Definition of Dietary Fiber
The term dietary fiber refers to plant and nonplant (e.g. animal, fungal) dietary substances that cannot be digested by human gastrointestinal enzymes. [1] This is what glucomannan is.
Classification of Dietary Fiber
Dietary fibers are classified based on their solubility in water into either soluble or insoluble [1]. Fibers, which are used for weight [...]

Glucomannan is More than a safe weight loss ingredient
Glucomannan is a fermentable, soluble and highly viscous dietary fiber, which is a derivative from the root of the konjac plant, native to Asia. Initial data suggests that glucomannan may encourage weight loss. This study enlightens studies using Glucomannan for weight loss besides [...]