A bowl of skinless tropical fruit.

Image Credit: Design Pics/Tomas del Amo/Design Pics/Getty Images If you’re struggling with a bout of mild-to-moderate diarrhea, adding fiber to your diet might help. Look for foods high in soluble fiber, which absorbs water in the digestive tract. Mixed with water, soluble fiber turns into a gel, resulting in firmer, bulkier stool that moves more slowly through your system. If you have severe or persistent diarrhea, however, skip the self-medication and visit your doctor for a diagnosis.

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Fiber-Rich Foods

Oatmeal, potatoes, bananas and soft, skinless fruits are rich in soluble fiber and may help with diarrhea. Sweet potatoes are an especially good soluble-fiber source, containing 2 grams per half-cup of flesh. For comparison, 1/2 cup of dry oatmeal contains 2 grams of soluble fiber, while the flesh of a medium baked potato contains 1 gram and a small banana contains just more than half a gram. The Dietary Guidelines for Americans 2010 recommends that you eat 14 grams of total fiber for every 1,000 calories, which works out to about 25 grams per day for women and 38 grams per day for men.

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  references
  
      University of Maryland Medical Center: Fiber
    
      MedlinePlus: Soluble vs. Insoluble Fiber
    
      University of Michigan Comprehensive Cancer Center: Nutritional Management  of Diarrhea
    
      Harvard University Health Services: Fiber Content of Foods in Common Portions
    
      GlobalRPh: Soluble Fiber Calculator
    
      U.S. Department of Agriculture and U.S. Department of Health and Human Services: 2010 Dietary Guidelines for Americans
       




  references
  
      University of Maryland Medical Center: Fiber
    
      MedlinePlus: Soluble vs. Insoluble Fiber
    
      University of Michigan Comprehensive Cancer Center: Nutritional Management  of Diarrhea
    
      Harvard University Health Services: Fiber Content of Foods in Common Portions
    
      GlobalRPh: Soluble Fiber Calculator
    
      U.S. Department of Agriculture and U.S. Department of Health and Human Services: 2010 Dietary Guidelines for Americans
    




A bowl of skinless tropical fruit.

Image Credit: Design Pics/Tomas del Amo/Design Pics/Getty Images

Image Credit: Design Pics/Tomas del Amo/Design Pics/Getty Images

      University of Maryland Medical Center: Fiber
    
      MedlinePlus: Soluble vs. Insoluble Fiber
    
      University of Michigan Comprehensive Cancer Center: Nutritional Management  of Diarrhea
    
      Harvard University Health Services: Fiber Content of Foods in Common Portions
    
      GlobalRPh: Soluble Fiber Calculator
    
      U.S. Department of Agriculture and U.S. Department of Health and Human Services: 2010 Dietary Guidelines for Americans