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      • Calcium Intake is Negatively Associated with Bone Loss During Lactation: A Pilot Study

        Cheawon Lee,Seunghee Kim,Hangyeol Jeon,Suyoung Kim,Seolhui Jeong,A Mi Kim,Yoonha Kim,Jongwoon Kim,Clara Yongjoo Park 한국식품영양과학회 2021 한국식품영양과학회 학술대회발표집 Vol.2021 No.10

        Calcium (Ca) requirements during lactation are unknown. We investigated the association between Ca intake and bone mineral density (BMD) during lactation. Twenty-one pregnant women with singletons (non-breastfeeding [NBF] n=7; breastfeeding [BF] n=14) were enrolled before delivery. Ca intake during the 3rd trimester and 6 months postpartum was assessed by food frequency questionnaire and interview. Maternal BMD was measured by dual energy X-ray absorptiometry at the lumbar spine, femoral neck, trochanter, intertrochanter (IT), and total hip at delivery and weaning (or 6 months postpartum). The association of Ca intake with % change of BMD (%ㅿBMD) and change of Z-score (ㅿZ) were assessed by linear regression and Spearman’s rank correlation coefficient. No association was observed in NBF women. Similarly, %ㅿBMD and 3rd trimester Ca intake were not associated in BF women. However, Ca intake during lactation was positively associated with IT ㅿZ (β: 0.613, p=0.02). Ca:P ratio during lactation was also positively correlated with IT ㅿ%BMD (β: 0.587, p=0.03). Higher intake of Ca during lactation may prevent lactation-related bone loss at the IT.

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