Well, to put it simply, agave is very low on the glycemic index compared to other forms of sweetener. (skinnyfit.com)
Luckily, there are more and more companies choosing to use healthier forms of sweeteners rather than white sugar or corn syrup. (mindbodygreen.com)
I also prefer to use natural forms of sweeteners but if you are still transitioning to whole foods, feel free to use what you have. (beyondthepeel.net)