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. 1991 Dec 18;83(24):1820-6.
doi: 10.1093/jnci/83.24.1820.

Nonviral risk factors for hepatocellular carcinoma in a low-risk population, the non-Asians of Los Angeles County, California

M C Yu  1 , M J Tong, S Govindarajan, B E Henderson
Affiliations

Nonviral risk factors for hepatocellular carcinoma in a low-risk population, the non-Asians of Los Angeles County, California

M C Yu et al. J Natl Cancer Inst. .

Abstract

We conducted interviews on 74 patients with histologically confirmed hepatocellular carcinoma. These patients, aged 18-74 years, were black or white residents of Los Angeles County. We also interviewed 162 population control subjects who were comparable to the case patients by age, sex, and race. Cigarette smoking was a significant risk factor for hepatocellular carcinoma [relative risk (RR) = 2.1; 95% confidence limits (CL) = 1.1, 4.0]; the effects were similar in men and in women. Heavy alcohol consumption was another risk factor for hepatocellular carcinoma in men; men who consumed 80 g or more of ethanol per day had an RR of 4.7 (95% CL = 1.4, 15.4) relative to those who had never drunk alcohol on a weekly basis. The level of alcohol intake was relatively low in women, and no significant effect on risk of hepatocellular carcinoma was observed. Use of oral contraceptives was significantly related to risk of hepatocellular carcinoma in women (RR = 3.0; 95% CL = 1.0, 8.8); those who were exposed for more than 5 years exhibited a 5.5-fold increased risk (95% CL = 1.2, 24.8). The effects of these three risk factors on hepatocellular carcinoma development were independent of each other and independent of serologically determined viral hepatitis. Our data suggest that cigarette smoking, alcohol consumption, and use of oral contraceptives are major risk factors for hepatocellular carcinoma among non-Asian residents of Los Angeles County. We also observed a significant association between a history of diabetes and hepatocellular carcinoma (RR = 3.3; 95% CL = 1.5, 7.2), especially among those who had received insulin treatment (RR = 18.5; 95% CL = 2.2, 156.0). This association may have etiological significance.

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