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Kehm RD, Lilge L, Walter EJ, White M, Herbstman JB, Perera FP, Miller RL, Terry MB, Tehranifar P. Socioeconomic Status at Birth and Breast Tissue Composition in Adolescence and Adulthood. Cancer Epidemiol Biomarkers Prev 2023; 32:1294-1301. [PMID: 37436425 PMCID: PMC10804240 DOI: 10.1158/1055-9965.epi-23-0444] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/15/2023] [Accepted: 07/10/2023] [Indexed: 07/13/2023] Open
Abstract
BACKGROUND Socioeconomic status (SES) at birth is associated with breast cancer risk. Whether this association is driven by changes in breast tissue composition (BTC) prior to adulthood remains unclear. METHODS We used multivariable linear regression models to examine whether SES at birth is associated with BTC in adolescence and adulthood using data from a New York City cohort of daughters (n = 165, 11-20 years) and mothers (n = 160, 29-55 years). We used maternal-reported data on daughters' household income and maternal education at birth, analyzed individually and in combination (SES index). Women also reported their own mothers' education at birth. We used optical spectroscopy to evaluate BTC measures that positively (water content, collagen content, optical index) and negatively (lipid content) correlate with mammographic breast density, a recognized breast cancer risk factor. RESULTS Being in the highest versus lowest category of the SES index was associated with lower lipid content [βadjusted (βadj) = -0.80; 95% confidence interval (CI), -1.30 to -0.31] and higher collagen content (βadj = 0.54; 95% CI, 0.09-0.99) in adolescence. In women with a body mass index (BMI) <30 kg/m2, higher maternal education at birth (≥ vs. < high school degree) was associated with lower lipid content (βadj = -0.57; 95% CI, -0.97 to -0.17), higher water content (βadj = 0.70; 95% CI, 0.26-1.14), and higher optical index (βadj = 0.53; 95% CI, 0.10-0.95). CONCLUSIONS This study supports that SES at birth is associated with BTC in adolescence and adulthood, although the latter association may depend on adult BMI. IMPACT Further research is needed to identify the socially patterned early life factors influencing BTC.
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Affiliation(s)
- Rebecca D Kehm
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168 St, New York, NY 10032, USA
| | - Lothar Lilge
- Department of Medical Biophysics, University of Toronto, 101 College St, Toronto, ON M5G 0A3, Canada
- Princess Margaret Cancer Centre, University Health Network, 101 College St, Toronto, ON M5G 0A3, Canada
| | - E Jane Walter
- Princess Margaret Cancer Centre, University Health Network, 101 College St, Toronto, ON M5G 0A3, Canada
| | - Melissa White
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168 St, New York, NY 10032, USA
| | - Julie B Herbstman
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Frederica P Perera
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY 10032, USA
| | - Rachel L Miller
- Division of Clinical Immunology, Department of Medicine, Icahn School of Medicine at Mount Sinai, 1 Gustave L Levy Place, New York, NY 10029, USA
| | - Mary Beth Terry
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168 St, New York, NY 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
| | - Parisa Tehranifar
- Department of Epidemiology, Mailman School of Public Health, Columbia University, 722 W 168 St, New York, NY 10032, USA
- Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, New York, NY 10032, USA
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Exposure to natural vegetation in relation to mammographic density in a Massachusetts-based clinical cohort. Environ Epidemiol 2022; 6:e216. [PMID: 35975164 PMCID: PMC9374192 DOI: 10.1097/ee9.0000000000000216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 06/14/2022] [Indexed: 11/26/2022] Open
Abstract
Inverse associations between natural vegetation exposure (i.e., greenness) and breast cancer risk have been reported; however, it remains unknown whether greenness affects breast tissue development or operates through other mechanisms (e.g., body mass index [BMI] or physical activity). We examined the association between greenness and mammographic density—a strong breast cancer risk factor—to determine whether greenness influences breast tissue composition independent of lifestyle factors.
