Health and Medicine

Smoking is injurious to health : Second hand smoking is a mixture of the smoke that comes from the burning end of a cigarette , cigar , or , pipe , and the smoke breathed out by the smoker. It contains more than 7,000 chemicals , hundreds of those chemicals are toxic and about 70 can cause cancer. Health effects of secondhand smoke include : Ear infections in children More frequent and severe asthma attacks in children Heart disease and lung cancer in adults who had never smoked There is no safe amount of secondhand smoke. Even low levels of it can be harmful. The only way to fully protect nonsmokers from secondhand smoke is not to allow smoking indoors. Secondhand smoke is associated with disease and premature death in non smoking adults and children. Exposure to secondhand smoke irritates the airways and has immediate harmful effects on a person's heart and blood vessels. It increases the risk of heart disease by about 25 to 30%. exposure to secondhand smoke also increases the ri...