title: [Lung age in smokers, past smokers anid non second-hand smoke].
abstract: "Lung age" calculated from the height, sex, and 1-second forced expiratory volume is a new index to express the respiratory function. We assessed the differences in the lung age among smokers, past smokers, and non-smokers. The subjects comprised 886 Japanese who visited the Shimbashi Medical Checkup Office at Jikei University Hospital. The smokers (n=215), past smokers (n=300), and non-smokers (n=371) were classified. In the smokers, the number of cigarettes smoked per day was 19.7+/-9.8, and the period of smoking was 27.5+/-9.4 years. The non-smokers were divided into those in the presence or absence of second-hand smoke. The lung age added to the calendar age was 9.8+/-14.7 years in smokers, 4.8+/-17.8 years in past smokers, and -0.8+/-14.0 years in non-smokers. These data showed significant differences(p= 0.0003). The smoking index was calculated from smoking years multiplied by the cigarette number per day. The lung age with a smoking index >or=600 was 13.2+/-14.9 years, being significantly higher than that (7.2 +/-14.0 years) with a smoking index <600 (p=0.003). In the non-smokers, the lung age was -0.5+/-12.8 years in the presence and -1.0+/-14.1 in the absence of second-hand smoke. In conclusion, smoking increases the lung age.
authors.affiliation: Shimbashi Medical Checkup Office, Jikei University Hospital,Tokyo, Japan. t_wada@jikei.ac.jp
authors.forename: Takashi
authors.initials: T
authors.lastname: Wada
mesh_terms: D000328:Adult; D000375:Aging / Q000502:physiology*; D044466:Asian People; D015992:Body Mass Index; D005260:Female; D005541:Forced Expiratory Volume; D006801:Humans; D008168:Lung / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D012907:Smoking / Q000009:adverse effects*; D000074606:Smoking Prevention; D013997:Time Factors; D014028:Tobacco Smoke Pollution / Q000009:adverse effects* / Q000517:prevention & control
chemical_list: D014028:Tobacco Smoke Pollution