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Yu T, Ye DM. The epidemiologic factors associated with breast density: A review. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2022; 27:53. [PMID: 36092490 PMCID: PMC9450246 DOI: 10.4103/jrms.jrms_962_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 01/14/2022] [Accepted: 01/26/2022] [Indexed: 11/04/2022]
Abstract
In recent years, some studies have evaluated the epidemiologic factors associated with breast density. However, the variant and inconsistent results exist. In addition, breast density has been proved to be a significant risk factor associated with breast cancer. Our review summarized the published studies and emphasized the crucial factors including epidemiological factors associated with breast density. In addition, we also discussed the potential reasons for the discrepant results with risk factors. To decrease the incidence and mortality rates for breast cancer, in clinical practice, breast density should be included for clinical risk models in addition to epidemiological factors, and physicians should get more concentrate on those women with risk factors and provide risk-based breast cancer screening regimens.
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Tastula A, Jukkola A, Alakokkare AE, Nordström T, Eteläinen S, Karihtala P, Miettunen J. Early-Life Risk Factors for Breast Cancer - Prospective Follow-up in the Northern Finland Birth Cohort 1966. Cancer Epidemiol Biomarkers Prev 2021; 30:616-622. [PMID: 33563646 DOI: 10.1158/1055-9965.epi-20-1442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Revised: 12/15/2020] [Accepted: 02/01/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND While some risk factors for breast cancer have been confirmed, less is known about the role of early biological and social risk factors for breast cancer in adult life. METHODS In a prospective follow-up in the Northern Finland Birth Cohort 1966 consisting of 5,308 women, 120 breast cancers were reported via national registers by the end of 2018. Early risk factors were examined with univariate and multivariate analyses using Cox regression analysis. The main results are reported with HRs and their 95% confidence intervals (CI). RESULTS In the multivariate-adjusted models, women whose mothers lived in urban areas (HR, 1.68; 95% CI, 1.13-2.51) during pregnancy, were low educated (HR, 2.40; 95% CI, 1.30-4.45), and had been diagnosed with breast cancer (HR, 1.97; 95% CI, 1.09-3.58) had a higher risk for breast cancer in adult life. Lower BMI at the age of 14 associated nonsignificantly with the risk of breast cancer (Mann-Whitney U test, P = 0.087). No association between birth size and breast cancer risk in adult life was found. CONCLUSIONS Early-life residence and socioeconomic conditions may have an impact on developing breast cancer in women in adult life. All breast cancer cases of this study were relatively young, and most of them are assumed to be premenopausal. IMPACT This study is one of a few prospective birth cohort studies to examine early-life socioeconomic factors and breast cancer risk in adult life. This study is limited due to small number of cases.
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Affiliation(s)
- Anniina Tastula
- Center for Life Course Health Research, University of Oulu, Oulu, Finland. .,Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Arja Jukkola
- Department of Oncology of Medicine and Radiotherapy, Tampere University Hospital, Tampere, Finland.,Tampere Cancer Center, Faculty of Medicine and Health Technology, University of Tampere, Tampere, Finland
| | - Anni-Emilia Alakokkare
- Center for Life Course Health Research, University of Oulu, Oulu, Finland.,Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
| | - Tanja Nordström
- Center for Life Course Health Research, University of Oulu, Oulu, Finland.,Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland.,Infrastructure for Population Studies, Faculty of Medicine, University of Oulu, Oulu, Finland
| | - Sanna Eteläinen
- Department of Obstetrics and Gynaecology, Oulu University Hospital, Oulu, Finland.,PEDEGO Research Unit, University of Oulu, Oulu, Finland
| | - Peeter Karihtala
- Helsinki University Hospital Comprehensive Cancer Center and University of Helsinki, Helsinki, Finland
| | - Jouko Miettunen
- Center for Life Course Health Research, University of Oulu, Oulu, Finland.,Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
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Jones DP, Cohn BA. A vision for exposome epidemiology: The pregnancy exposome in relation to breast cancer in the Child Health and Development Studies. Reprod Toxicol 2020; 92:4-10. [PMID: 32197999 PMCID: PMC7306421 DOI: 10.1016/j.reprotox.2020.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Etiology of complex diseases, such as breast cancer, involves multiple genetic, behavioral and environmental factors. Gene sequencing enabled detection of genetic risks with relatively small effect size, and high-resolution metabolomics (HRM) to provide omics level data for exposures is poised to do the same for environmental epidemiology. Coupling HRM to the Child Health and Development Studies (CHDS) cohort combines two unique resources to create a prototype for exposome epidemiology, in which omics scale measures of exposure are used for study of distribution and determinants of health and disease. Using this approach, exposures and biologic responses during pregnancy have been linked to breast cancer in the CHDS. With improved chemical coverage and extension to larger populations and other disease processes, development of exposome epidemiology portends discovery of new disease-associated environment factors with small effect size as well as new capabilities to disentangle these from behavioral and other risk factors.
