Mr. Lybrate-user, first and foremost is a person with diabetes should achieve excellent control of the blood sugar. Fasting should be around 100 mg and pp 150 to 160 mg. Hba1c% <7. Along with this there has to be a strict diet control. Plus daily exercise of at least 1 hour is a must. Both these help in better control of blood sugar. All green leafy vegetables are good, can be eaten in any quantity. Fruits permitted are papaya, pear, apple, water melon, orange, sweet lime, pomegranate and guava. To be avoided are mango, banana, chikkoo and grapes.