#asktheexperts My son is 5 months old and weighs 7kgs. But he has not gained muscle mass and looks very tiny still.

Question

Accepted Answer

It's normal for babies to have different growth patterns, but there are a few things to consider if you're concerned about your son's muscle mass and growth at 5 months old:

1. Weight vs. Muscle Mass: Babies, especially at this age, are still developing their muscle tone, and visible muscle mass may not be apparent yet. At 5 months, babies are still growing and may appear less muscular compared to older children. As long as he is meeting his developmental milestones and gaining weight steadily, it may just be part of his natural growth process.

2. Breastfeeding or Formula Feeding: Ensure your baby is getting sufficient nutrition. Since your baby is still quite young, either exclusive breastfeeding or formula milk is essential. If you're concerned about his weight or muscle development, you can check with your pediatrician if his feeding intake is appropriate for his age.

3. Tummy Time: To help develop his muscles, ensure your baby gets enough tummy time when he is awake. Tummy time helps strengthen neck, shoulder, and arm muscles, which is essential for motor development. Start with a few minutes at a time and gradually increase as he gets stronger.

4. Monitor Growth: Regular check-ups with the pediatrician are important to monitor his growth. If he is following a normal growth curve and gaining weight consistently (even if it’s not with visible muscle mass), there's usually no cause for concern.

5. Genetics and Body Type: Some babies are naturally leaner or have a different body composition, which can be influenced by genetics. If his weight and growth are steady and he’s active and alert, he may just have a lean build.

However, if you're concerned about his growth or muscle mass, or if there are other developmental delays or feeding issues, it's always a good idea to consult your pediatrician. They can check for any underlying issues and provide more personalized advice.