Association between Breastfeeding and Restrictive Spirometric Pattern in Women Aged over 40 Years: A Cross-Sectional Study

Hyeokjoo Jang, Sebin Kwon, Bumyeol Lee, Gahyeon Kim, Wonjeong Chae () and Sung-In Jang ()
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Hyeokjoo Jang: College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
Sebin Kwon: College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
Bumyeol Lee: College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
Gahyeon Kim: College of Medicine, Yonsei University, Seoul 03722, Republic of Korea
Wonjeong Chae: Institute of Health Services Research, Yonsei University, Seoul 03722, Republic of Korea
Sung-In Jang: Institute of Health Services Research, Yonsei University, Seoul 03722, Republic of Korea

IJERPH, 2022, vol. 19, issue 23, 1-13

Abstract: Objectives: Restrictive spirometric pattern (RSP) has a prevalence of 5.4–9.2% and is associated with various respiratory symptoms, comorbidities, and increased mortality. Breastfeeding has important effects on maternal health; however, the effects of breastfeeding on pulmonary function remain unclear. This study aimed to investigate the effects of breastfeeding on maternal pulmonary function, particularly the risk of RSP. Methods: Retrospective, cross-sectional observational study enrolling parous women aged >40 years who participated in the Korea National Health and Nutrition Examination Survey from 2013–2018. RSP was defined using the FEV1/FVC ratio and FVC outcomes of the pulmonary function test. The adjusted odds ratios (OR) for RSP were calculated using multivariate logistic regression. Results: Of 9261 parous women, 913 (9.9%) had RSP. Breastfeeding (≥1 month) was associated with a reduced risk of RSP (OR: 0.75 [0.60–0.92]) when adjusted for age, body mass index, smoking status, other diseases, socioeconomic status, and maternal risk factors. The adjusted ORs for RSP for women decreased further with increasing duration of breastfeeding ( p for trend: 0.0004). The FEV1, FVC, and FVC% were higher in women who breastfed than in those who did not breastfeed (by 0.0390 L, 0.0521 L, 0.9540% p , respectively). Conclusions: There is an association between breastfeeding and pulmonary function in parous women. Breastfeeding was associated with a lower prevalence of RSP in parous women aged >40 years old, suggesting that breastfeeding may have a beneficial effect on maternal pulmonary function.

Keywords: breastfeeding; pulmonary function; restrictive lung disease; restrictive spirometric pattern; parous women (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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