If both men and women have nipples, why don't men also produce milk and breastfeed? It's a question that's been on all our minds, leading Laci to once and for all explain the reason for male nipples.
Why Do Men Have Nipples?
"Brace yourselves for a low blow, tough guy. Nipples remind us that gender is anything but clear-cut, especially in utero."
Strange but True: Males Can Lactate
"Unless you are an Indonesian fruit bat, though, it probably won't happen naturally."
Sex Begins in the Womb
Sex differences of importance to health and human disease occur throughout the life
span, although the specific expression of these differences varies at different stages of
"This article discusses how a human baby is conceived and how the baby develops inside the mother's womb."
"The embryonic time comprises 56 days, i.e., 8 weeks from the moment of fertilization."
Why do men have nipples?
"The possibility of male lactation may not seem as far-fetched as one might at first expect, since it can happen soon after a baby boy exits the womb."
Seven nipples in a male: World's second case report
"We present a case of seven nipples in a 32-year-old male patient."
Breast Milk Is Magic!:
Humans With Tails:
Edward Jenner vs. Small Pox:
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All humans begin life in the womb as females. If no Y chromosome is present in the foetus, then the embryo will continue to develop as and be born as a female. If there is a Y chromosome present in the embryo, the male sex hormone testosterone restricts the full development of breasts to just nipples, the labia fuse to become the scrotum and clitoris develops fully to become a penis. If the Y chromosome prevails in producing a male, this is not done without a fight. Male babies are weaker as a result than female ones, occounting for the slightly higher death rate in male babies.
2:15 Scientists and doctors actually know why galactorrhea sometimes happen in infants. It is actually because of excessive maternal estrogen hormone in their circulation, it will resolve by it's own once the estrogen level naturally go down within a few days.
Can men make milk exactly same as women if given the right hormones?I mean can they make the right immune factors and antibodies for the baby etc like women do? Breast milk is amazing for health of baby and their immune system and just want to know if anyone knows if men make the same milk or is it lacking things.
Galactorrhea in greek means "flow of milk". If it reminds you of something "galactic" it's because the root is the same. The word "Galaxy" comes from greek, where it means "the road of milk", beacuse greeks believed that the bright line at the night sky is milk, which came out of a goddess's breast.
hello Dnews .. i like your videos on scince topics. i have a topic for you to cover.. the topic is why some people break things when they get angry like smashing there phone on the walls and breaking glass etc. is it help them to relieve stress?? .. thanQ
I think it's simply because as we know, males have an X and Y chromosome and I believe that all men start out as females and later the Y chromosome will kick in and they become male, I think it formed before they became male e.g the Y chromosome kicked in for once
Quick genetics lesson. Cited from "Essentials of genetics 9th edition." Author William s. Klung. Page 88 first paragraph continued from page 87. "During early development, every human embryo undergoes a period when it is potentially hermaphroditic. By the fifth week of gestation, gonadal primordia (the tissue that will form the gonad) arise as a pair of gonadal (genital) ridges associated with each embryonic kidney. the embryo is potentially hermaphroditic at this stage it's gonadal phenotype is sexually indifferent-male or female reproductive structures cannot be distinguished, and the gonadal ridge tissue can develop to form male or female gonads. primordial germ cells migrate to these ridges, where an outer cortex and inner medulla form (outer and inner parts of an organ). The cortex is then able to develop into an ovary, while the medulla may develop into a testis. In addition, two sets of undifferentiated ducts called the wolffian and mullerian ducts exist in each embryonic. wolffian ducts differentiate into other organs of the male reproductive tract, while mullerian ducts differentiate into structures of the female reproductive tract." Now for a quick summary on what causes the male or female reproductive structures to be expressed. basically, it comes down to the SRY gene, this is located on the Y chromosome and at the seventh week the gene express itself and development of the medulla into a testis starts. If there is no Sry gene then the Mullerian ducts form the fallopian tubes, uterus, cervix and so on. many organs of the male and female anatomy are homologous in that they derived from the same structures. examples: The penis and clit are formed from the same basic structure, ovaries and testis you see the trend. like so people can see (never thought I'd say that lol..)
So if all embrios are female and grow into males with hormones, would it not be easy to undergo FtM transition then? According to Lacy it is possible to "develop penis from the clitoris and scrotum from the labia" with just hormones!!!
