Association of Breastfeeding Duration with 12-Month Postpartum Blood Lipids in a Predominately Lower-Income Hispanic Pregnancy Cohort in Los Angeles

Zhongzheng Niu, Christine H. Naya, Lorena Reynaga, Claudia M. Toledo-Corral, Mark Johnson, Tingyu Yang, Brendan Grubbs, Nathana Lurvey, Deborah Lerner, Genevieve F. Dunton, Rima Habre, Carrie V. Breton, Theresa M. Bastain and Shohreh F. Farzan
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Zhongzheng Niu: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Christine H. Naya: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Lorena Reynaga: Department of Health Sciences, College of Health and Human Development, California State University Northridge, Northridge, CA 91330, USA
Claudia M. Toledo-Corral: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Mark Johnson: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Tingyu Yang: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Brendan Grubbs: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Nathana Lurvey: Eisner Health, Los Angeles, CA 90015, USA
Deborah Lerner: Eisner Health, Los Angeles, CA 90015, USA
Genevieve F. Dunton: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Rima Habre: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Carrie V. Breton: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Theresa M. Bastain: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA
Shohreh F. Farzan: Department of Population and Public Health Sciences, Keck School of Medicine, University of Southern California, Los Angeles, CA 90039, USA

IJERPH, 2022, vol. 19, issue 5, 1-12

Abstract: Breastfeeding may protect women’s long-term cardiovascular health; however, breastfeeding-related postpartum lipid changes remain unclear. We aim to examine associations of breastfeeding duration with maternal lipids at 12 months postpartum. In a subsample ( n = 79) of the Maternal and Developmental Risks from Environmental and Social Stressors (MADRES) cohort, breastfeeding status and duration at 3, 6, and 12 months postpartum were self-reported. Serum levels of lipids, including total cholesterol, triglycerides (TG), high-, low-, and very low-density lipoprotein cholesterol (HDL-C, LDL-C, VLDL-C), were measured from blood samples collected at 12 months postpartum. We used linear regression models to compare lipids by breastfeeding duration, adjusting for potential confounders. Women who were breastfeeding at 12 months had higher HDL-C (mean: 41.74 mg/dL, 95% CI: 37.27–46.74 vs. 35.11 mg/dL, 95% CI: 31.42–39.24), lower TG (80.45 mg/dL, 95% CI: 66.20–97.77 vs. 119.11 mg/dL, 95% CI: 98.36–144.25), and lower VLDL-C (16.31 mg/dL, 95% CI: 13.23, 20.12 vs. 23.09 mg/dL, 95% CI: 18.61–28.65) compared to women who breastfed for <6 months. No lipids were significantly different between women who breastfed for 6–11 months and for <6 months. Each month’s increase in breastfeeding duration was significantly, inversely associated with TG and VLDL-C and positively with HDL-C. Adjusting for fasting status, demographics, pre-pregnancy body mass index, breastfeeding frequency, and pregnancy complications did not appreciably change effect estimates. Breastfeeding at 12 months postpartum and a longer duration of breastfeeding in the first year postpartum were both associated with increased HDL-C and decreased TG and VLDL-C at 12 months postpartum.

Keywords: breastfeeding; lipids; postpartum; longitudinal cohort; maternal health (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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