Diagnostic values for Diabetes Mellitus (DM)- Fasting blood sugar >110mg/dl and 2 hours after meal >200mg/dl.
If the blood sugar value is obtained in the borderline, it may be necessary to repeat the blood glucose estimation. Your doctor will help you decide your diagnosis along with other clinical examination. Diet and lifestyle modification will help you in mainting your sugar levels in range. Following are the general guidelines: Avoid overeating instead take four or five small meals in day, fresh fruits contain sugar fructose which does not need insulin for its metabolism and is well tolerated, so one must take fresh fruits dail, one of these must be orange or sweetlime.It is better to take whole fruit then fruit juice. Raw foods should be taken liberally. Do good food for diabetes are cucumbers,string beans, onion n garlic. Avoid spices, condiments, pickels, alcoholic beverages, tobacoo, tea coffe, meat, over boiled milk, white flour n products, refined, processed, stale and tinned food. Fats and oils should be taken sparingly. Lifestyle changes like stress free, brisk walks, back lifting exercises, yogic asanas, will also help.
Following link can help you further http://www.healthizen.com/health-centre/diabetes/diabetes.aspx