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Is my 2-month-old son gaining too much weight?
Q: My son is 2-months-old and already weighs about 13 lbs. I'm worried that he is gaining too much weight too fast. He is breast-fed and his doctor says not to worry, but if he keeps growing this fast he will be 25-30 lbs. at 4 months. I work in a daycare and have 1-year-olds that don't weigh that much. Is he normal?
Andrea Standish
A: Andrea, although your son is growing fast, he is probably normal. It’s good that you take him to the doctor for his well-baby checks at 2, 4, 6, 9, and 12 months. At each visit, the doctor will examine your baby thoroughly, weigh and measure him, and plot his growth on a chart. The doctor will look to see that his weight is within the normal range and his growth follows the proper curve. His weight of 13 lbs. at 2 months falls at the 90th percentile—that means your son is larger than 90% of babies. You didn’t say how much he weighed at birth, but I’d guess that it was around 9 lbs., also in the 90th percentile. If your baby continues to grow properly along his curve, he’ll weigh 17-18 lbs. at 4 months, not 25-30 lbs. That’ll spare your back a little!

It’s great that you’re breastfeeding—that’s the best nutrition for your baby. The American Academy of Pediatrics recommends breastfeeding your baby for a year or more. Hold off giving your baby solid foods like cereal, fruits or vegetables until 4-6 months of age. Do you think he may be nursing too much? Notice how often he feeds—every two-four hours is typical. If he fusses between feedings when you think he may not be hungry, he may want something else other than milk—try a dummy to let him suck, talk with him, pick him up and walk around, check his nappy, etc.
Karen Sokal-Gutierrez M.D., M.P.H. Pediatrician