Will too little sleep lead to diabetes?

Increases risk.. In the genetically susceptible patient- ie: has family history altered sleep/wake cycle alters the biologic clock- leads to peripheral Insulin resistance, increased sympathetic tone, both of which can increase risk of diabetes.
Not related to sleep. Getting too little sleep does not cause diabetes. Type i diabetes is an autoimmune disease caused by one's immune system damaging the insulin-producing cells. Type 2 diabetes is the result of overusing the insulin-producing cells to process large amounts of dietary sugars & carbohydrates. If one is not sleeping but is staying up eating through the night, he theoretically could get type 2 diabetes.