Smoking is The root cause of Respiratory diseases. Respiratory infections often seen are many times more common than chronic bronchitis,pneumonia Lung cancer.smoker Lung cancer 8 to 20 times higher.If nicotine is the quality of education ,carbon dioxide Reduces The oxygen percentage in The blood. Smoking causes hyper acidity peralisis ,heart attack etc. Bronchitis, food tube due to tobacco digestion colon oral cavity tobacco products related. Those who drink cigarettes are likely to gain some weight. Ones smoke is caused by Inhaling disorders. (All of you Live Happily). Vanga Akki-viswanadh(Editor).