烟能使心跳加快、血压增高,加重心脏负担,促使动脉硬化。烟雾进入呼吸道,可引起慢性喉炎、慢性支气管炎。嗜烟者比不吸烟者肺癌的发病率要高倍。长期吸烟还可以使人先兴奋随即发生抑制,引起疲劳、失眠、手抖、记忆力减退。吸烟有弊无利,应当戒绝。酒可抑制中枢神经系统,引起酒精中毒,也可 Smoke can make rapid heartbeat, blood pressure, increased heart burden, promote atherosclerosis. Smoke into the respiratory tract, can cause chronic laryngitis, chronic bronchitis. Smoking smokers than non-smoker lung cancer incidence rate times. Long-term smoking can also make people excited immediately before the suppression occurs, causing fatigue, insomnia, hand tremor, memory loss. Smoking has both disadvantages and disadvantages and should be set free. Alcohol can inhibit the central nervous system, causing alcoholism, but also