The
impacts of smoking are already clearly known. Many researchers prove
that habit of smoking increases the risk of the various diseases, such
as heart disease, lung cancer, breast cancer, cervical cancer, throat
cancer, cancer of the oesophagus, mouth cancer, kidney cancer,
gastrointestinal cancer, impotence, coronary heart disease, and other
medical disorder.
It is known that
90% of lung cancer caused by cigarette because the smoke inhalation
entirely goes into the lungs. A cloud of cigarette will stimulate cell
growing abnormally into the lungs. It is estimated that one of ten
moderate smokers and one of five heavy smokers will die because of lung
cancer.
A woman who smokes has more
risk of developing breast cancer. The study shows women who start
smoking at the age of 20 years and five years before she is pregnant for
the first time has a greater risk to breast cancer. About 30 % of death
of people who suffer cervical cancer are caused by smoking because the
women who start smoking are more vulnerable to the sexually transmitted
infection by a virus.
The study found
that cigarette smoke damages DNA from cells of the oesophagus so that
it causes cancer of the oesophagus. About 80 % cases of oesophagus
cancer have been associated with smoking. Although cigarette smoke
enters into the lungs, but there is some smoke ingested so it increase
the risk of gastrointestinal cancer.
When
someone smokes, the smoke that contains nicotine and tobacco will enter
into the body. Nicotine along with other dangerous chemicals such as
tar and carbon monoxide cause changes in heartbeat, breathing
circulation, and blood pressure. Carcinogens that screens out of the
body through the kidneys also change a DNA cell and damage kidney cells.
This change affects kidney function and triggers cancer.
Smoking
is the main cause of mouth cancer. Smokers are known that they have six
times greater possibility to experience mouth cancer compared to those
who do not smoke, and people who smoke with smokeless tobacco are at
risk of 50 times greater. The inhaled smoke of a cigarette before
entering into the lungs will pass through the throat so this will relate
to cigarette cancer.
Nicotine in
cigarette smoke causes the heart works faster and increases blood
pressure, while carbon monoxide takes oxygen in the blood more that
makes the heart pump more blood. If the heart works too hard and high
blood pressure, thus it can cause a heart attack. Most of coronary heart
diseases are caused by cigarettes and will deteriorate if they have
other diseases as diabetes mellitus.
For
men at age of 30s and 40s years, smoking can increase the risk of
erectile dysfunction about 50 percent because smoking can damage blood
vessels, nicotine narrows the arteries so it reduces the flow of blood
and blood pressure to the penis. If a person already suffers impotence,
then it can be an early warning that cigarettes are destructive for
other regions of the body.
Some
medical interference can also be caused by cigarettes such as high blood
pressure (hypertension), a disorder of fertility, aggravate asthma and
inflammation of an airway, runs the risk of higher experienced macular
degeneration (loss of sight gradually), a cataract, become more frequent
sick, rise stain on the teeth and the gums, develop thrush in the
intestines.
From the arguments above, it is obvious that various diseases can appear because of smoking. The compounds of cigarette are not good for our body. There may be many other harms of smoking. Smoking is harmful for our health.
Thank you very much.
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