What is low birth weight?

Low Birth Weight

What is low birth weight (LBW)?

Low birth weight (LBW) is a term used when a baby weighs less than 5 lb 8 oz (2,500 g) at birth. This often happens when a baby is born 3 or more weeks early (premature). They may be in the hospital more often in their first year of life than babies born without LBW.

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