Why Men Have Nipples ? :)

There seems to be a
logical explanation about
why women have nipples
- for babies. But why do
men's bodies retain what
appears to be redundant
body parts? The Darwinian
natural selection process
would seem to dictate
that male nipples really
should not be there. So
what's the deal? Why do
men have nipples?
The answer is that as
embryos men and women
have similar tissues and
body parts. If anything the
embryo follows a 'female
template'. That is why
nipples are present in both
sexes. It is the effect of the
genes, the Y chromosome
and the hormone
testosterone that brings
about the changes and
masculinises the embryo.
Testosterone promotes
the growth of the penis
and testicles. Because
nipples are there before
this process begins the
nipples stay!
Nipples and breast tissue
have no function as such
except for perhaps
protecting the heart and
lungs from injury.
Male Breasts Can
Produce Milk and Get
Breast Cancer
A certain level of the
female hormone estrogen
is present in all men. If, as
a result of disease or a
condition affecting
hormones, breast tissue in
men can grow
( gynecomastia- abnormal
enlargement of breasts,)
and men can produce
milk.
Gynacomastia is more
commonly seen in
adolescence, a period in
development when
hormones fluctuate a lot.
It is also seen in some
men with liver disease and
sometimes in alcoholics.
Men can get breast cancer
as well as women.