While a healthy diet and exercise are essential for good health and maintaining a healthy body composition, adding additional soluble fiber offers additional benefits. When selecting fiber, many aspects must be considered. Each fiber is unique in terms of origin, purity, viscosity, and overall stability once ingested. In fact, the quality of a single type of fiber can vary considerably. Amorphophallus konjac, a tuberous plant, is a rich source of glucomannan, a soluble fiber. This fiber has an exceptional ability to absorb water and is one of the most viscous dietary fibers known.