This diet was associated with obesity, glucosuria, and ketosis. Defects in SGLT2 prevent effective reabsorption of glucose, causing familial renal glucosuria. Women with GDM may have high glucose levels in their urine (glucosuria). Mutations in this gene are also associated with renal glucosuria. Small amounts of glucose in the urine (mild glucosuria) may occur intermittently in this disorder. Persistent hyperglycemia and glucosuria are very commonly seen. If glucosuria persisted, he fasted his patients. Once that situation resolved, the glucosuria disappeared. Specific carbohydrate metabolism disorders able to be identified include Diabetes Mellitus, Glucosuria and Ketonuria.