Male Nipples: Two Views

Live Science claims we all start out as females in the womb, and only after about 60 days the testosterone kicks in if it’s a male. By then, the nipples have already formed and don’t get deleted. As to why there are nerves and blood vessels serving them, the writer appeals to the old vestigial organ argument. There is no reason for male nipples, it’s just that natural selection hasn’t removed them yet. The article denies that early males once suckled the young on the grounds of lack of evidence. “Brace yourselves for a low blow, tough guy,” the article begins, hinting that the evolutionary answer won’t help a man’s self-esteem; at least it calls the nipples “harmless.” The article ends with a link to a list of other alleged vestigial organs, including the coccyx, appendix, wisdom teeth and body hair.


http://www.livescience.com/mysteries/061127_men_nipples.html