Ingestible compositions that include one or more anionic soluble fibers are provided herein. An ingestible composition can be in solid or liquid form. In certain cases, a solid ingestible composition includes an extruded food product, such as a crispy, that includes one or more anionic soluble fibers. Liquid ingestible compositions that can include one or more alginate anionic soluble fibers and one or more pectin anionic soluble fibers are also provided. Methods for making ingestible compositions are provided, as well as methods for using the ingestible compositions, e.g., to induce satiety or to increase the viscosity of stomach contents.