tailieunhanh - Reproductive factors and breast cancer risk. Do they differ according to age at diagnosis?

In an effort to highlight these problems and provide concrete steps toward change, the National Latina Institute for Repro- ductive Health (NLIRH) proudly presents the National Latina Agenda for Reproductive Justice (Agenda). The first part of the Agenda provides an analysis of the most salient reproductive health and rights issues impacting Latinas, followed by a set of policy recommendations and action strategies to address Latinas’ specific reproductive health needs. The seven-point policy action program is intended to guide efforts to affect policy change at the federal, state and local level. The Agenda is framed from a social justice. | HAL author manuscript Breast Cancer Res Treat 03 2002 72 2 107-15 Reproductive factors and breast cancer risk. Do they differ according to age at diagnosis HAL author manuscript inserm-00132411 version 1 F. Clavel-Chapelon1 M. Gerber2 1INSERM U521 Institut Gustave-Roussy Equipe E3N Villejuif 2Groupe d Epidemiologie Métabolique INSERM-CRLC Montpellier France Key words breast neoplasms menopause reproductive factors risk factors. Summary Studies yielding results on risk factors stratified by age at diagnosis or menopausal status were reviewed to better understand the role of hormonal factors and to determine whether reproductive events influence breast cancer risk differently according to age at diagnosis of breast cancer. Through a Medline Pubmed search 26 articles providing risk estimates by age at diagnosis of breast cancer or by menopausal status were analysed. A decrease of about 9 of breast cancer risk was found for each additional year at menarche when breast cancer was diagnosed early or before the menopause and of about 4 when diagnosed late or after. Breast cancer risk increased with increasing age at FFTP by 5 per year for breast cancer diagnosed early or before the menopause and by 3 for cancers diagnosed late or after the menopause. Each full term pregnancy or child led to a 3 reduction in the risk of breast cancer diagnosed early or before the menopause whereas the reduction attained 12 for the breast cancers diagnosed later. No change in the effect of these three factors with time date of diagnosis of the breast cancer before 1980 or after was observed. These results support the hypothesis of an age-specific effect of the three breast cancer risk factors considered herein based on the time of initiation of the carcinogenic process. These observations underline the importance of the time of initiation of the carcinogenic process in determining the effect of promoters such as reproductive factors. This largely unexplored aspect of breast carcinogenesis .