Preventing diabetes in Type 1 diabetics is not possible diabetes because the pancreas is faulty to begin with and does not produce any insulin. Thus immediate use of injecting insulin is prescribed. You usually find that Type 1 diabetics have had diabetes from childhood.
Type 2 diabetes however, is preventable. In order to prevent diabetes you should try and avoid becoming overweight or obese, and follow healthy eating guidelines which include eliminating refined carbohydrates, reducing alcohol consumption,increasing lean proteins, and consuming your daily 5 a day recommended portions of fruit and vegetables. Exercise is also a measure if used in conjunction with healthy eating can help to keep diabetes at bay.
Many studies have confirmed that the obesity epidemic in America and the UK is one of the prime reasons diabetes is on the increase.