Glycogen is a branched-chain polymer of glucose and serves as a dynamic but limited reservoir of glucose, mainly in liver, skeletal muscle, heart, and sometimes the central nervous system and the kidneys.1 There are a number of different enzymes involved in glycogen synthesis, utilisation and breakdown within the body.
This is a companion discussion topic for the original article at https://patient.info/doctor/paediatrics/glycogen-storage-disorders-pro