"[2] He noted that none of the participants' surgeons discussed the potential for future chestfeeding before performing top surgery, and that "the range of experiences and showing more nuance, more complexity, about transgender lives is what is most important in this study.

When he and his partner decided to start a family, on advice from a doctor, Kirczenow stopped hormone therapy and was able to become pregnant.

"[8] Before his child was born, Kirczenow (under his married name, MacDonald), sought peer-to-peer support from his local chapter of La Leche League (LLL), the international breastfeeding organization.

"[10][11] The board of La Leche League International (LLLI) reviewed the policy,[12] citing its mandate to be a "nondiscriminatory service organization."

LLLI said to other leaders: "We recognize that any breastfeeding parent, regardless of whether they self-identify as a mother or father, should be – and is now – welcome to investigate LLL Leadership.

There are other prerequisites that a potential Leader needs to satisfy, but being a woman isn't one of them.”[15] In 2012, Kirczenow founded the international advocacy and support group, "Birthing and Breast or Chestfeeding Trans People and Allies".

"[20][21][22] However, Snopes reported that while MANA did change some of the language in their core materials to clarify they welcomed transgender and cisgender clients in their scope of practice, those decisions were based on their own standards of care, inclusion, and position on gender identity, and not due to pressure from Kirczenow or any other trans people.

[4] Kirczenow is the author of a tip sheet for volunteer leaders who are providing support to transgender, transsexual, and genderfluid individuals who wish to nurse their babies[35] and was profiled in La Leche League International's magazine, Breastfeeding Today.