Why the hell do men have nipples,like whats the real purpose they serve? Womens nipples have purpose but mens?
358587
'Male and female human embryos are identical in the early stages of their development. If the fetus receives a Y chromosome from its father, a hormonal signal is produced: the labia fuse to form a scrotum, the gonads develop as testicles and a male results. Otherwise the "default" female remains.  Various structures in the adult reflect the symmetry of male and female and their common embryonic source. Men have nipples because they have already begun to develop when the "switch to male" signal is received. The development of breasts is halted in most--but not all--cases but the nipples are not reabsorbed.'
1122905
Before asking that question, you need to understand what evolution is.   Evolution describes genetic change over time in response to environmental selection pressures on a species.  This means that advantageous changes are not weeded out.  In fact, all traits which do not negatively impact survival or reproduction, will not be weeded out.  Nipples on a man fall into this category.  Further, if anything, nipples are PROOF of evolution - In general, all species evolved from a prototype ancestral condition; thus, there exists genotypic and phenotypic similarities between members of a species and between related species.  All mammals have nipples, male or female, because our earliest mammalian ancestor had nipples (in fact, what makes us all "mammals" is the ability to produce milk via "mammary" glands to nurse our young).  Thus, both genders of our species (and all mammalian species) have nipples.  Nipples are a conserved evolutionary trait and are not gender-specific.
1142012
I actually do know this.  In eutero, your nipples are formed before your sex organs develop.  Women go on to use hormones to create breasts, but for men, there is absolutely no reason to have them.\n\nThat is the 100% truth...
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.
558372
Nice decent women do not like for their nipples to show through except in the bedroom.\n\nIt is a natural effect caused by cool breeze, shirt rubbing against them, and from being horny.
926200
Here are the reasons, and this is more animal instinct than rational thought.\n1. Breasts serve as a sign that a female is no longer a girl, but a sexually mature woman. So they say to men: this female is ready to mate with.\n2. They are one of the more obvious differences between a man and a woman (other than genitalia), so they become almost as sexually significant as the vagina. That is why the "tit wânk" is a popular sexual practice.\n3. Of all the physical differences between man and woman, breasts are the easiest to hold. A man can clasp all, or most of, a breast in his hand (all up to C cup, most from D upwards). The next favourite part of the female body for clutching is the bottom, but that is always much too big to fit in a hand. Other things like longer female neck or the vulva can not be held in this way.\n4. A man soon learns that women enjoy breast stimulation. Not only that, but there is a very real relationship between breast size and sensitivity. The larger the breasts, the more sensitive they are. Fortunately there is a similar relationship at work with men. The more a man like breasts, the more attention he is likely to give them (obviously). So a large-breasted woman is likely to have a "boobs man" for her partner, and she will derive immense satisfaction from the amount of touching, stroking, squeezing, kissing sucking etc. that she gets on a regular basis. Conversely a lady with small breasts is likely to be much less sensitive, and to have a partner who is relatively disinterested in boobs.\n\nI hope this answer is useful.
60697
The Straight Dope says, "To tell you the truth, nobody really knows. The best explanation I've been able to find (and frankly it doesn't explain very much) is that nipples aren't a sex-linked characteristic. In other words, nipples are just one of those sexually neutral pieces of equipment, like arms or brains, that humans get regardless of sex." \n\nIt's also notable that the fetus starts to develop nipples long before any other sex-linked characteristics.
168127
To tell you the truth, nobody really knows. The best explanation I've been able to find (and frankly it doesn't explain very much) is that nipples aren't a sex-linked characteristic. In other words, nipples are just one of those sexually neutral pieces of equipment, like arms or brains, that humans get regardless of sex. \n\nAs you may know, every human being gets a unique set of 23 pairs of chromosomes at conception. These fall into two categories. One pair of chromosomes determines sex--the XX combination means you become female, the XY combination means you become male. \n\nThe other 22 pairs, the non-sex chromosomes (they're called autosomes), supply what we might call the standard equipment that all humans get. These 22 pairs constitute an all-purpose genetic blueprint that in effect is programmed for either maleness or femaleness by the sex chromosomes. The programming is done by the hormones secreted by the sex glands.\n\n\nWebMD\nMales and females, though very different, have a great deal in common. In the earliest part of our embryonic development, we all start out much the same. Though the sex of an embryo is determined when sperm meets egg, the genital anatomy of males and females cannot be visually distinguished with the use of ultrasound until the 15th week of pregnancy. \n\n\nFrom the beginning, we all have the tissues that later develop into functioning parts, depending on whether we are genetically coded to be male or female. (The genetic coding that leads to people who have both male and female anatomical traits is much more complex than we'll get into here.) \n\n\nMales have nipples because they develop with the capacity to be female should their chromosomes dictate. Females call upon this capacity when they hit puberty and their breasts develop. Later, if they become pregnant, they call upon it again as milk is created in their breasts. Generally, males do not have a reason for the nipple to function, although, from time to time, adolescent and adult males develop a condition called gynecomastia, in which hormonal levels fool the breasts into beginning to develop. \n\n\nBut for the most part, nipples are on men's chests not for ornamentation, but because we all initially originate from the same kinds of tissues. Males just don't need their breast tissue to be a functioning part of their anatomy
1028860
yes, women's nipples are all shapes and sizes, enjoy,i do!
265525
Nipples are not too much attractive as the whole breast are.But its very sensitive,so it should be covered for its sensitivity.
239458
Men are cut from the same mold as females.  Men HAVE nipples in order for women, who need them, get them.\n\nYeah, yeah, but that is all I got!
955162
cause it's cool!! men usually don't have justifications to why they do wut they do. they just do it!!
1175634
I'm going to answer this complicated query in a most simple way....\nA human fetus' gender is already determined right after conception.\nThe physical characteristics do not manefest themselves until later during in-vitro develpment.\n....Until then, the TEMPLATE, or cookie-cutter, basic start-out form of a human is very ambiguous.\nThat means that we ALL have nipples in the very beginning.\nBoys and girls have the same nipples and even the same glands beneath them, ready to sprout - or not sprout at puberty.\nEven the basic structure of the penis and clitoris are from the same starting out point.... So we ALL start out as a default female, ready to develop completely one way or the other!
20048
Men 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.
62582
Many scientists believe that male nipples are an evolutionary vestige which is simply the result of males and females shareing virtually identical genetic structures.  Some evolutionists belief that evolution has not phased male nipples out because there is no evolutionary advantage to phasing them out.  Also, male nipples do serve a limited function in sexual arrousal.  Further still, male lactation does occur, though rarely, and is no doubt the result of the simularities in the genetic code with females.
47910
actually, I think men were given nipples, so they have something to play with in case they loose their balls
430549
In the womb a fetus develops as a female. At a certain point a chemical is relased determining the sex of the child and the reproducetive organs form, however the baby has developed nipples before this point. Another argument that girls rule ok!