Replication Data for: Breast milk macronutrients and offspring growth and neurodevelopment in a lactation cohort in rural Bangladesh

In this prospective observational lactation cohort, which enrolled 99 participants in rural Sylhet, Bangladesh, we collected hand-expressed mid-feed human milk samples and analyzed macronutrient concentrations using mid-infrared spectroscopy. Daily infant breast milk intake was estimated using 24-hour breastfeeding diaries and pre- and post-feeding weights. We measured infant weight, length, and head circumference at birth, 3, 6, and 12 months, and neurodevelopment at 24 months using the Bayley Scales of Infant and Toddler Development-III.