average newborn weight gain

Average Newborn Weight Gain: A Guide for Empowered Moms

As a mom, there’s nothing more precious than watching your little one grow and thrive in those first few months. One important aspect of your baby’s development is their weight gain. Understanding what is considered normal can give you peace of mind and help you track your baby’s progress.

In this guide, we’ll explore average newborn weight gain and provide practical tips to support your little one’s healthy growth.

What is Considered Normal?

Babies come in all shapes and sizes, and their weight at birth can vary. The average baby weight is between 5.5 to 10 pounds (2.5 to 4.5 kilograms). In the first week after birth, it’s typical for babies to lose a small amount of weight, usually around 5% to 7% of their birth weight. This is due to fluid loss and is completely normal. There’s lots of variation and our understanding of baby health has improved over time. In fact, Madhu Desiraju, M.D., states that, “A baby with chubby cheeks and dimpled thighs once was many people’s picture of a healthy newborn. But a baby born much larger than average may have special medical problems that need attention.”

The First Month: Steady Growth

After the initial weight loss, most babies start regaining their birth weight by the end of the second week. From there, they typically gain an average of 0.5 to 1 ounce (15 to 30 grams) per day during their first month. By the end of the first month, it’s common for babies to have gained about 1.5 to 2 pounds (0.7 to 0.9 kilograms) from their birth weight.


Months Two to Six: Continued Progress

During the second to sixth month, most babies continue to show steady weight gain, albeit at a slightly slower rate compared to their first month. On average, babies gain about 1 to 1.5 pounds (0.45 to 0.68 kilograms) per month during this period. By the time they reach six months, babies have usually doubled their birth weight, which is a significant milestone. According to Angela C. Mattke, M.D., “Healthy infants come in a range of sizes. But looking at the average growth, most babies have tripled their birth weights by the first birthday.”

Factors That Influence Weight Gain

Every baby is unique, and various factors can influence their average weight gain. Here are some key factors to keep in mind:

Breastfeeding or Formula Feeding

Healthy breastfed babies may have a different growth pattern compared to formula-fed babies. A breastfed baby might gain weight more slowly but catch up by the age of one.


Your baby’s genetics play a role in their growth. If both parents were smaller or larger as infants, it’s likely that your baby will follow a similar growth pattern.


Feeding Habits

Ensuring your baby receives enough milk or formula during feedings is crucial for healthy weight gain. If you have concerns about your baby’s feeding habits, consult with your healthcare provider.

Health Conditions

Certain health conditions can affect a baby’s weight gain. If you notice any unusual patterns or have concerns, reach out to your healthcare provider for guidance.

Celebrate Your Baby’s Progress

Remember, every baby is unique, and there is no “one size fits all” approach when it comes to weight gain. It’s important to celebrate the progress your baby makes, rather than comparing them to others. If you have any concerns about your baby’s weight gain, always consult with your healthcare provider for personalized advice and support.

How Big are Newborns?

Newborns come in all shapes and sizes, just like the families they join. On average, newborns typically weigh between 5.5 to 10 pounds (2.5 to 4.5 kilograms) at birth. However, it’s important to remember that each baby is unique and may fall outside these averages while still being perfectly healthy. Embrace the diversity and celebrate your baby’s individuality!


Preemies: Special Considerations

If your little one arrives earlier than expected, known as a preemie, their weight gain journey may differ from full-term babies. Babies born prematurely often have lower birth weights and may require additional support to thrive.

It’s essential to work closely with your healthcare provider to ensure a baby born preemie receives the specialized care and nutrition they need for healthy weight gain. Remember, you are a strong and resilient mama, and together with your healthcare team, you can navigate this journey with grace and confidence.

Is Bigger Always Better?

While we may be tempted to associate a larger size with better health, it’s important to remember that healthy growth comes in various forms. While some babies may naturally be bigger, others may be smaller and still be perfectly healthy even with a low birth weight.

Instead of focusing solely on size, pay attention to your baby’s overall well-being, including their developmental milestones, energy levels, and general happiness. Trust your instincts and lean on your healthcare provider for guidance if you have any concerns.


What to Do If Your Baby Isn’t Gaining Enough Weight

If you notice that your baby isn’t gaining weight as expected, it’s essential to take proactive steps to support their growth. Here are some practical tips:

Consult with Your Healthcare Provider

Reach out to your trusted healthcare provider to discuss your concerns. They can evaluate your baby’s overall health, feeding habits, and growth trajectory to identify any underlying issues.

Ensure Adequate Nutrition

Ensure your baby is getting enough milk or formula during feedings. Your healthcare provider may recommend additional feedings or adjustments to the feeding routine to ensure your little one receives the necessary nutrients for your baby’s health.

Seek Support

Don’t hesitate to reach out to lactation consultants, support groups, or parenting communities who can provide guidance and encouragement during this time. Remember, you are not alone on this journey, and there are resources available, such as those from the World Health Organization to help you navigate any challenges.


When Should I Be Concerned?

Healthline indicates that, “Most babies lose an average of 7 to 10 percent of their birth weight in the first few days. Ideally, they should be back to their birth weight by 10–14 days after birth.” While every baby is unique, there are instances when it’s important to seek further support. If you notice any of the following signs, reach out to your healthcare provider:

  • Consistently slow weight gain or the baby loses weight
  • Lack of appetite or difficulty feeding
  • Excessive sleepiness or lethargy
  • Unusual changes in bowel movements or urination patterns

To Wrap Up

Remember, mama, you are the best advocate for your baby. Trust your instincts, stay informed, and reach out for support whenever you need it. Let’s embark on this beautiful journey of motherhood together, embracing the joy, abundance, and empowerment that comes with nurturing our babies. You’ve got this, mama!

As an empowered mom, you have the ability to nurture your baby’s growth and provide a loving environment where they can thrive. By staying informed and seeking guidance when needed, you are well-equipped to support your little one’s journey to a happy, healthy future.

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Kathy Urbanski

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