What happens if the body stops producing insulin?

Its the same thing that happens if a type 1 diabetic stops taking their insulin. Their blood sugars start to increase. First symptoms they get are lethargy, increased hunger, increased thirst and increased urination. If left unchecked, their blood sugars continue to rise. They then go into a state called Diabetic Ketoacidosis (DKA). This is when the body, not being able to use its glucose stores, starts to produce ketones from stored fat. Symptoms at this stage include; vomiting, gasping breaths, confusion and abdominal pain. Typically by this stage, they are also significantly dehydrated. DKA is a medical emergency. If left untreated it can result in coma, and ultimately, death.