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Health Effects of Smoking – How Smoking Affects the Body?

According to World Health Organization (WHO), there are about 1.1 billion smokers in the world, 800 million are in the developing world (nearly three times as many as in developed countries).

Everyday, over thousand of people around the world are dying from disease cause by smoking. This makes clear that smoking is one of the main causes of death.

Tobacco smoke contains a substance called nicotine, a poisonous volatile alkaloid, and other harmful substances such as acrolein, ammonia, carbon monoxide, prussic acid, tars and a number of aldehydes. About 4000 chemicals contained in tobacco that when heated will produces many substances that can cause irreparable damage to health.

The effects of smoking on each person is different depends on the age when the person first started smoking, the vulnerability of a person to the chemicals in tobacco smoke, the number of cigarettes smoked per day, and the number of years the person have been smoking. The following are some health effects of smoking to the body:


Smoking causes chronic obstructive pulmonary disease (COPD), a group of diseases that includes asthma and bronchitis, chronic bronchitis, and emphysema. COPD is a progressive disease that makes a person hard to breathe. Many smokers do not know that they have been affected until it’s too late. There is no cure for this disease and no way to reverse the damage. About 10% to 15% of smokers will develop COPD.


Nicotine in tobacco smoke may causes the blood pressure increased and blood clot easily. Carbon monoxide steal the blood oxygen and lead to the development of cholesterol stored in artery walls. All of these increased the risk of heart attack.

Blood Circulation

Smoking can causes the arteries and blood vessels to tighten which may lead to several problems such as:

  • Cramps and pain in your arteries that can cause strokes and heart attacks.
  • Gangrene which lead to amputations.
  • Low fitness, cold skin, hands and feet, and ulcers.

Reproduction and Fertility

Effects of smoking on reproduction and fertility are serious. Smoking can increase the risk of impotence, damaging sperm, reducing sperm count and cause testicular cancer.

Mouth and Teeth

Smoking causes unattractive problems like bad breath and stained teeth. It also can cause gum disease and damage to your sense of taste. The most serious effect of smoking to this area is an increased risk of developing cancer in your tongue, throat, and lips.


Smoking reduces the amount of oxygen to the skin. That’s means smoking may speed up the aging of your skin.


Smoking can cause bones getting weak and brittle. Women who smoke are 5-10% more likely to suffer from osteoporosis than non-smokers.


Smoking can lead to several eye diseases such as age-related macular degeneration, cataracts, glaucoma and graves’ ophthalmopathy. The worst effect of smoking in this area is that it can cause permanent blindness to the eyes.


Smoking may increased the chance of developing stomach cancer or ulcers and the risk of developing cancer of the pancreas, kidney and bladder.

Smoking is not only harmful to yourself but also people around you. People who breathe in the smoke exhaled by the active smoker are also have an increased risk of getting lung cancer and heart disease. So quit smoking now!