一、吸烟对人体有哪些危害? 根据国内外的研究和流行病学调查,吸烟对人体的危害是较大的,吸烟是癌症尤其是肺、喉、口腔癌、慢性气管炎、肺气肿等疾病的重要病因,对胃十二指肠溃疡、糖尿病性肾病、流产、死胎、新生儿发育等 First, the smoking on the human body what harm? According to domestic and foreign research and epidemiological investigations, the harm of smoking on the human body is larger, smoking is cancer, especially lung, throat, oral cancer, chronic bronchitis, emphysema, etc. Important causes of disease, gastroduodenal ulcer, diabetic nephropathy, miscarriage, stillbirth, newborn development, etc.