Weight Loss Formula:
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Birth weight loss refers to the amount of weight a newborn loses in the first days after birth. It's normal for babies to lose some weight initially, but excessive loss may indicate feeding problems or other health issues.
The calculator uses a simple formula:
Where:
Explanation: The difference between birth weight and current weight gives the amount of weight lost since birth.
Details: Monitoring newborn weight loss helps identify potential feeding problems early. Most babies lose 5-7% of birth weight in first few days and regain it by 10-14 days. Loss >10% may require intervention.
Tips: Enter both weights in kilograms (kg). Weights should be measured using the same scale for accuracy. Current weight should be the most recent measurement.
Q1: How much weight loss is normal?
A: 5-7% loss in first 3-5 days is typical. More than 10% loss may indicate problems.
Q2: When should I be concerned?
A: If loss exceeds 10%, baby isn't regaining by day 10, or shows signs of dehydration (few wet diapers, lethargy).
Q3: How often should weight be checked?
A: First weight check at 3-5 days old, then as recommended by pediatrician until birth weight is regained.
Q4: Does weight loss differ for breastfed vs formula-fed?
A: Breastfed babies may lose slightly more initially but patterns are similar when feeding is established.
Q5: What affects weight loss patterns?
A: Delivery method (vaginal vs cesarean), feeding method, maternal fluids during labor, and infant health status.