At first, newborns who are given formula may not be able to digest all of the milk sugar (lactose) in the formula they drink. The undigested lactose moves to the large intestine and causes cramps, bloating, or gas. As the baby grows, he or she is better able to digest the lactose, and the symptoms disappear.
Babies who are only fed breast milk do not have milk sugar intolerance, because breast milk contains lactase, an enzyme that helps digest lactose.
It is possible that the main title of the report Sudden Unexplained Death in Childhood is not the name you expected. Please check the synonyms listing to find the alternate name(s) and disorder subdivision(s) covered by this report.