Smoking damages the natural cleaning mechanism of the lungs and also poisons the cells that line the lungs. Tobacco smoke paralyzes the tiny beating hairs inside the air passages of the lungs. These hairs normally clean out any material that is inhaled. Tar from the smoke accumulates inside the lungs, together with small grains of soot and chemicals that can somtimes cuse cancer. These substances are absorbed into the blood and can cause damage to the heart and circulation.
Regular smoker often suffer from lung diseases such as bronchitis, which are caused by tobacco smoke.
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