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Actually, the reason men have nipples is because both males and females must carry enough DNA to reproduce humans of both genders. So both males and females have the stem cells needed for growing breasts. But since only females have ovaries, generally only maturing and adult females produce enough estrogen to cause their breasts to grow. Males can on occasion develop fully-mature breasts, and that's usually due to a hormone imbalance or due to medication.
What else can I help you with?
Why do humans have nipples?
Humans have nipples because they develop in the womb before the sex of the baby is determined. Both males and females start with nipples, but only females use them for breastfeeding.
Why do males have nipples from an evolutionary perspective?
Males have nipples from an evolutionary perspective because nipples develop in embryos before the sex of the individual is determined. In mammals, including humans, nipples are a common feature that develops in all embryos, regardless of their eventual sex. This is because nipples are essential for feeding newborns, and it is more efficient for evolution to maintain nipples in both males and females rather than developing a separate system for males.
Do horses have nipples and if so, how do they differ from other mammals?
Yes, horses have nipples. They are similar to other mammals in that they are used to nurse their young. However, unlike some other mammals, horses have only two nipples, located on the mare's underside.
Humans are born with how many kidneys in there body?
Human body has two kidneys
Do only mammals have nipples?
No, not only mammals have nipples. Nipples are also found in some other animals, such as birds and some reptiles.
Why do Asian's have nipples?
They're humans... Humans have nipples..
Why do humans have nipples?
Humans have nipples because they develop in the womb before the sex of the baby is determined. Both males and females start with nipples, but only females use them for breastfeeding.
How old does a girl have to be before she gets nipples?
All healthy humans are born with nipples.
How many nipples can you have?
Humans typically have two nipples, but variations can occur due to genetic factors, such as supernumerary nipples, which can result in individuals having more than two. In rare cases, some people may have additional nipples or variations depending on their genetic makeup. Animals also exhibit a wide range of nipple counts, often corresponding to the number of offspring they typically bear.
Can humans have more than 2 nipples?
Yea they can.
Why dont you have any nipples?
depends, do you mean they are REALY flat or you actually have no nipple??
Which gender develops first?
In the development of humans, the default is female. That is the reason that all humans have nipples.
Why girls have hair on their nipples?
Humans are mammals; we have hair all over.
Why do some people have hairy nipples?
Humans are still evolving, and because of that, some people have traits that have mostly disappeared by now, such as thick hair all over their bodies. Many species of mammals have more than two nipples, and it is possible that at some earlier time, proto humans had more than two nipples. Because humans very rarely have multiple births, more that two nipples are not necessary, so we are evolving away from that trait. That is my personal opinion, and I can not back it up with any factual evidence, so don't take it as a fact.
Why don't some girls have nipples?
All humans, both male and female, have nipples. The only way a person will not have nipples is if they have been surgically removed. If someone should be born without nipples (either male or female) this is an abormality. Related link: http://en.wikipedia.org/wiki/Nipples
Are nipples inferior to the shoulders?
In humans, yes. ("Inferior" in this sense means "below", and if your nipples are above your shoulders, that's a pretty serious birth defect.)
Does harry from 1 direction have 4 nipples?
no. he has 2 with two birthmarks that resemble nipples.
