• Samvega@lemmy.blahaj.zone
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    5 months ago

    All dudes have boobs. They have nipples and breast tissue. They can lactate (small amounts) and get breast cancer.

    This is because, in mammals, the default sex leans towards more female. An XY-chromosome ‘male’ foetus that doesn’t respond to androgens in the womb will not develop male external genitalia, and will probably be assumed to be female on birth.

    Sex is not binary, because biology isn’t simple. Gender, which is more complex than that, is not, either.

      • Snowclone@lemmy.world
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        5 months ago

        Rare cam be a deceptive term, with the current population of the human race ‘one in a million’ is still 8,000 people.

        But also, male lactation, other than infants at birth who have a high exposure to their mother’s hormones, is always a significant medial concern, so it isn’t something that just sometimes happens.