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What are Breast Enlargement Hormones?

By Henry Gaudet
Updated Mar 03, 2024
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Breast enlargement hormones might seem to offer an easy alternative to surgical breast augmentation for women seeking an increase in bust size. In fact, they have been shown to significantly increase the volume of breast tissue and has often been prescribed to transgender males. Women taking hormone replacement therapy or hormone-based birth control pills frequently report breast enlargement. Generally speaking, however, hormone treatments are not prescribed to healthy women who want them for purely cosmetic reasons, primarily because of the dangerous side effects of these hormones.

The most effective breast enlargement hormones are estrogen and progesterone. These hormones are produced in females, and their levels increase naturally with the onset of adolescence. Estrogen and progesterone trigger secondary female characteristics such as breast growth and are responsible for a girl’s development into a woman. Prolactin and human growth hormone also play a role in this transformation.

In the adult female body, hormone levels rise and fall because of the menstrual cycle, and factors such as pregnancy and menopause cause dramatic shifts. High levels of estrogen and other hormones will, among other things, affect breast growth and fluid retention, which also contributes to bust size. When hormone levels fall, the breasts reduce to their original size. It is possible to maintain high levels of breast enlargement hormones or similar substances by taking regular doses of these hormones, and as long as these substances are taken, the breasts will remain larger.

Side effects related to breast enlargement hormones can, however, be quite serious. Apart from their well-known effect on mood, high hormone levels can disrupt the menstrual cycle, affect fertility and cause chronic health concerns such as anemia, high blood pressure and even cancer and organ failure. For those willing to face these risks, this treatment still should be avoided by women during pregnancy and breastfeeding. Transgender men also should be aware of the profound effect that these hormones have on the male body and should take these hormones only under a doctor’s supervision.

There are a number of over-the-counter creams and pills that claim to produce results like those found with breast enlargement hormones. These products can trigger breast growth, but the results are likely to be modest compared with hormone treatment. Most of these treatments use a number of herbal components to stimulate growth. Some of these ingredients can behave in a way similar to estrogen, but it remains unclear what additional effects large doses might have on the body. Experts are concerned about potential side effects relating to menstruation, fertility and long-term health issues similar to those from hormone treatments.

The Health Board is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Discussion Comments
By anon317601 — On Feb 03, 2013

Does the menstrual period become longer while breasts are growing?

By Proxy414 — On Mar 05, 2011

Some of these hormones may cause the breasts to become so large that balance is difficult even for women. This is the case with models like Pamela Anderson, who have become extreme examples of sex icons and have effectively lost their identities. Breast implants can also poison the body and cause cancer if they are not the right kind. What a terrible waste of money.

By BigBloom — On Mar 02, 2011


The center of gravity for men can be a lot different than that of women. Normally, men have their center of gravity in the top half of the body while women have theirs in the lower half. Being aware of the shifts in balance involved with developing breasts can be important. Men may cause themselves to become too top heavy and fall over frequently.

By TrogJoe19 — On Mar 01, 2011

If men are interested in developing breasts, it is important that they recognize the pain that can be associated with this process, as well as the many issues involved with properly caring for and protecting healthy breasts. Breasts drastically affect your figure and can cause your balance to shift. Maintaining healthy and appropriately sized breasts can be a difficult task for men.

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