references
  
      Metamucil: "Metamucil Orange Smooth Powder With Real Sugar"
    
      Metamucil: "What Is Psyllium Husk?"
    
      Journal of the Academy of Nutrition and Dietetics: "Position of the Academy of Nutrition and Dietetics: Health Implications of Dietary Fiber"
    
      World Journal of Gastroenterology: "Effects of Cereal Fiber on Bowel Function: A Systematic Review of Intervention Trials"
    
      Journal of the American Association of Nurse Practitioners: "Fiber Supplements and Clinically Proven Health Benefits: "How to Recognize and Recommend an Effective Fiber Therapy"
    
      Oregon State University Linus Pauling Institute: "Fiber"
    
      Harvard T.H. Chan School of Public Health: "Fiber"
    
      Journal of Diabetes Investigation: "Higher Intake of Fruits, Vegetables or Their Fiber Reduces the Risk of Type 2 Diabetes: A Meta‐Analysis"
    




Fiber occurs naturally in plant-based foods.

Image Credit: GYAN PRATIM RAICHOUDHURY/iStock/GettyImages

Image Credit: GYAN PRATIM RAICHOUDHURY/iStock/GettyImages

      Metamucil: "Metamucil Orange Smooth Powder With Real Sugar"
    
      Metamucil: "What Is Psyllium Husk?"
    
      Journal of the Academy of Nutrition and Dietetics: "Position of the Academy of Nutrition and Dietetics: Health Implications of Dietary Fiber"
    
      World Journal of Gastroenterology: "Effects of Cereal Fiber on Bowel Function: A Systematic Review of Intervention Trials"
    
      Journal of the American Association of Nurse Practitioners: "Fiber Supplements and Clinically Proven Health Benefits: "How to Recognize and Recommend an Effective Fiber Therapy"
    
      Oregon State University Linus Pauling Institute: "Fiber"
    
      Harvard T.H. Chan School of Public Health: "Fiber"
    
      Journal of Diabetes Investigation: "Higher Intake of Fruits, Vegetables or Their Fiber Reduces the Risk of Type 2 Diabetes: A Meta‐Analysis"