论文部分内容阅读
美国每年支付的与吸烟有关的医疗费用以及因丧失劳动力所造成的损失远远超过550亿美元。吸烟是慢性支气管炎和肺气肿的主要诱因,此外还影响正常人和肺病患者的肺功能。在西方,含有咖啡因饮料的消费量很大。在中国,由于各种“可乐”的出现,咖啡因饮料也随之涌进千家万户。从目前来看,咖啡因对健康的影响是难以估计的。国外在1987年就有研究资料认为,咖啡因对支气管哮喘病人有较强的支气管舒张作用。最近,巴西以利马教授为首的研究小组,为了证明足量咖啡因能否预防急性和慢性气道的阻塞、延缓慢性支气管炎和肺气肿的发病,开展了一系列非常有趣的实验。他们对10名自愿受试者(其中包括非吸烟者)在吸烟前及吸一支卷烟2分钟、7
The annual smoking-related medical costs paid by the United States and the losses caused by the loss of the workforce far exceed 55 billion U.S. dollars. Smoking is the main cause of chronic bronchitis and emphysema, in addition to affecting lung function in patients with normal and lung disease. In the West, consumption of caffeinated beverages is significant. In China, as a result of the emergence of various “coke”, caffeinated beverages have poured into every household. For now, the health effects of caffeine are unpredictable. Abroad in 1987 there is research data that caffeine on bronchial asthma patients have a strong bronchial relaxation. Recently, a team led by Prof. Lima of Brazil conducted a series of very interesting experiments in order to prove that enough caffeine can prevent acute and chronic airway obstruction and delay the onset of chronic bronchitis and emphysema. 10 volunteers (including non-smokers) before smoking and smoking a cigarette for 2 minutes, 7