OBJECTIVES: To determine if pregnancy after an extended period of lactation curtails the recovery of maternal bone mineral density. METHODS: Twenty-five women who fully breast-fed their infants for at least 6 months and had a subsequent pregnancy within 18 months of initiating lactation were studied longitudinally. Twenty controls breast-fed similarly, but had no subsequent pregnancy. The women were healthy, well-nourished, and between 20-40 years old. Bone mineral density was measured by dual x-ray energy absorptiometry at the spine and hip. RESULTS: Both cases and controls lost bone mineral density with extended lactation. The case group had a bone mineral density recovery comparable to the controls. CONCLUSION: Women with the dual calcium demands of extended lactation and a subsequent pregnancy are not at risk for failure of bone recovery to pre-lactation levels.
OBJECTIVES: To determine if pregnancy after an extended period of lactation curtails the recovery of maternal bone mineral density. METHODS: Twenty-five women who fully breast-fed their infants for at least 6 months and had a subsequent pregnancy within 18 months of initiating lactation were studied longitudinally. Twenty controls breast-fed similarly, but had no subsequent pregnancy. The women were healthy, well-nourished, and between 20-40 years old. Bone mineral density was measured by dual x-ray energy absorptiometry at the spine and hip. RESULTS: Both cases and controls lost bone mineral density with extended lactation. The case group had a bone mineral density recovery comparable to the controls. CONCLUSION:Women with the dual calcium demands of extended lactation and a subsequent pregnancy are not at risk for failure of bone recovery to pre-lactation levels.
Authors: F M F Grizzo; M de Andrade Pereira; L B M Marchiotti; F Guilhem; T da Silva Santos; C M Dell' Agnolo; W A de Melo; M de Medeiros Pinheiro; M D de Barros Carvalho; S M Pelloso Journal: Osteoporos Int Date: 2021-01-21 Impact factor: 4.507
Authors: L Miglioli; L Costa-Paiva; L S de Lourenço; S S Morais; M C Lopes de Lima; A M Pinto-Neto Journal: Osteoporos Int Date: 2006-08-26 Impact factor: 4.507
Authors: F M F Grizzo; A C J Alarcão; C M Dell' Agnolo; R B Pedroso; T S Santos; J R N Vissoci; M M Pinheiro; M D B Carvalho; S M Pelloso Journal: Osteoporos Int Date: 2020-01-02 Impact factor: 4.507
Authors: Brian L Gulson; Karen J Mizon; Jacqueline M Palmer; Michael J Korsch; Alan J Taylor; Kathryn R Mahaffey Journal: Environ Health Perspect Date: 2004-11 Impact factor: 9.031