How Smoking is Injurious to health t is known to everyone that cigarette smoking is harmful and addictive. But very few know the risks of cigarette addiction. Smoking inflicts body with many irreversible damages and reduces the human life span by 25 years. Effects of Smoking on Body: Heart : Smoking is the biggest risk factor for all heart diseases. It accelerates the process of fat deposition in the inner walls of arteries (atherosclerosis). It increases blood pressure and heart rate. Not only these, smoking increases tendency for the blood to clot. It reduces the capacity of a person to exercise. (Exercises always keep heart healthy). Lungs : Smoking destroys small hairs present in upper parts of airways. In normal persons these hairs protect lungs from germs, dust and other harmful particles. When this natural cleaning system is damaged germs, dust, smoke and other harmful chemicals enter lungs causing infection, cough and lung cancer. The air sacs of lungs (alveolar) get per...