Fitting Into the Whole Foods Category
Guar gum is a soluble fiber that is derived from the guar bean and has not been shown to have any serious side effects, other than gas and bloating. On the contrary, it has actually been shown to have health benefits, including lowering blood glucose, total body weight, and LDL cholesterol.
Guar Gum and Gut Issues
The complaints of gas and bloating tend to occur in trials with levels of guar gum much higher than what we would typically encounter in our daily diets. On the other hand, if you already have gut issues, such as IBS, you might want avoid guar gum (source).