth. This is why decrease in levels of hormones during menopause naturally shrinks fibroid tissues.
Other Factors That Can Influence Fibroid Growth
- Age
- Race
- Stress
- Genetic factor
- Use of birth control pills
- Vitamin D deficiency
- Use of hair relaxers
- Hypothyroidism


