<prompt> Answer this question truthfullyWhat is type I glycogen storage disease?  <response>: <reason> Glycogen storage disease type 1 GSD 1 presents first as an average age of 6 months 1 - 12 months. If left untreated, glycogen storage disease type 1 develop complications including protruding abdomen due to marked hepatomegaly storage of glycogen and fat, short stature, truncal obesity, rounded doll-like face, and wasted muscles. Common complications of glycogen storage disease type I include bleeding diathesis, chronic renal failure, hepatic adenoma, anemia, and inflammatory bowel disease specifically in GSD type 1b. 