experience short term consequences of smoking studies early signs http://www.who.int/tobacco/research/youth/health_effects/en/ short term consequences of smoking Impact of smoking on young healthy adults World Health Organization http://www.who.int/tobacco/research/youth/health_effects/en/ http://www.who.int/tobacco/research/youth/health_effects/en/ short term consequences of smoking World Health Organization Impact of smoking on young healthy adults سیگار کشیدن http://www.who.int/tobacco/research/youth/health_effects/en/ short term consequences of smoking fact http://www.who.int/tobacco/research/youth/health_effects/en/ http://www.who.int/tobacco/research/youth/health_effects/en/ adults who started smoking in their teens have short term consequences of smoking Dangers of Smoking at a Young Age