Can diabetes cause weight loss?

My husband has been diagnosed with diabetes 3 months ago and he has lost 20 pounds since then. What should we do?

In poorly controlled diabetes the insulin supply which regulates the proper utilization of nutrients involved in growth is deficient. Food ingredients that normally would serve to grow tissue and give us strength are wasted, usually  lost in the urine. The cellular machinery that serves to process the sugar , protein and fat from our diet malfunctions without adequate insulin in the mix. Patients lose weight and strength. Brain function is affected  and people's concentration, memory and mood suffer. Insulin supply should be restored either by administering insulin or by prescribing medication that improves the body's insulin production and insulin activity. Weight gain will result. Care must be exercised because too much insulin can promote obesity.