Early detection and treatment of diabetes can decrease the risk of developing the complicationsharmful effects of diabetes such as damage to the eyes, heart, blood vessels, nervous system, teeth and gums, feet and skin, or kidneys. Studies show that keeping blood glucose, blood pressure and low-density lipoprotein cholesterol levels close to normal can help prevent or delay these problems.X of diabetes. The following symptoms of diabetes are typical. However, some people with type 2 diabetesa condition characterized by high blood glucose levels caused by either a lack of insulin or the body's inability to use insulin efficiently. Type 2 diabetes develops most often in middle-aged and older adults but can appear in young people.X have symptoms so mild that they go unnoticed.