Both Yacon syrup and Yacon powder benefits have been touted on the famous Doctor Show. Both options will bring similar benefits, as they both contain FOS ( fructooligosaccharides ), which is the most essential element.yacon-root.jpg Yacon powder acts as a prebiotic, which helps control organisms that live in our intestinal systems, such as Bifidus and Lactobacillus. Yacon is very low on the glycemic index scale. The glycemic index is a measurement of how quickly blood sugar levels (glucose in the blood) rise after eating a particular food. Results of clinal testing 73% of women lost weight Most women lost more than 5 pounds Average weight loss was 2.9 pounds Average decrease in waist cercumfrance was 1.9 inches 68% recommended Yacon as a weight loss tool