A 30-year-old transgender woman has made history by becoming the first in the world to be able to breastfeed her baby.
The woman, who is unnamed, was able to feed her baby breastmilk for six weeks, after undergoing hormone treatment.
The breakthrough case was published in the Transgender Health journal, after the woman sought out treatment because her pregnant partner didn't want to breastfeed.
The woman had already been on a hormone regime for six years, but had yet to undergo any gender-based surgeries.
As part of the treatment to allow her to breastfeed, she had to take three doses of domperidone - a drug that has the side effect which helps the body produce more milk - three times a day, while also starting to use a breast pump.
- Customer complains after mum breastfeeds in front of male co-worker
- Mum's incredible breastfeeding yoga photos
According to the case study, the baby is developing healthily.
The researchers are now looking into whether it will be possible to induce lactation without using the drug.
Late last year a transgender man also made history after giving birth to a healthy baby - five years after having his first child while living as a woman.
Kaci Sullivan is believed to be the first person in the world to give birth while living as both a woman and a man.
The 30-year-old underwent a C-section following seven days in labour and welcomed Phoenix into the world four years after beginning the transition from female to male.
Got a story tip? Send it to firstname.lastname@example.org