1. What is Percentage Weight Loss?

Percentage weight loss in newborns is a crucial indicator of health status. It's common for babies to lose some weight in the first few days after birth, but excessive loss may indicate feeding problems or other health issues.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• \( birth\_weight \) — Baby's weight at birth (kg)
• \( current\_weight \) — Baby's current weight (kg)

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

3. Importance of Weight Loss Monitoring

Details: Monitoring weight loss helps identify potential feeding issues, dehydration, or other health concerns. Most newborns lose 5-7% of their birth weight in the first few days and regain it by 10-14 days.

4. Using the Calculator

Tips: Enter birth weight and current weight in kilograms. Both values must be positive numbers. The calculator will show the percentage of weight lost since birth.

5. Frequently Asked Questions (FAQ)

Q1: What is normal weight loss for a newborn?
A: 5-7% loss is typical, up to 10% may be normal for some babies. More than 10% warrants medical evaluation.

Q2: When should I be concerned about weight loss?
A: If loss exceeds 10%, if baby isn't regaining weight by day 5, or if there are signs of dehydration.

Q3: How often should I weigh my baby?
A: In the first week, daily weights may be helpful. After that, 2-3 times per week until birth weight is regained.

Q4: Does this apply to premature babies?
A: Preemies may lose more weight (10-15%) and take longer to regain it. Consult your pediatrician.

Q5: What if my baby isn't losing weight?
A: No weight loss or weight gain in first days may indicate fluid retention and should be evaluated.