I wonder if chimpanzees can be grown into humans with those magical hormones too?
Amazing. Simply amazing.
This is a really complicated topic that I'm probably not qualified to answer, but what the hell.
Homosexuality is seen in hundreds of animal species including our closest relatives. The first instinct would be to say that it is genetic, but there are cases in which one twin is homosexual while the other is heterosexual. Also, it would be a mistake to think that homo/hetero are a binary; it's more of a spectrum and many people sit somewhere in between. There may be some epigenetics at play that plays a role, but to my knowledge science hasn't really figured it out. Sexuality is weird and complicated, and not very well studied (especially female sexuality).
As for transgender that one is even more complicated, but it might help to consider that when we think of gender, we're talking about cultural standards of what it is to be a man and what it is to be a woman. Those cultural standards are otherwise arbitrary. As the video already explains, the biological differences between male and female don't develop right away, so essentially males are just modified females. So, given that the biological differences between males and females aren't that large, and the cultural differences are basically arbitrary, some people may feel that they identify more with a gender that doesn't match up with gender society has labeled them. For some people this means they dress differently, maybe use a different name. For some people, they choose to go on hormone therapy, others may undergo surgery all to make their body feel like it matches how they feel inside. Still others may decide that gender is bullshit and don't identify with either man or woman, and live outside those concepts.
All of this may seem a little extreme, but when you think about how pretty much every person individualizes themselves based on clothes and mannerisms, and how many people choose to undergo body modifications of different sorts, it kinda seems more ordinary than not. Hairstyles, fashion choices, tattoos, piercings, cosmetic surgery, etc, all of these are pretty common practices for humans. We now live in a time where it's more accepted to not identify with traditional concepts of gender, so why wouldn't people customize that as a form of personal expression, making their outward appearance reflect who they feel they are inside?
Sorry there's not much science in this response. To my knowledge there's not been a lot of research done in this area. I should also point out that I'm neither homosexual or transgender, so I may have missed the mark on some of this.
Good to see Laci has always been inaccurate. All embryos are androgynous, not female. The devopment of the foetus then determines which structures are developed, creating our diamorphic species
Aka, you start as a blank slate then your DNA programs the instructions for production.
And thats where I disagree, simple terms do not lead to better understanding. You do seem to have some sort of emotional investment in Laci, so this seems to be going nowhere. I will reiterate, why be inaccurate when explaining science to a layman? its crap like this that led to the myth in the first place. Explaining something using terms like this reinforces the myth, the world becomes a slightly more ignorant place. Well done everyone.
I will admit though, at least DNews does have some quality checks, unlike Mtv these days...
Because in a simpler term, a female does not have a bulge below. Which if you look at a foetus before it underwent further growth it does look like a female foetus. Nothing is wrong, it is a visual representation. I can clearly understand what she meant with or without scientific knowledge. Visual description does not infer that she is saying all foetus are female. Also, how does describing something that look like female shown imprecision? One might argue that it is a precise visual representation of a female foetus.
Information can be misinterpret no matter how they present it. The problem is not the source, but people themselves. That is why people ask question when they have doubts. However accusing someone saying something they did not shows a lot about your arguments.
Why attribute male/female terms to something that at, 8 weeks, looks like a blob with vestigial stumps for limbs? Why refer to an exclusively female structure when no-gender applies? Can you not see how easily this information can be misinterpreted by someone who uses DNews as a primary science source?
The problem is, if you dumb down scientific knowledge, understanding is lost. Laci is somewhat of an authority figure, as is Trace and the other guys. Why muddy the water by being inprecise?
why are guy nipples always shown and girl nipples always censored? better yet, why does every american tv show and movie have uncensored regular male nudity where any tv female nudity is censored and movie female nudity changes the rating to R and gets a mention in the MPAA warning?
Welcome to the USA.
In Europe it is fortunately not so bad.
Where I do not like these double standards.
Breast is breast, even in sensibility both are identical.
The attracted behavior diverges between the sexes.
Therefore, the breast is also an erogenic zone in men.
Incidentally, another reason for lactation in men would be breast cancer.
Therefore, 5% of all breast cancer cases are also attributed to men, whose mortality in this type of cancer is much higher than that of women.
