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Background: Good breastfeeding practice is essential in preventing malnutrition in children. The deuterium method is the best technique for assessing human breast milk output. We investigated whether deuterium doses < 30 g can be used to assess human breast milk using saliva and the new Agilent 4500S for Fourier transform infrared spectroscopy (FTIR). Methods: In a cross-sectional study, the breastmilk output of lactating mothers was evaluated using four different doses of deuterium in the Miti-Murhesa Health Zone (Democratic Republic of Congo). Lactating mothers of infants aged 3-23 months were recruited and assigned to a dosage group. Weight, height, and mid-upper arm circumference were measured and the body mass index calculated as weight/height2. Body composition (fat mass, free fat mass, total body water, and breastmilk output) was assessed using standard deuterium dilution methods. One-way ANOVA was used to compare the means in different groups and the chi² test to compare proportions. Results: Seventy-five lactating mothers were included in the study: 19 received 6 g, 20 received 10 g, 18 received 15 g, and 18 received 20 g deuterium. The mean ± standard deviation infant age was 10.6 ± 5.2, 11.1 ± 4.4, 10.9 ± 4.4, and 11.0 ± 3.9 months, respectively (p=0.076). We found no difference in the age and anthropometric parameters of the lactating mothers in the different groups. The mean ± standard deviation breast milk output rate was 796.6 ± 292.4, 260.8± 23.2, 749.8 ± 244.2, and 733.6 ± 207.1 g/d in the 6 g, 10 g, 15 g, and 20 g groups, respectively (p=0.883). Conclusions: The different doses of deuterium administered to lactating mothers resulted in similar breast milk output values. Thus, it is possible to evaluate human breast milk with deuterium doses |
