Plasma zinc levels in early infancy in north India

Area of Science:

• Pediatrics
• Nutritional Science
• Biochemistry

Background:

• Plasma zinc is crucial for infant growth and development.
• Understanding normal zinc levels in healthy term infants is essential for identifying potential deficiencies.
• Previous research indicates potential sex-based differences in nutrient metabolism.

Purpose of the Study:

• To determine plasma zinc levels in term infants at one month of age.
• To investigate potential differences in plasma zinc levels between male and female infants.
• To explore the relationship between exclusive breastfeeding and plasma zinc levels.

Main Methods:

• Plasma zinc concentrations were measured in term infants (birth weight > 2 kg) at one month of age.
• Data were analyzed to compare zinc levels between sexes and between infants with and without exclusive breastfeeding.
• Statistical significance was assessed using appropriate tests (P value = .003 for sex difference).

Main Results:

• The average plasma zinc level was 107.69 +/- 23.76 micrograms/dL (range: 70-150 micrograms/dL).
• Male infants exhibited significantly higher plasma zinc levels (117.56 +/- 23.84 micrograms/dL) compared to female infants (98.56 +/- 20.04 micrograms/dL; P = .003).
• No significant difference in zinc levels was observed based on exclusive breastfeeding status.

Conclusions:

• Plasma zinc levels in term infants at one month are within a defined range, with notable sex-based variations.
• The findings highlight a higher requirement or different metabolic handling of zinc in male infants.
• Further studies are warranted to explore the clinical implications and benefits of zinc supplementation in young infants.