1. What is Percentage Weight Loss?

Percentage weight loss is a measure of how much weight a baby has lost compared to their birth weight. It's particularly important for newborns as excessive weight loss can indicate feeding problems or other health issues.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( \text{Birth Weight} \) — The baby's weight at birth in kilograms
• \( \text{Current Weight} \) — The baby's current weight in kilograms

Explanation: The formula calculates what percentage of the original birth weight has been lost.

3. Importance of Monitoring Weight Loss

Details: Monitoring weight loss in newborns is crucial because:

• Normal newborns typically lose 5-7% of birth weight in first few days
• Loss >10% may indicate feeding problems or other issues
• Helps assess adequacy of breastfeeding
• Guides decisions about supplementation

4. Using the Calculator

Tips:

• Use accurate weights measured on the same scale
• Measure weights at consistent times (preferably before feeding)
• For most accuracy, weigh baby naked or with consistent clothing
• Track weight loss patterns over time

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for a newborn?
A: 5-7% in first 3-5 days is typical. Most regain birth weight by 10-14 days.

Q2: When should I be concerned about weight loss?
A: If loss exceeds 10% or if baby isn't regaining weight by 2 weeks.

Q3: How often should I weigh my baby?
A: Daily in first week if concerns exist, otherwise 2-3 times weekly until regaining birth weight.

Q4: Does this calculator work for premature babies?
A: Yes, but premature babies may have different expected weight loss patterns.

Q5: What if my baby loses more than 10%?
A: Consult your pediatrician for evaluation of feeding and possible supplementation.