soluble unsolable fiber

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soluble unsolable fiber


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Old 02-02-2013, 07:58   #1
 
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Default soluble unsolable fiber

Since starting a ketogenic diet where I am trying to keep carb ratio to 5% which i have but by using Net carbs only since i have been deducting Dietary fiber from the total carb count. After looking a bit more into fiber should be deducting it seems that some fiber is digested and ends up as calories. Regarding keeping to ketogenic 5% should i be using total NET CARBS or deducting the Dietary Fiber?

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Fiber contributes less energy (measured in Calories or kilojoules) than sugars and starches because it cannot be fully absorbed by the body. Sugars and starches provide 4 Calories per gram, and the human body has specific enzymes to break them down into glucose, fructose, and galactose, which can then be absorbed by the body. The human body lacks enzymes to break down fiber. Insoluble fiber does not change inside the body, so the body cannot absorb it and nutritionists say that it contributes 0 Calories per gram. Soluble fiber is partially fermented, with the degree of fermentability varying with the type of fiber, and contributes some energy when broken down and absorbed by the body. Dietitians have not reached a consensus on how much energy is actually absorbed, but some approximate around 2 Calories (8.5 kilojoules) per gram of soluble fiber. Regardless of the type of fiber, the body absorbs fewer than 4 Calories (16.7 kilojoules) per gram of fiber, which can create inconsistencies for actual product nutrition labels. In some countries, fiber is not listed on nutrition labels, and is considered 0 Calories/gram when the food's total Calories are computed. In other countries all fiber must be listed, and is considered 4 Calories per gram when the food's total Calories are computed (because chemically fiber is a type of carbohydrate and other carbohydrates contribute 4 Calories per gram). In the US, soluble fiber must be counted as 4 Calories per gram, but insoluble fiber may be (and usually is) treated as 0 Calories per gram and not mentioned on the label

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Old 02-02-2013, 08:01   #2
 
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little misprint with words Doh! but no edit button atm.

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Old 02-02-2013, 08:15   #3
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Originally Posted by Zuko View Post
Since starting a ketogenic diet where I am trying to keep carb ratio to 5% which i have but by using Net carbs only since i have been deducting Dietary fiber from the total carb count. After looking a bit more into fiber should be deducting it seems that some fiber is digested and ends up as calories. Regarding keeping to ketogenic 5% should i be using total NET CARBS or deducting the Dietary Fiber?

wiki...
The fermentation of fiber can produce some "calories", but they are only in the form of short-chain fatty acids. They cannot produce any glucose and are thus irrelevant to BG control. Deducting them is more accurate (assuming the label is accurate).

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Salim Morgan, T2
66 Years
DX: 9/2009 A1C=10.7
A1C 2/2010: 6.7 (DX + 4 months)
A1C 5/2010: 6.0 (DX + 8 months)
A1C 8/2010: 5.7 (DX + 11 months)
A1C 11/2010: 5.1 (DX + 14 months)
A1C 9/2011: 5.6 (DX + 2 years)
A1C 7/2012: 5.5 (DX + 2 years 10 months)
A1C 1/2019: 5.5
Diet: Approximately C:10;P:15;F:75 (as % calories)
Exercise: Not much. Stairs at home & work.
NO MEDS, No Highs, No Lows
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Old 02-02-2013, 08:26   #4
 
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For BS yes but for weight loss?

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Old 02-02-2013, 08:29   #5
 
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btw smorgan i just changed all my foods in fitday to include solable fiber

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Old 02-02-2013, 18:42   #6
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For BS yes but for weight loss?
Good question. I'm pretty sure that SCFAs can only be used for energy and not get stored as fat, but haven't seen anything definitive on this. They are not discussed as much as other nutrients. They're way more important to cows than humans. They rely almost entirely on fermentation of fiber for their nutrition. Humans have a colon which can do it to some extent, but can live just fine without it, digesting things more directly higher up the intestine. Much of what is produced in the colon is either excreted with the waste or utilized by the cells right there in the colon wall. And, since we can live without ever eating fiber, I highly doubt it has any critical role in anything.

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Salim Morgan, T2
66 Years
DX: 9/2009 A1C=10.7
A1C 2/2010: 6.7 (DX + 4 months)
A1C 5/2010: 6.0 (DX + 8 months)
A1C 8/2010: 5.7 (DX + 11 months)
A1C 11/2010: 5.1 (DX + 14 months)
A1C 9/2011: 5.6 (DX + 2 years)
A1C 7/2012: 5.5 (DX + 2 years 10 months)
A1C 1/2019: 5.5
Diet: Approximately C:10;P:15;F:75 (as % calories)
Exercise: Not much. Stairs at home & work.
NO MEDS, No Highs, No Lows
Grandkids: 22
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