Inspite of several warning and advices, many people still smoke cigarettes. Other than causing irrreversible damage to their own body, smokers pollute the enviornment and also cause several diseases to non-smokers. Oxygen is very important for all living organisms and good quality of the oxygen flow decides the energy release, working of metabolism, and even burn of nutrient. The breathing of oxygen and release of carbon-dioxide is normally performed by the respiratory system.
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Smoking is very injurious to health and tobacco contains harmful chemicals that interrupts the respiratory system. The harmful chemicals here include tar, carbon monoxide, radioactive compounds, hydrogen cyanide, metals, and free radicals. The craving for tobacco increases and aggravated and this become really painful when a person attempts to give up smoking. Though a person may give up smoking through counseling and other ways, it takes so many years for the respiratory tract to rehabilitate.
Smoking also causes different types of cancer, especially it causes lung, mouth, and throat cancer. Studies have revealed that tobacco also causes chronic bronchitis, a condition that makes breathing very difficult. Women who have the habit of smoking especially during pregnancy have miscarriges and still birth. Smoking also introduces some tar particles inside the respiratory system and these are the sticky substance that affects not only finger nails and teeth, but also affect delicate lung tissue.
Most importantly some components in tar is found to be the cancer trigger. Other than this, hydrogen cyanide affects lung clearance system. Also, these harmful chemicals damages heart and blood vessels, and this can lead to stroke and heart disease.