Mainly due to the lack of early detection, breast cancer is usually recognized by the man only when the cancer itself has already massively scattered.
my first sexual experience was a female dog. I remember it well,, like this video, the swollen pussy, the warm passionate thrusting, taking my time like this guy does to make sure both have a good time. Watching the pussy stretch as it does, it feels so good to do it, and watching this video brings me right back to those early years of having sex with my dog. Definately worth watching a few times. The dog is very well experienced at this you can tell. She is in heat an wants her master to take care of her. I know she is waiting to feel his load pump into her. A beautiful great dane. I would love to have a dog like this one. Her master is making love to his pet and its the way it should be in every man and animal sex encounter.
I feel like Evolution should've taken the nipple away though, but everybody has nipples even though they're only important for a little over half.
With evolution in mind, I think that the male nipple is supposed to act as a pacifier for the infant, so that a male can also partake in child rearing.
wrong, the clitoris is proof that woman was created from man. The urethra position in women is directly under the clitoris, whereas it passes through the penis. How then can someone that studies the human anatomy not marvel at the differences between men and women?
As far as I'm aware, in almost all primate species the males have nipples. I don't know it that's true of other animal groups, but with the primates you can usually tell because the nipples are easy to spot (for the most part). If other animal families don't have male nipples, perhaps the real question should be why do male primates have nipples, but not other male animals?
Biological sex developed when all life on earth was single celled. Before that they were asexual, being neither male or female. As another user pointed out, human embryos are initially neither, and it's hormones that govern development.
All human embryoes are androgynous not female by default. Its just pure laziness to explain it as such. For example, female embryos exposed to high levels of testosterone in the womb can develop male structures, and vise versa. You start as a basic blueprint, then the trimmings get added later
Actually when a baby is a fetus you do not have a clitoris or labia they just look like that, the area where the vagina would be has no opening and is just a crater but will pop up like a bubble forming the scrotum and the penis/clit is too thin to be a penis but too long to be a clitoris so if you end up becoming female the penis/clit will shrink becoming a clitoris but if you end up being male the penis/clit won't change but just become thicker and slightly longer. also if you are female the little crater that is mistaken for labia will separate becoming the vagina.
+Phoenix Bush So you started the denouncement. And the other guys are your opponents. So all of you guys are having a Social World War I here!! Facts vs Logic vs Studity. There is no clear winner in my opinion cuz All of you are right.. right about rape, unprepared of outside, bros and stuffs.. Oh well.. Its time to run back to my bunker and wont hear any relplies to my comment. Good Bye. P.S. ITS A DRAWWW
+Phoenix Bush Capitalize the first letter of every sentence, "com" is spelled come.
You haven't won at all. You haven't yet beat the disease of Feminism. I'm telling you, you need to take your non misleading facts to get over this!
Marin Community Foundation and Asian Americans/Pacific Islanders in Philanthropy.
Overall, US-born Muslims make up the largest percentage at 34% of all Muslims in the Bay Area, followed by 14% born in Pakistan, 11% in Afghanistan, 10% in India, 3% in Egypt and 2% each in Iran, Jordan, Palestine and Yemen.
Silicon Valley Pakistani-American by the Numbers:
There are 35,000 Pakistani-born Muslims in San Francisco Bay Area, or 14% of the 250,000 Muslims who call the Bay Area home, according to the study. Bay Area Muslim community constitutes 3.5 percent of the area’s total population and is one of the highest concentrations of Muslims in the country.
As of 2013, South Asian Muslims, including Pakistanis, have the highest income levels, with nearly half (49%) of them having a household income above $100,000. In comparison, those groups with the lowest proportion of household incomes above $100,000 were Hispanic Muslims (15%), Afghans (10%), and African American Muslims (10%).
The Bay Area Muslim community is very diverse in terms of race and ethnicity:
South Asians (30%)
African Americans (9%)
Asian/Pacific Islanders (7%)
Based on the survey findings, the majority of Muslims live in the following three counties:
and Contra Costa (12%)
Thousands of Pakistan-born techies are working at Apple, Cisco, Google, Intel, Oracle and hundreds of other high-tech companies from small start-ups to large Fortune 500 corporations. Pakistani-Americans are contributing to what Erik Brynjolfsson and Andrew McAfee describe as "The Second Machine Age" in a recent book with the same title.