Hormonal breast enhancement
Wikipedia also has an article on this topic.
PLEASE DON'T TRY THIS AT HOME! This is highly experimental and incredibly dangerous stuff.
Estradiol by itself doesn't stimulate breast development. IGF-1 acts in concert with estradiol to build breast tissue and determine final breast size. In essence, estradiol pulls the steering wheel towards "breasts", and IGF-1 slams the gas pedal. In fact, IGF-1 is the strongest determinant of breast size as measured during the follicular phase of cisgender women.
Risks of increasing IGF-1
Acromegaly, a masculinizing pronouncement of facial bone structure, is caused by abnormally high levels of IGF-1.
IGF-1 has been linked to breast cancer.
Naturally increasing IGF-1
Artificially increasing IGF-1
- Mk-677 amplifies the production of IGF-1, rather than simply increasing production by a constant level. This means that the body's natural cycle of IGF-1 production will only be heightened, with higher peaks. This drug has been under clinical investigation for some time, however its primary use is bodybuilders.
- This Reddit thread by justsallygirl is a national treasure.
- This other Reddit thread by a user who tried to test this.
- This list of ways to increase IGF-1.
- Breast Nexus is a natural breast enhancement forum. There's even a section for "genetic males."
- This BN thread discusses taking deer velvet extract under the tongue to get IGF-1 for possible breast enhancement.
- This other BN thread discusses a natural-ish BE regimen.