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[The clinical relevance of phosphorus and calcium in infant nutrition]
1Kinderspital Zürich.
Insights
Baby formula calcium and phosphorus levels rarely cause issues in healthy infants due to homeostasis. However, specific conditions in premature or rickets-affected infants may require phosphorus supplementation, while others benefit from low-phosphate formulas.
Area of Science:
- Pediatric Nutrition
- Mineral Metabolism
- Clinical Biochemistry
Context:
- Modern infant feeding practices aim for optimal mineral balance.
- Calcium and phosphorus homeostasis is crucial for infant health.
- Variations in mineral content of baby formula can impact infant health.
Purpose:
- To explore the role of calcium and phosphorus in baby formula.
- To identify circumstances where formula mineral content may cause pathological conditions.
- To provide recommendations for infant formula composition.
Summary:
- Healthy infants efficiently regulate calcium and phosphorus (Ca-P) levels through homeostasis.
- Nutritional deficiencies or excesses of calcium are uncommon in modern infant feeding.
- Phosphorus deficiency can cause phosphopenic rickets in premature or genetically affected infants, necessitating P-supplementation.
- High phosphorus content in formula may lead to late neonatal hypocalcemia.
- Low-phosphate formula, mimicking human milk, is advised for newborns and infants with hyperphosphatemic renal failure.
Impact:
- Informing clinical decisions on infant formula composition.
- Guiding the prevention and treatment of mineral-related disorders in infants.
- Highlighting the importance of tailored infant nutrition for specific medical conditions.
Abstract:
This paper is an introduction to the clinical part of the symposium and deals with the question of whether and under which circumstances the calcium and phosphorus content in baby formula can provoke pathological conditions. In a healthy baby, high or low mineral intake is efficiently compensated for by Ca-P homeostasis. Both nutritional calcium deficiency and calcium excess are the exception with modern baby feeding practices. However, P-deficiency states resulting in phosphopenic rickets might occur in premature babies and in children with familial hypophosphatemic rickets. These two conditions should be treated and prevented by an alimentary P-supplement. On the other hand, formula with a rich P-content might be a cause of the late form of neonatal hypocalcemia. Therefore, a relatively low-phosphate formula preparation, similar to human milk, is recommended for the first 2 weeks of life of full-term newborns, as well for infants with hyperphosphatemic renal failure.