Out of curiosity (and a slight hope that I'd detect something was 'wrong') I did a GI Effects test from Metametrix.
I got relatively within-range numbers, mostly with the exception of the SCFA section. Anyone able to shed any light?
- My total SFCA were low (38 mM/g)
- In terms of my percentages: acetate was low (52), and butyrate/propionate/valerate were all subsequently high (25, 25, 3.6)
Not sure what to make of any of this, if at all. Any input appreciated! thank you!
asked byJCD (10)
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on August 20, 2012
at 09:42 PM
Check out bacteria boss Lucas Tafur's writing on the subject: http://www.lucastafur.com/2011/10/bifidobacteria-butyrate-and.html
"Of the three main SCFA produced in the colon, only acetate has shown a correlation between fecal concentration and absorption...acetate concentration in fecal samples reflect more precisely acetate absorption rather than production. Thus, lower fecal acetate levels with reduced carbohydrate reflect more acetate absorption".
"Low carbohydrate diets seem to reduce the fecal concentration of SCFA in the short term...fecal concentrations of SCFA are not good indicators of SCFA colonic production".
Not sure how much carbs you eat, but that link has lots on reduced carbohydrate intake and gut bacteria and may give you some insight.
on August 21, 2012
at 10:34 PM
JDC, it is difficult to say anything very meaning from a single test results like this.
SCFAs are produced and absorbed in quite a dynamic way so there are several factors that can influence the amount found in your poo on any particular day.
The lab test does not seem to provide very reliable reference ranges for what they consider normal making it difficult to interpret what they mean by a low level.
There is quite a large degree of variability between individuals in the concentration of these SCFAs found in the poo. Also it matters more how much are produced and absorbed which is not easy to determine from a fecal sample.
Personally I would not worry about these results.
on August 21, 2012
at 02:46 AM
It means your not making any 4 carbon fats from your the nondigestible carbs in your colon. It means your gut flora is not optimal in your anaerobic cauldron (colon) but it is fixable. Keep fighting for the knowledge that will give you the wisdom you seek.