While there is a reasonable biological explanation as to why women have nipples—to feed babies—their function in men remains less clear. Male nipples serve no real purpose and, as such, should have been bred out of the human species by now. Of course, they have not, and this has to do with the foundations of how a human begins developing in utero.

They develop at the same time as women’s nipples in the womb

Nipple development occurs about a week before sexual differentiation occurs in embryos, which is why both men and women have nipples.

During embryogenesis (the development of an embryo after fertilization), females and males will both start from the same genetic base, so to speak. It is only in the latter part of the first eight weeks that the $ex genes—called the X and Y chromosome—will dictate whether the baby will be female or male.

The Y chromosome is the one that differentiates males (who will have one X and one Y chromosome) from females (who will have two X chromosomes).

During the first four to five weeks of gestation, there will be no differentiation between $exes even as the embryonic cells continue to divide and specialize. It is only by weeks six or seven that the Y chromosome will induce changes (by way of the SRY gene) that lead to the development of the testes and the male $ex. By this stage, the nipples will have already developed.

Benefits of sleeping without clothes

By contrast, female embryos, which are not under the influence of the Y chromosome, will undergo changes in the mammary cells, starting with the development of a pit at the center of each nipple. This pit will gradually form a depression that connects to a lactiferous (milk-producing) duct.

While this happens to some degree in males, it is far less profound and developed.

Men can get breast cancer

Men can get breast cancer because they have the same breast tissue as women. Although women have larger breasts, the breast tissue we are all born with can develop into cancer at any time.

Men lactating is very rare, but not unheard

If you give enough female hormones to men, there’s a chance some could convert their existing breast tissue into lactating tissue. However, if a man were to just start spontaneously lactating, you may need to see a doctor. “This is rare, and it should always be a warning sign to have this man screened for underlying hormonal abnormalities or cancers.”

Men can also get enjoyment from nipple stimulation

Male nipples can be just as sensitive as nipples in women because both men and women have the same nerve bundles in the nipple.

You can give a man a nipple-job

It’s even possible for men to experience a nipple orgasm. To do this, circle the pigmented portion of the nipple with your fingers or mouth until the nipple becomes hard, and then stimulate each nipple with gentle rubbing or slight pinching. “The harder the nipples become, the more sensitive they are to direct stimulation,”. At this point, you can stimulate both nipples at the same time, and incorporate pulling and sucking on his nipples as well. “Much like the moment before a woman orgasms, don’t stop but don’t keep going full steam,”

Men can develop breasts

The condition is when breasts become enlarged due to excess breast tissue, excess fat, or both (and yes, they’re both different!). While breast tissue is both squishy and firm, breast fat tends to be flabby. As far as nipple changes with gynecomastia, nipples can become enlarged, sensitive, or tender. “The cause of gynecomastia is multifactorial,” but the excess breast tissue can be caused by a hormonal imbalance, pituitary tumour, anabolic steroids, among other causes.

There’s such a thing as a male breast reduction

Gynecomastia surgery removes excess breast tissue, fat, or both, and can consist of skin excision, breast tissue excision, and/or liposuction.

Male breast reduction is also completely different than female breast reduction

The goals of each procedure are totally different. In men, gynecomastia surgery reduces an enlarged breast using liposuction or cutting out excess skin, whereas female breast reduction surgery opts to remove excess volume and heaviness in breasts.

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