title: [Occupational hazardous substance exposure and nutrition. Risk factors for mouth, pharyngeal and laryngeal carcinomas?].
abstract: OBJECTIVE
  A case-control study was conducted to investigate occupational and other risk factors for squamous cell carcinoma of the oral cavity, the pharynx and the larynx. The study included 209 male cancer patients and 110 male control persons without known malignant disease, matched for age, alcohol consumption and tobacco consumption.
  
  
  METHODS
  Cases and controls were interviewed using a standardized questionnaire which has been used before in the Heidelberg case-control studies.
  
  
  CONCLUSIONS
  The educational level in the cancer group was significantly lower (p < 0.001). 17.2% of the cancer patients and 7.3% of the control persons had not completed their professional training. The percentage of so-called "blue-collar workers" was significantly higher in the cancer group (20.9% vs. 7.3%; p < 0.002). An increased cancer risk was observed for workers exposed to asbestos (OR = 8.7; p = 0.004) and cement dust (OR = 12.9; p < 0.001). A frequent consumption of various vegetable food like carrots (OR = 0.17; p < 0.001), fruits (OR = 0.38; p < 0.001) or green salad (OR = 0.25; p < 0.001) was associated with a significant reduction of cancer risk.
authors.affiliation: Abteilung Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie, Bundeswehrkrankenhaus Ulm, Oberer Eselsberg 40, 89081 Ulm.
authors.forename: H
authors.initials: H
authors.lastname: Maier
authors.forename: M
authors.initials: M
authors.lastname: Tisch
authors.forename: H
authors.initials: H
authors.lastname: Kyrberg
authors.forename: C
authors.initials: C
authors.lastname: Conradt
authors.forename: H
authors.initials: H
authors.lastname: Weidauer
mesh_terms: D000328:Adult; D000368:Aged; D000428:Alcohol Drinking / Q000009:adverse effects; D002294:Carcinoma, Squamous Cell / Q000209:etiology* / Q000517:prevention & control; D016022:Case-Control Studies; D005247:Feeding Behavior; D005858:Germany; D006801:Humans; D007822:Laryngeal Neoplasms / Q000209:etiology* / Q000517:prevention & control; D008297:Male; D008875:Middle Aged; D015596:Nutrition Assessment; D009784:Occupational Diseases / Q000209:etiology* / Q000517:prevention & control; D016273:Occupational Exposure / Q000009:adverse effects*; D009959:Oropharyngeal Neoplasms / Q000209:etiology* / Q000517:prevention & control; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects; D012959:Socioeconomic Factors