This document provides information about galactosemia, a genetic disorder that prevents the body from breaking down the sugar galactose. It discusses the types of galactosemia, including classic galactosemia and Duarte galactosemia. Classic galactosemia is treated by eliminating galactose from the diet as it can cause serious damage if not broken down properly. The disorder is diagnosed through newborn screening and confirmed with genetic testing. Lifelong treatment involves avoiding dairy products to prevent galactose intake while supplementing lost nutrients.