What we know about natural coconut sap sugar is that it is considered very “Low GI”, and in fact it ranks around 35 on the index.
Comparatively cane-sugar (any sort of refined sugar including raw and brown) ranks as fairly “High GI” in the 65-100 range per serving.
From the professional & TV host Dr.Oz:
Dr. Oz says coconut sugar is a better choice than refined sugar because it won’t lead to fluctuating blood sugar levels. Check out the graph he shares! It is pretty impressive. Coconut sugar is unrefined, therefore it retains all of its natural minerals and vitamins. You can use it as a one-to-one replacement for both white and brown sugar.