BackgroundSupplementary feeding, colostrum or, in some countries, commercial milk formula, is given to newborns of women with Type 1 diabetes to prevent neonatal hypoglycemia. Few studies have explored the content of colostrum from women with Type 1 diabetes.Research AimsThis study aimed to investigate the macronutrients in colostrum collected during pregnancy and in the early postpartum period to compare colostrum contents in women with and without Type 1 diabetes.MethodsIn this cohort study, we collected colostrum among 20 women, 10 with and 10 without Type 1 diabetes, at 10 different time points in gestational weeks 36-40 and postpartum Days 1-5. We measured carbohydrates, protein, fat, and kilocalories in colostrum using a human milk analyzer
and we analyzed data using linear mixed models. In a follow-up analysis, we compared the content of colostrum from Day 1 with the nutritional values provided on the commercial milk formula, using a one-sample