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Affiliation(s)
- Dean P Jones
- Department of Medicine, School of Medicine, Emory University, Atlanta, GA 30322, USA.
| | - Barbara A Cohn
- Child Health and Development Studies, Public Health Institute, 1683 Shattuck Avenue, Suite B, Berkeley, CA 94709, USA
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Cohn BA, Cirillo PM, Krigbaum NY, Zimmermann LM, Flom JD, Terry MB. Placental morphometry in relation to daughters' percent mammographic breast density at midlife. Reprod Toxicol 2019; 92:98-104. [PMID: 31715261 DOI: 10.1016/j.reprotox.2019.11.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 10/30/2019] [Accepted: 11/04/2019] [Indexed: 12/27/2022]
Abstract
Intrauterine and early-life exposures, including intrauterine smoke exposures and infant growth are associated with mammographic breast density (MBD), a strong breast cancer risk factor. We investigated whether placental morphometry, which is affected by intrauterine smoke exposure and also influences infant growth, predicts %MBD at ages 37-47. In 247 daughters in the Child Health and Development Studies, we found that larger placental surface area and placental thickness were associated with lower %MBD (-0.32 per cm2, 95% CI -0.6, -0.05; -37.8 per 0.5 cm, 95% CI= -73.3, -2.3 respectively) independent of mothers' smoking, age, weight, parity and daughters' birthweight and age at mammogram. We also observed a positive interaction between placental surface area and thickness (p < 0.05) such that the highest breast dense area was observed for offspring with the thickest and largest placentas. Factors that impact placental morphometry, in addition to in utero smoke exposure, may influence adult breast architecture and breast cancer risk.
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Affiliation(s)
- Barbara A Cohn
- Child Health and Development Studies, Public Health Institute, Berkeley, CA 94708, United States.
| | - Piera M Cirillo
- Child Health and Development Studies, Public Health Institute, Berkeley, CA 94708, United States
| | - Nickilou Y Krigbaum
- Child Health and Development Studies, Public Health Institute, Berkeley, CA 94708, United States
| | - Lauren M Zimmermann
- Child Health and Development Studies, Public Health Institute, Berkeley, CA 94708, United States
| | - Julie D Flom
- Department of Epidemiology Mailman School of Public Health, Columbia University Medical, Center 722 West 168th Street, 8th Floor, United States; Department of Pediatrics, Kravis Children's Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, United States
| | - Mary Beth Terry
- Department of Epidemiology Mailman School of Public Health, Columbia University Medical, Center 722 West 168th Street, 8th Floor, United States; Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 11 New York, NY 10032, United States
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Binder AM, Corvalan C, Pereira A, Calafat AM, Ye X, Shepherd J, Michels KB. Prepubertal and Pubertal Endocrine-Disrupting Chemical Exposure and Breast Density among Chilean Adolescents. Cancer Epidemiol Biomarkers Prev 2018; 27:1491-1499. [PMID: 30158279 DOI: 10.1158/1055-9965.epi-17-0813] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Revised: 11/09/2017] [Accepted: 08/23/2018] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND During puberty, mammary tissue undergoes rapid development, which provides a window of heightened susceptibility of breast composition to the influence of endogenous and exogenous hormones. Exposure to endocrine-disrupting chemicals (EDC) may affect breast development and composition and the risk of developing breast cancer in adulthood. METHODS We evaluated the associations between breast density and urinary concentrations of phenols and phthalates collected at Tanner 1 (B1) and Tanner 4 (B4) in 200 Chilean girls. Total breast volume (BV), fibroglandular volume (FGV), and percent dense breast (%FGV) were evaluated at B4 using dual X-ray absorptiometry. Generalized estimating equations were used to analyze the association between concentrations of EDC biomarkers across puberty and breast density. RESULTS The geometric mean %FGV was 7% higher among girls in the highest relative to the lowest tertile of monocarboxyisooctyl phthalate [1.07; 95% confidence interval (CI), 1.01-1.14]. Monoethyl phthalate concentrations at B4 were positively associated with FGV (highest vs. lowest tertile: 1.22; 95% CI, 1.06-1.40). Bisphenol A displayed a U-shaped association with FGV; girls in the middle tertile had at least 10% lower FGV than girls in the lowest or highest tertiles. Monocarboxyisononyl phthalate showed a nonlinear association with BV. No other statistically significant associations were observed. CONCLUSIONS Our results suggest that the developing breast tissue is susceptible to select EDCs during childhood and adolescence. IMPACT This study may spur further investigations into environmental influences on breast development during puberty and how shifts in pubertal breast density track through the life course to modify breast cancer risk.
