The guar bean is a high-fiber bean primarily grown in India. When the guar bean is split, soaked, and milled, it's known as guar gum, which helps to thicken and stabilize mixtures. Guar gum is a polysaccharide fiber that isn't digested by the body (though some of your gut bugs do enjoy it!). Guar gum has been studied for its potential cholesterol-lowering effects and potential to support appetite control.