Foods using high-glycemic index numbers (over 70) make glucose levels in addition to insulin levels spike fast. We realize there is a health threat. Mounting research suggests keeping glucose levels from spiking pays in many ways. Foods low on the blood sugar levels chart appear to stave off cardiovascular problems, prevent diabetes, help you evade serious negative effects if you have diabetes, even suppress your hunger so you shed weight, and even assist you to feel more energetic.