Agave syrup is a man-made sweetener which has been through a complicated chemical refining process of enzymatic digestion that converts the starch and fiber into the unbound, man-made chemical fructose. While high fructose agave syrup won’t spike your blood glucose levels as High Fructose Corn Syrup is reported to do, the fructose in it may cause mineral depletion, liver inflammation, hardening of the arteries, insulin resistance leading to diabetes, high blood pressure, cardiovascular disease and obesity.
There are a few different natural sweeteners out there that give you your sweet fix without putting a lot of stress on your body and its organs. Try Stevia, this substitute is a lot sweeter than table sugar so if baking, use about half of what you would normally.
Hope that helps.