Smoking is the most important and preventable
cause of morbidity and premature mortality in the developed and developing
world. However, despite extensive efforts to curb smoking worldwide, the
cigarette industry is still flourishing in many regions of the globe.
Worldwide, between tens of thousands of kids start smoking every day. Approximately one quarter of children alive in
the Asian Pacific Region will die from smoking.
Consequences of Tobacco Use.
Fifty percent of smokers die of a smoking-related
disease, and the life expectancy of one in four smokers is reduced by as much
as 15-20 years. Before the advent of widespread tobacco use in World War II,
lung cancer was rare. So rare, in fact, that doctors were required to report
cases of lung cancer to the federal government to help identify the local
environmental cause of the condition among an affected population, much like
reporting cases of mesothelioma today. Now, it is estimated that over 85
percent of all lung cancer is tobacco-related. While most people recognize that
smoking is highly destructive for their lungs, many have yet to come to terms
with how smoking affects the rest of the body. Damage to one’s skin, mouth,
hands, feet, respiratory system, heart, bones and reproductive system becomes readily
evident in long-time smokers. Areas of the body damaged by smoking include:
- Skin: Poor blood circulation due to chronic vascular
insults leads to impaired oxygen delivery to the skin, causing lasting
damage to collagen and epithelial tissue. This phenomenon also contributes
to poor wound healing, making elective surgeries risky and emergency
surgeries dangerous.
- Mouth: Smoking can contribute to bad breath, mouth and
jaw cancer, recurrent pharyngitis, and a reduced sense of taste and smell,
as well as stained, yellowed teeth and plaque. Smoking reduces the flow of
saliva, which, because saliva cleanses the lining of the mouth and teeth
and protects the teeth from decay and gum infection.
- Hands and feet: Poor circulation leaves hands and feet
chronically poorly perfused and cold. Walking can become painful due to
peripheral vascular disease induced by smoking which can even lead to
eventual amputation. The blood vessels in the fingers that hold cigarettes
can also become so severely impaired that gangrene can set in and lead to
amputation, forcing stubborn smokers to switch to the other hand.
- Respiratory system: Smoking can lead to lung cancer,
chronic bronchitis, continuous shortness of breath due to emphysematous
injury in chronic obstructive pulmonary disease (COPD), and persistent
cough often with pneumonia.
- Heart: No organ except for the lungs is more affected by
smoking than the heart and its circulation. Cigarette smoking by itself
increases the risk of coronary heart disease; a smoker’s heart is 2 to 4
times more likely to have coronary artery disease than that of a
non-smoker. When smoking acts with other factors such as diabetes, it
greatly increases this risk. Smoking increases blood pressure, decreases
exercise tolerance and increases the blood’s tendency to clot. Smoking
also increases the risk of recurrent coronary heart disease after bypass
surgery and raises the rate of abdominal aortic aneurysms fivefold.
- Bones: Osteoporosis, spine and hip fractures, and
degenerative disc disease can all be directly linked to smoking.
- Reproductive System: Infertility is often a complication
with chronic smokers, both male and female. While smoking lowers the sperm
counts and decreases sperm motility in men, women have impaired ovulation
and egg function. Maternal smoking is associated with several
complications of pregnancy including abruption placentae, placenta previa,
bleeding during pregnancy, premature and prolonged rupture of the
membranes, and pre-term delivery. Smoking during pregnancy also retards
fetal growth and causes an average reduction in birth weight. High levels
of nicotine have even been found in cervical mucus contributing to
cervical cancer.
- Malignancy: In addition to the malignancies mentioned
above, smoking also increases the risk of cancers of the throat,
esophagus, stomach, pancreas, kidneys, bladder, and colon and acute
myeloid leukemia.
Health Benefits of Smoking
Cessation.
The potential health benefits of smoking
cessation are substantial. Stopping smoking reduces the future risk of
tobacco-related diseases, slows the progression of existing tobacco-related
disease and improves life expectancy by an average of 10 years. Quitting can
bring immediate health benefits at any age, regardless of how long one has
smoked. It is never too late to quit. Within the first 24 hours of quitting, a
person’s blood pressure, heart rate, and peripheral circulation begin to
improve. The carbon monoxide content of the airways within the lung can
decrease to normal levels by the end of the first day.
By 48 hours, all nicotine has left the body and
the former smoker’s taste and smell are on their way to recovering. After 1 to
3 months, an ex-smoker’s lung function may have already improved by as much as
30 percent, and about 6 months later, shortness of breath has significantly
improved and that chronic “smoker’s cough” is becoming less of a daily
occurrence.
One year after cessation, the risk of a heart attack drops to half that of the risk of smokers. All else being equal, no other single intervention or modern “miracle drug” can make this claim. The risk of lung cancer falls by 50-60 percent after a decade of abstinence. After 15 years of abstinence, the risk of heart attack and stroke falls to that of people who never smoked.
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