If nipples are really modified sweat glands...?
486268
Maybe canids lost the majority of their sweat glands because they weren't helping much under all that fur.  Sweat is only an efficient way of cooling if it can evaporate.  So for animals covered in fur or humans in humid environments, sweat glands aren't very useful.  The sweat glands that dogs do have aren't enough to cool them off so they pant in addition to sweat.  Humans and chimps have the most sweat glands of any mammal. All over body and highest density on palms of hands and soles of feet.   Mammary glands being derived sweat glands puts a whole new spin on that glass of milk doesn't it?\nSpeaking of mammary glands and nipples... did you know that men can lactate?  One of the major stimuli to produce milk is the suckling of a child.  So women who adopt can, with lots of patience and effort, begin to produce milk.  Their are situations in tribal groups where men who are not able to hunt are left behind to care for the children.  In order to soothe a baby they will offer a nipple.  Enough times and they will begin to produce milk.  There is also a bat where it is normal for the male to produce milk and help feed the offspring.
1128562
No, only mammals (with the exception of monotremes) have nipples. Chicken "breasts" are their huge pectoral muscles. \nI hope you're on the winning side :-)
1129775
ALL nipples are sexy (thats' cause I love women so much, \nespecially their breasts). Leave nature alone, I'm sure you're\nbeautiful just as you are.
1145592
you can make them look bigger with a push up bra...and you can also get fake enhancements to stuff into your bra...but those can look pretty fake
13909
I remember hearing it this way:  (in layman's terms) When we are in the womb, the genetics that determine whether we will become a man have not "kicked in" yet. At that time the mammary glands are beginning to develop. Then the "male" codes kick in and stop the process after the nipples have developed. They then become just decorative.
989312
first, human male nipples are not useless, nor are they "vestigial" (more about "use" in a moment)\n\nto answer the latter part of your question...yes!\n\nmales actually can lactate under certain conditions (stress, medicinal/hormonal stimulation, and others); males do have, unbeknown to many, mammary glands\n\nbut male lactation is an unusual, rare event\n\nand human males would not be able to produce the quantities of milk needed to adequately nurse offspring\n\nthe primary purpose of the human male nipple is to serve as an erotic stimulus\n\nthe very first command that god gave to man and woman (adam and eve) was reproduce and fill the earth (ie, have sex and make babies)\n\n(of course the sexual relationship was always and only intended to be addressed within the marriage relationship...on the other hand, neither was it intended to be limited to some simple act of nothing more than making babies; it was also intended for pleasure according to the "song of songs"\n\nin the physically fit male, which men were originally intended to be, the nipples serve to sexually stimulate the female when they gaze at their husbands while working or relaxing; they also serve to sexually stimulate the male when his wife offers manual or oral stimulation\n\nin short, the primary function of male nipples is to serve as an erogenous zone (through visual and/or tactile stimulation)
492591
Not every woman who lactates has an increase in breast size.
178475
it is supposed to make your nipple more sensitive\n\n...so I had my nipples pierced, and when the wounds were healed, I had rings inserted...with regard to the experience of wearing these rings, I can only say that they are not in the least uncomfortable or painful. On the contrary, the slight rubbing and slipping of the rings causes in me an extremely titillating feeling, and all my colleagues I have spoken to on this subject have confirmed my opinion." London socialite writing in "Vogue" 1890
1045846
I can't stand hairy guys.  I like them clean cut and waxed everywhere!  Why? So nipple hairs and other hairs do not get caught between my teeth or cause me to start coughing in the middle of a hot moment.:)
720164
it's Nipple.  and...\n\nSeveral things causes the tissue around the nipple to become "hard"...\n\nEmotions, cold, and yes... sometimes excitement.\n\nPersonally, I suggest you look for OTHER behaviors and conversation to determine the level of arousal.
645957
All human embryos in the womb look the same externally, until testosterone is either added or not.  If not, the baby will develop physically as a girl, if the testosterone is added, the baby develops physically as a boy.  This is true regardless of the XX or XY chromosome of the baby.  The nipples develop prior to the addition of the testosterone.\n\nThey are there because the child could have developed as a woman, and the only purpose that I can think of that they have for men is perhaps a little thrill when your lover pinches them. :)
494911
A good plastic surgeon that specializes in nipple/areola correction should be able to help.\n\nSpeak frankly with your primary physician and get a referral to one.\n\nP.S. You know guys, this is a serious question and she already said the condition is embarrassing. She probably has had enough rude adolescent comments on them. If you are not going to give a serious thoughtful answer, don't post!
126988
Put a nipple on it. =_=
602450
Without Nipples the Male Chest Looks Strange.  The nipples provide a focus point for the male chest. They direct the eye to the curve of the pectoral muscle. \n\nMen and women are mammals (from the Latin mamma breast) a species that have breasts and feeds its young with milk. The human embryo has tissue that will evolve into breasts. Both male and female babies are born with nipples and ducts intact. It is the presence of genes that direct hormones to differentiate the breast tissue. The Y chromosome stimulates hormones such as testosterone to form male features.\n\nInsufficient or defective testosterone, poor tissue responsiveness, or an unbalance of other hormones like Estrogen and Prolactin can cause female like breasts even in men (Gynecomastia). At birth, the small amount of the mother's estrogen in the baby can result in small breasts that usually resolve. There can be an inbalance of hormones during male puberty that can result in temporary breast growth, which for most resolves. There are many medical problems and drugs that can cause male breast growth. \n \nThe nipple is actually the central protrusion inside of the pigmented areola. There is a thin muscle just under the skin that when stimulated, tends to flatten the puffed male nipple areola. This muscle when stimulated in a breast feeding woman, projects the nipple for the baby. Nerves that innervate the nipple / areola can produce pleasure for both men and women.
335614
Interesting.  It is possible that the sweat glands or the left armpit are obstructed, but it is unlikely that this could occur in an entire area of skin.  It is possible to be born without sweat glands in a particular patch of skin or throughout their entire body.  The condition is called Anhidrotic Ectodermal Dysplasia
446999
why do men have nipples?
1028860
yes, women's nipples are all shapes and sizes, enjoy,i do!