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Parents sometimes worry needlessly about these percentages.
For instance, if your baby is in the 10th percentile for length and the 90th percentile for weight, his weight could be an issue.
There's a wide range of healthy shapes and sizes among children.
Genetics, how active your baby is, health problems, and nutrition are just some of the factors that can influence growth.
It would be perfectly normal for that child to consistently rank in the 10th percentile for height as she grows up.
Percentile measurements are a general guide to help you and your doctor assess your baby's growth.