It can contain natural milk, but the natural milk is tainted and is unsafe for a baby. As for the posters below, yes men can produce milk, although not the type of milk that will increase your baby's immune system health.
no, but one time an ex coworker of mine told me that both women AND men could both give out milk through their nipples. its just that women have larger organs to produce milk. not sure if that's true or not because he was also the guy who used to LOVE looking at porn on his i-phone. lol. however, just thought i share that fun little fact.
From what I have read, there are several tribes in Papa New Guinea where the old men of the tribe nurse and care for the babies. The younger men hunt while the women farm and/or care for the herds of pigs.
Hmmm...Now that the question has been asked, I am also curious. I don't know...I DO know that some implants are (or at least used to be) inserted via the nipple as opposed to cutting underneath the breast and leaving a visible scar. I've heard that the operation leaves one without sensitivity...I wonder if it damages the mammary glands?