Plain language summary
The World Health Organization (WHO) reported that acute respiratory infection (ARI) is the leading cause of death in children followed by diarrhoea and constipation. In Vietnam, despite many achievements in malnutrition prevention, the rate of malnutrition is elevated. Malnutrition results in ARI, diarrhoea, and physical and mental retardation in children The aim of this study was to investigate the effects of a probiotic fermented milk product containing Lactobacillus casei strain Shirota (LcS) on gastrointestinal symptoms, respiratory infections, and the nutrition status of children from Vietnam. This study was a community based, controlled open trial and it was conducted over a period of 18 weeks consisting of 2-week screening/pre-observational period; 12-week intervention period; and 4-week postintervention period. A total of 1036 children (518 children in the Control group and 518 children in the Probiotic group) were enrolled in this study. Results showed a significant reduction in the incidence of constipation and beneficial effects to prevent infectious diseases in Vietnamese children. Furthermore, while LcS did not affect the duration of diarrhoea, the incidence of diarrhoea tended to be improved after 12 weeks of intervention. Authors conclude that habitual consumption of fermented milk containing LcS prevented constipation and ARI in Vietnamese children, and it may be useful for treating diarrhoea and improving nutritional status, thus conferring remarkable health benefits to children in Vietnam.
Abstract
OBJECTIVES To evaluate the efficacy of fermented milk containing Lactobacillus casei strain Shirota (LcS) on the incidence of constipation, diarrhea, acute respiratory infections (ARI), and nutritional status of young Vietnamese children. METHODS A controlled field trial was conducted with 1003 children (3-5 years old) in Thanh Hoa province in Vietnam. The probiotic group (n = 510) consumed fermented milk 65 mL/day containing 108 CFU/mL of LcS for the 12-week intervention period, whereas the control group (n = 493) was not given any. The incidence of constipation, diarrhea, ARI, and anthropometry in children was determined at baseline, after 4, 8, and 12-week intervention, and after the 4-week follow-up period. RESULTS Probiotic drink decreased the incidence of constipation after the 12-week intervention period (12.0% vs. 32.0%, OR = 0.28 (95% CI: 0.21-0.40), p < 0.001), tended to decrease the incidence of diarrhea (4.9% vs. 7.9%, OR = 0.60 (95% CI: 0.35-1.01), p = 0.068), and prevented the occurrence of ARI (15.9% vs. 24.5%, OR = 0.58 (95% CI: 0.42-0.79), p < 0.001), when compared with the control group. In contrast, no probiotic effects were observed for the duration of diarrhea or ARI. Weight gain was higher in the probiotic group than in the control group after 4, 8, and 12-week intervention and after the 4-week follow-up period (p < 0.05). CONCLUSIONS Daily intake of fermented milk containing LcS strongly prevented the incidence of constipation and ARI in Vietnamese children. This study also revealed the potential effects of the use of a probiotic drink on diarrhea prevention as well as nutritional status improvement.
Methodological quality
Jadad score
:
3
Allocation concealment
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Yes
