Smoking Can Increase Depressive Symptoms in Teens While some teenagers may puff on cigarettes to 'self - medicate' against the blues, scientists at the University of Toronto and the University of Montreal have found that smoking may actually______【51】depressive symptoms in some teens. 'This observational study is one of the few to examine the perceived______【52】benefits of smoking among teens,' says lead researcher Michael Chaiton, a research associate at the Ontario Tobacco Research Unit of the University of Toronto. '______【53】cigarettes may appear to have self - medicating 【54】______or to improve mood, in the long term we found that teens who started to smoke reported higher depressive symptoms. ' As part of the study, some 662 high school teenagers completed up to 20 questionnaires 【55】______their use of cigarettes of affect mood. Secondary schools were selected to provide a mix of French and English participants, urban and rural schools, and schools 【56】______in high, moderate and low socioeconomic neighborhoods. Participants were divided into three 【57】______: never smokers smokers who did not use cigarettes to self - medicate, improve mood or physical 【58】______smokers who used cigarettes to self - medicate. Depressive symptoms were measured u-sing a scale that asked how often participants felt too tired to do things had 【59】 ______going to sleep or staying 【60】______ felt unhappy, sad, or depressed felt hopeless about the future felt vexed, antsy or tense and worried too much a-bout things. 'Smokers who used cigarettes as mood 【61】______had higher risks of elevated depressive symptoms than teens who had never smoked,' says co -researcher Jennifer O'Loughlin, a professor at the University of Montreal Department of Social and Preventive Medicine. 'Our study found that teen smokers who reported emotional benefits from smoking are at higher risk of 【62】______depressive symptoms. ' The 【63】______between depression and smoking exists 【64】 ______among teens that use cigarettes to feel better. 'It's 【65】______to emphasize that depressive symptom scores were higher among teenagers who reported emotional benefits from smoking after they began to smoke,' says Dr. Chaiton. (51)