Why is that when i eat potatoes or pastry my blood sugar levels go through the roof and I don dare thinking about a chinese take-away?
The most obvious reason why potatoes and pastry make your blood glucose rise is the amount of starchy carbohydrate they have in them. Although potatoes, pasta, rice, bread and cereals taste savory when you eat them, your body turns them into glucose when you digest them, so they raise your blood glucose levels for quite a long time after you have eaten them. Starchy carbohydrates are an excellent source of glucose which we use for energy, but those with diabetes have to be a bit careful how much starchy carbohydrate foods we eat. It sounds as though you might find it useful to have a chat with a diabetes dietitian or your own practice nurse if your local GP practice runs a diabetes clinic, then you can discuss how different foods effect your blood glucose levels.