Adolescent reproductive events and subsequent breast cancer risk

This study investigated the relationship between reproductive events during adolescence and subsequent breast cancer risk. Logistic regression models used self-reported data from 862 case patients and 790 controls in the Carolina Breast Cancer Study. Miscarriage, induced abortion, and full-term preg...

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Bibliographic Details
Published in:American journal of public health (1971) 1999-08, Vol.89 (8), p.1244-1247
Main Authors: Marcus, P M, Baird, D D, Millikan, R C, Moorman, P G, Qaqish, B, Newman, B
Format: Article
Language:English
Subjects:
Abortion
Adolescence
Adolescent
Adolescents
Adult
African Americans
Age
Biological and medical sciences
Birth control
Breast cancer
Breast Feeding - adverse effects
Breast Neoplasms - epidemiology
Breast Neoplasms - prevention & control
Breastfeeding
Breastfeeding & lactation
Case-Control Studies
Child development
Contraceptives
Contraceptives, Oral - adverse effects
Female
Gynecology. Andrology. Obstetrics
Health risk assessment
Health risks
Humans
Logistic Models
Mammary gland diseases
Medical sciences
Middle Aged
Miscarriage
Odds Ratio
Pregnancy
Pregnancy in Adolescence
Public health
Regression analysis
Reproduction
Reproductive History
Risk Factors
Teenage pregnancy
Teenagers
Tumors
Womens health
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Summary:This study investigated the relationship between reproductive events during adolescence and subsequent breast cancer risk. Logistic regression models used self-reported data from 862 case patients and 790 controls in the Carolina Breast Cancer Study. Miscarriage, induced abortion, and full-term pregnancy before 20 years of age were not associated with breast cancer. Among premenopausal women, breast-feeding before 20 years of age was inversely associated with disease. Oral contraceptive use before 18 years of age was positively associated with disease risk among African American women only. Pregnancy during adolescence does not appear to influence breast cancer risk, but breast-feeding may. A possible increased breast cancer risk among African American women who used oral contraceptives as adolescents warrants further study.
ISSN:0090-0036
1541-0048
DOI:10.2105/AJPH.89.8.1244