Adding fiber to reduce net carbs

etompkinsdickey's Avatar

etompkinsdickey

01 Oct, 2011 08:21 AM

Dear Dr. Rosedale,
I would like to know if adding a fiber supplement such as psyllium when eating carbohydrates such as fruit or starchy carbohydrates, will reduce the net carbs being eaten at the meal. For example, if you made a smoothie that had a banana or apple in it but also drank a psyllium drink before the smoothie, would that reduce the carbohydrates of the banana by the fiber in the psyllium drink? Would adding fiber be a way of helping to manage carbs to allow a greater daily allowance or permit one to offset the effect of the carbs when a person finds himself in a situation where he doesn't have a lot of control over the food that is being served?

Thank you.
Elizabeth

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  1. 31 Posted by James Foreman on 16 Jan, 2019 03:24 AM

    James Foreman's Avatar

    OK, I will add my caveat concerning how adding fiber does or does not reduce carbs in a meal. It is generally accepted when figuring the net carbs of a recipe to add all the carbs from all ingredients and subtract all the fiber from all the ingredients to determine the net carbs of the resulting dish. If like some have indicated adding additional fiber does not reduce the net carbs then why do we subtract total fiber of the recipe from today carbs to calculate the net carbs of the dish:

  2. Support Staff 32 Posted by Ken on 16 Jan, 2019 10:57 AM

    Ken's Avatar

    Hi James

    The purpose of subtracting fiber from total carb is to find the total sugar content.

    • non-fiber carbs will eventually covert to sugar, which is not good -- so to find total sugar content, (even if it is said that no sugar is added) you subtract total fiber from total carb to find how much sugar actually there is.
    Total Carbohydrate is the: 
    dietary fiber and non-fiber combined
    
    Non-fiber will convert to sugar
    
    Fiber - is a carb, that does not convert to sugar
    
    Sugar - is a non-fiber carb
    
    Sugar Alcohol - is sugar
    
    Starches - converts to sugar
    

     

    Ken/   Rosedale Support Team

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