Vitamin C supplementation in children
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Vitamin C Supplementation in Children: Indications and General Considerations
Vitamin C is widely present in the diets of children in developed countries, and supplementation is generally only recommended when there is a clear deficiency due to poor intake or absorption issues. The benefits of supplementation for increased needs or as a general preventive measure are controversial and not well established. Most evidence suggests that routine supplementation is not necessary for healthy children with adequate diets, and inappropriate use can lead to confusion and potential misuse among clinicians and families 110.
Vitamin C and Respiratory Infections in Children
Prevention and Duration of Upper Respiratory Tract Infections (URTI)
Several studies and meta-analyses have examined the role of vitamin C in preventing and treating upper respiratory tract infections in children. The evidence shows that while vitamin C does not significantly prevent the incidence of URTIs, it can reduce the duration of symptoms by about 1–1.6 days, especially in children under 6 years old or those with frequent infections. The combination of vitamin C with other supplements like echinacea or probiotics may further reduce the duration and severity of symptoms, as well as decrease absenteeism from school and antibiotic use 346.
Vitamin C and Pneumonia
The evidence for vitamin C supplementation in preventing or treating pneumonia in children is uncertain. Systematic reviews and randomized controlled trials have found very low-quality evidence, with inconsistent results regarding reductions in illness duration or hospital stay. Some studies suggest a possible decrease in symptom severity or hospital stay, but the overall certainty is low, and more high-quality research is needed 257.
Specific Populations: Donor Milk and At-Risk Groups
For infants exclusively fed donor milk, vitamin C content may be insufficient due to losses during processing, and supplementation is recommended to meet daily requirements . In children with specific health conditions such as iron-deficiency anemia, chronic renal failure, or depressive disorders, vitamin C supplementation may offer some benefit, but there is no evidence for improvements in mortality, cognitive performance, or prevention of major diseases in otherwise healthy children .
Maternal Vitamin C Supplementation and Infant Outcomes
Supplementing pregnant smokers with vitamin C has been shown to improve airway function in their infants up to 12 months of age, suggesting a potential benefit in this specific at-risk group. This intervention is safe, inexpensive, and may help offset some of the negative effects of prenatal smoke exposure on lung development .
Conclusion
Vitamin C supplementation in children is generally only necessary in cases of deficiency or specific risk factors, such as exclusive donor milk feeding or prenatal smoke exposure. For the general pediatric population, routine supplementation does not prevent respiratory infections but may slightly reduce the duration of symptoms. The evidence for benefits in pneumonia is uncertain, and more research is needed. Overall, vitamin C is safe, but its use should be targeted rather than universal in children 1345+5 MORE.
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