Birth order and breast cancer risk

  title={Birth order and breast cancer risk},
  author={Chung-Cheng Hsieh and Anastasia Tzonou and Dimitirios Trichopoulos},
  journal={Cancer Causes & Control},
It has been hypothesized that prenatal exposure to maternal estrogens may be a risk factor for breast cancer in the offspring. In two recent studies, maternal estradiol levels in the first pregnancy have been compared to those in the second, and in both studies levels were higher in the first pregnancy. If both the hypothesis and the reported findings were true, women born as their mother's second child would be expected to have lower risk for breast cancer than first-born women. Data from 1… CONTINUE READING

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Breast and Gynecologic Cancer Epidemiology

  • KetseyJL, NG Hildreth
  • 1983

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