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Nutritional rickets.

K W Feldman1, E K Marcuse, D A Springer

  • 1Odessa Brown Children's Clinic, Children's Hospital and Medical Center, Seattle, Washington.

American Family Physician
|November 1, 1990
PubMed
Summary
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Nutritional rickets is a concern for breastfed infants over six months, especially those with darker skin or in northern climates. Vitamin D supplementation is crucial for high-risk infants to prevent this bone disease.

Area of Science:

  • Pediatrics
  • Nutritional Science
  • Public Health

Background:

  • Nutritional rickets, a bone disorder caused by vitamin D deficiency, affects infants.
  • Breastfeeding is increasingly common, highlighting the need to assess infant nutritional adequacy.
  • Infants, particularly those with darker skin or in low-sunlight regions, may be at increased risk.

Observation:

  • A study diagnosed nutritional rickets in 18 infants aged 8-24 months.
  • Clinical signs included leg bowing, poor growth, seizures, and abnormal calcium/phosphate levels.
  • Elevated serum alkaline phosphatase and wrist radiographs were key diagnostic indicators.

Findings:

  • Breast milk alone may not provide sufficient vitamin D for infants older than six months.
  • Risk factors include darker skin pigmentation and residence in northern latitudes with limited sun exposure.

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  • Dietary vitamin D deficiency is the primary cause of nutritional rickets.

    • Implications:

    • Healthcare providers should consider vitamin D supplementation for breastfed infants at high risk.
    • Public health initiatives may need to address vitamin D intake in vulnerable infant populations.
    • Early diagnosis and intervention are essential to prevent long-term skeletal complications.