Yacon, commonly known as Smallanthus sonchifolius , is a South American natural plant. Due to the possibility that it can promote intestinal health and rejuvenation, its popularity has increased in recent years. Inulin, a kind of fructooligosaccharide (FOS) found in yacon, works as a prebiotic in the digestive tract. This inulin is yacon's principal active ingredient. Prebiotics provide nourishment for the beneficial gut bacteria, which helps maintain a healthy microflora balance and is useful to the digestive system as a whole. Consuming yacon or taking yacon supplements may stimulate the production of short-chain fatty acids (SCFAs), which have been linked to reduced inflammation, improved insulin sensitivity, and enhanced immune function. Yacon may also aid in relieving constipation, promoting regular bowel movements, and assisting with weight loss by decreasing hunger and improving feelings of fullness. Yacon's capacity to achieve all of these things has been investigated. Even though there is some evidence that yacon can be effective for gut regeneration and other health applications, greater research is still required to gain a comprehensive grasp of its potential benefits and risks. This chapter's objective is to analyze the current progress in utilizing this plant and examine relevant studies conducted on Yacon and its functional characteristics.