Type 1 diabetes can develop in a person at any age, but commonly occurs during childhood or adolescence. The more common kind of diabetes is type 2, and it can develop at any age as well, but more commonly occurs in people older than 40. Symptoms of type 2 diabetes can be so mild that the diabetic person might not even notice them. When type 1 diabetes develops, the symptoms can come on quickly, within weeks or sometimes even days. When type 2 diabetes develops, it can take a number of years for symptoms to come on. If symptoms of either type of diabetes are left undiagnosed or untreated, the progression of the condition can cause significant harm to the body. Diabetes is a chronic disease which means it can't be cured, but it can be managed with professional help and is managed best during its early stages. If you have any of the signs or symptoms of diabetes, you should speak with a professional about it, as the earlier the condition is diagnosed, the sooner treatment can begin. If you have already been diagnosed with the condition, you'll need close medical follow-up until your blood sugar levels have stabilized, and after that, you'll need continual professional support.