Is a non communicable disease. And is not curable or reversible.
Though, Diabetes mellitus is not completely curable but, it is controllable to a great extent. So, you need to have thorough diabetes information to manage it successfully.
Who gets diabetes?

Diabetes can occur in anyone. However, people who have close relatives with the disease are somewhat more likely to develop it.(running in the family). Other risk factors include obesity, high cholesterol, high blood pressure, and physical inactivity. The risk of developing diabetes, also increases as people grow older. People who are over 40 and overweight are more likely to develop diabetes, although the incidence of type 2 diabetes in adolescents is growing.
Desired blood sugar of human body should be between 70 mg/dl -110 mg/dl at fasting state. If the level is more than 70—110, you are pre-diabetes. For information,visit the link bellow
http://www.healthylivingandfamilylife.com/diabetesmellitus/