A–Z Glossary

Weight-for-Age

Weight-for-age is a growth measurement that shows how a baby’s weight compares with expected values for their age.

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Weight-for-Length Percentiles Explained

Weight-for-Length Percentiles Explained

What Weight-for-Length Measures Weight-for-length is a proportional growth indicator. It plots a baby’s body weight against their recumbent length, which is the length measured while lying down. The measurement is particularly useful during infancy because standing height cannot yet be obtained reliably and because weight alone does not show whether body mass is proportionate to […]

When weight gain slows down

When weight gain slows down

Why weight gain may slow normally Infants often gain weight rapidly during the first weeks and months, then gradually settle into a slower rate of growth. This reflects changing energy needs, increasing activity, and the normal variability of infant growth. A baby who was large or small at birth may also move toward a genetically […]