American Journal of Epidemiology Vol. 135, No. 2: 142-152
Copyright © 1992 by The Johns Hopkins University School of Hygiene and Public Health
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Prospects for the Primary Prevention of Breast Cancer
From the Department of Preventive Medicine and the Norris Comprehensive Cancer Center, University of Southern California School of Medicine 1420 San Pablo Street, PMB A-202, Los Angeles, CA 90033
Reprint requests to Dr. Leslie Bernstein at this address
In this paper, the rationale, stage of development, and known or potential adverse effects of three potential strategies for the prevention of breast cancer are reviewed. Two methodsthe use of tamoxifen in postmenopausal women and the use of luteinizing hormone (LH)releasing hormone agonists in premenopausal womeninvolve hormonal manipulation. In the premenopausal period, the goal is to reduce the number of ovulatory menstrual cycles a woman experiences in order to reduce her exposure to estrogen and progesterone. Physical activity during adolescence is proposed as a nonhormonal method of accomplishing this. The use of LHreleasing hormone agonists to produce a reversible menopause can also reduce a woman's cumulative exposure to ovarian steroid hormones. Tamoxifen, which is effective in breast cancer therapy, provides endocrine control of estrogenregulated breast tumor growth. Breast cancer chemoprevention trials using tamoxifen among postmenopausal women have been proposed, and pilot studies are under way. Am J Epidemiol 1992;135:14252.
breast neoplasms; exercise; LH-FSH releasing hormone; primary prevention; tamoxifen
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