Cigarette Smoking Affects My Health

　 　 John started smoking when he was very young. At the beginning, he did it for fun, but some time later, he became an addicted smoker, and his health began going downhill. He's not alone - for people who smoke more than 20 cigarettes daily are more likely to have frequent coughs, chest pains and other troubles. Smoking also has been associated with mental health conditions. Youngsters who smoke cigarettes regularly have been shown to have more difficulty concentrating their mind on what they are doing. According to a survey, teen smokers are more likely to be absent-minded in class than non-smoking teenagers.