This is a question best answered by your health care provider. As a diabetic, you need to be very careful with the amount and type of sugar you are consuming! These bars do have sugar in them and most are healthier complex sugars that combine with the fiber in the bars to give long lasting energy that doesn’t cause the dangerous sugar spikes you want to avoid. However, it is always best to talk to your doctor about your diet and exercise routine; they will be able to help ensure you are not putting yourself at risk for blood sugar issues if you eat too many of these bars on a regular basis. So talk to you doctor please before adding Cliff Bars to your normal routine!