
Oladapo Ashiru
From sociological studies, the
fact that humans make love facing each other indicates a communication
of direct sexual interest and development of love, permanent mating and a
family system.
On the contrary, throughout the animal
kingdom, the female squats in her position of ‘heat’ and the male mounts
on top of her, facing her rear end. The animals never get to look at
each other and do not need to know each other or get emotionally
involved for intercourse to take place. In other words, in animals, sex
is not emotional but procreational.
For humans, having sex is about
expressing emotions and not just for the purpose of having babies. This
makes us less reproductively efficient.
Male reproduction
The reproductive system of the human
male is also highly inefficient. Most male animals produce 25 million
sperms per day per gram of testicular tissue. Humans produce only four
million sperms. Only the gorilla, the cheetah and the goose produce less
sperm per gram and testicular tissue than us!
To illustrate the importance of sperm
per gram of testicular tissue, the average bull ejaculates about 10
billion sperms, whereas the average fertile man’s ejaculation would
contain between one and five billion sperms. This means that the average
bull in a single ejaculation produces 30 to 100 times more than that of
the average man.
The bull’s sperm will also move three
times the speed of the human sperm, in a perfectly straight line, with
virtually no abnormal, weak or deformed sperms. A man whose ejaculation
has 60 per cent of the sperm moving is lucky. Studies on sperm
population find that up to 40 per cent of a man’s sperm are abnormal.
Take the pig as an example to really
show superior fertility! The pig ejaculates an entire pint of sperm on
having sex with the sow. Its orgasm will take a full half hour. Compare
this to a mere 120 seconds for most men. In addition, the pig has little
screws like grooves on the end of its penis that fit into a similar
groove in the cervix of the female. This guarantees that no sperm will
leak during intercourse. The amount of sperm in a single pig’s
ejaculation is about 400 times higher than the amount of sperm in a
single human’s ejaculation, and none is lost. In most animals, the sperm
cells, as they mature from stage to stage, are arranged in perfect
order. This is not so in humans whose sperm cells mature in a
helter-skelter fashion, according to histologists.
Human sperm count so poor
Several factors have been blamed for the
low sperm count in men. One of these is stress. It has been well
documented that modern life can have a negative impact on reproduction.
Many sperm banks in Europe, America and here in Lagos get medical
students or other professional students to donate sperms. It is not
unusual for good donors with high sperm count on one occasion to have a
poor sperm count on the next occasion, if the donor is having an exam.
There was a case in the University of
California where a donor’s sperm count went literally to zero. It was
only a close interview that revealed that this student was going through
a bout of depression, thinking that his life was falling apart.
There are cases of infertility with low
sperm count from the husband. When the couple goes on vacation, the wife
gets pregnant because of the change in the environment, which removes
the male stress factor.
Hazardous substances
There are several factors in the
environment that have terrible effects on the sperm. To make the
situation worse, many of these substances have not been thoroughly
documented, researched or accounted for. In a village in China in the
early 1920s, for instance, they discovered that fertility was on the
decline and the women were not getting pregnant. Suddenly, in the 1930s,
the sterility was reversed and the people started having children
again. The villagers thought that the curse placed on them had been
lifted. It was later they realised that the sterility was due to change
in cooking oil.
The use of cheap crude cottonseed oil
for cooking created the sterility in men. It was found that the crude
extract contained a chemical called gossypols that causes male sterility
and has now been used as a male contraceptive. A good number of these
were discovered by accident, while there are several out there that are
yet to be discovered.
There are possibly many herbs or fruits
that contain gossypol-like substances that the Nigerian population eats
and which we do not know about.
Sexually transmitted diseases
Research shows that about 10 percent of
human infertility is caused by tubule obstruction, and this is usually,
although not always, caused by infectious diseases transmitted sexually.
One third of African men are sterile because of epididymal obstruction
caused by STDs.
For example, gonorrhoea causes
irreversible tubule blockage. This type of infertility caused by STDs
requires the most complex medical treatment, which includes new methods
of assisted conception or reproductive technology.
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