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Affiliation(s)
- Alexandra M Binder
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, California
| | - Camila Corvalan
- Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile
| | - Ana Pereira
- Institute of Nutrition and Food Technology, University of Chile, Santiago, Chile
| | - Antonia M Calafat
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Xiaoyun Ye
- Division of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - John Shepherd
- Population Sciences in the Pacific Program, University of Hawaii Cancer Center, Honolulu, Hawaii
| | - Karin B Michels
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, California.
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Binder AM, Corvalan C, Mericq V, Pereira A, Santos JL, Horvath S, Shepherd J, Michels KB. Faster ticking rate of the epigenetic clock is associated with faster pubertal development in girls. Epigenetics 2018; 13:85-94. [PMID: 29235933 DOI: 10.1080/15592294.2017.1414127] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
Abstract
Epigenetic age is an indicator of biological aging, capturing the impact of environmental and behavioral influences across time on cellular function. Deviance between epigenetic age and chronological age (AgeAccel) is a predictor of health. Pubertal timing has similarly been associated with cancer risk and mortality rate among females. We examined the association between AgeAccel and pubertal timing and adolescent breast composition in the longitudinal Growth and Obesity Cohort Study. AgeAccel was estimated in whole blood using the Horvath method at breast Tanner 2 (B2) and 4 (B4). Total breast volume, absolute fibro-glandular volume (FGV), and %FGV were evaluated at B4 using dual X-ray absorptiometry. The impact of AgeAccel (mean: 0; SD: 3.78) across puberty on the time to breast development (thelarche), menarche, and pubertal tempo (thelarche to menarche) was estimated using accelerated failure time models; generalized estimating equations were used to evaluate associations with breast density. A five-year increase in average adolescent AgeAccel was associated with a significant decrease in time to menarche [hazard ratio (HR): 1.37; 95% confidence interval (CI): 1.04, 1.80] adjusting for birth weight, maternal pre-pregnancy body mass index, maternal height, maternal education, B2 height, fat percentage, and cell composition. AgeAccel displayed a stronger inverse association with pubertal tempo (HR: 1.48; 95% CI: 1.10, 1.99). A five-year increase in AgeAccel was associated with 5% greater %FGV, adjusting for B4 percent body fat, and maternal traits (95% CI: 1.01, 1.10). Our study provides unique insight into the influence of AgeAccel on pubertal development in girls, which may have implications for adult health.
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Affiliation(s)
- Alexandra M Binder
- a Department of Epidemiology , Fielding School of Public Health, University of California , Los Angeles , 650 Charles E Young Drive South, Los Angeles , CA 90095 , USA
| | - Camila Corvalan
- b Institute of Nutrition and Food Technology , University of Chile , Av el Libano 5524, Santiago , Chile
| | - Verónica Mericq
- c Institute of Maternal and Child Research , University of Chile , Santa Rosa 1234, 2° piso, Santiago , Chile
| | - Ana Pereira
- b Institute of Nutrition and Food Technology , University of Chile , Av el Libano 5524, Santiago , Chile
| | - José Luis Santos
- d Department of Nutrition , Diabetes and Metabolism, School of Medicine, Pontificia Universidad Católica de Chile , Av Libertador Bernardo O'Higgins 340, Santiago , Chile
| | - Steve Horvath
- e Department of Biostatistics , School of Public Health, and Department of Human Genetics, Gonda Research Center , David Geffen School of Medicine, University of California, Los Angeles , 695 Charles E Young Drive South, Los Angeles , CA 90095 , USA
| | - John Shepherd
- f Department of Radiology and Biomedical Imaging , University of California, San Francisco , 400 Parnassus Avenue, San Francisco , CA 94117 , USA
| | - Karin B Michels
- a Department of Epidemiology , Fielding School of Public Health, University of California , Los Angeles , 650 Charles E Young Drive South, Los Angeles , CA 90095 , USA
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