It is still unclear as to the exact causes of hemorrhoids
but there are many theories which attempt to explain
this medical phenomenon.
We do know that pressure in the anal sphincter, which
is the muscle that sourrounds the anal canal, is more
than likely the culprit. However, it is not clear
if this pressure results in actually causing a hemorrhoid,
or if it is the pressure which enlarges an already
present hemorrhoid. If the latter is the case, then
straining or forcing a bowel movement, would more
than likely pull the hemroids
with the stool and the force of the stool, passing
through a tighter sphincter, would in essence enlarge
the hemorrhoid.
It is pretty certain that with existing hemorrhoids,
pressure in the anal area will simply make the condition
worse and will enlarge the hemorrhoid until it may
actually protrude from the anus. This is then known
as a prolapsed hemorrhoid. Enlarging a hemorrhoid
can also casue the hemorrhoid to rupture or tear which
in turn causes bleeding. Pressure may also cause anal
fissures, which is a tear in the anal canal. This
condition will also normally result in bleeding from
the rectum.
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Continuing on with the theory that pressure in the anus causes hemorrhoids to enlarge and presuming that this theory may also be the reason for hemorrhoids to occur in the first place, lets look at a number of lifestyle activities and possible causes for this pressure and the existence of hemorrhoids.
Not enough fiber - It is thought that not having enough
fiber in your diet will cause harder bowel movements
which will be more difficult to expel and therefore
produce pressure in the anal area.
Not enough fluid intake - Not drinking enough water
or any other fluids may also result in harder, more
compacted stools and this in turn, results in constipation
and would cause additional pressure in the anus.
Pregnancy - Constipation is very common in pregnancy,
and the act of giving birth will also cause tremendous
pressure in the area. It is very common for pregnant,
or new mothers to experience hemorrhoids.
Weight lifting or lifting heavy objects - This exerts
pressure on the sphincter. It is also thought that
other types of training and exercise will cause hemorrhoids
due to additional pressure from the extra physical
excursion.
Tumors - The existence of tumors in the pelvis cause
hemorrhoids to enlarge by pressing against veins which
drain upwards from the anal canal.
Myths
There are many myths surrounding the cause of hemorrhoids. These are some examples of factors which DO NOT cause hemorrhoids:
• Anal Sex
• Sitting on a hard, cold surface.
• Wearing a wet bathing suit
• Only older people get hemorrhoids
• Black pepper causes hemorrhoids
• Hemorrhoids cause cancer
Conclusion
It is important to remember that hemorrhoids are also thought to be a hereditary condition, therefore making some people more prone to hemorrhoids than others.
The exact cause of hemorrhoids is not known, but factors such as your diet and certain activities may result in the cause of hemorrhoids and will almost certainly assist the growth of already present hemorrhoids.
Bibliography
http://www.medicinenet.com
