Which fiber is not digestible? The role of insoluble fiber in gut health
                                
                                
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                                    4 min read                                
                            
                                According to the Mayo Clinic, dietary fiber is the portion of plant food that remains largely unaffected by the digestive process in the body. The specific type of fiber that is not digestible, or at least not broken down by human enzymes, is known as insoluble fiber. Understanding this often-overlooked nutrient is key to improving your digestive health and overall nutrition diet.