Oplosbare vezels slecht voor CVS patiënten?
Geplaatst: 27 jan 2011, 09:42
Fragment uit een interview met dr. Logan:
"In recent years so-called prebiotics have been touted for boosting levels of Lactobacillus and Bifidobacteria in the gut. It is quite clear that prebiotics (inulin, chicory root, fructo-olligosaccharides) can increase both Lactobacillus and Bifidobacteria, however it remains unknown if they are also promoting undesirable bacteria as well. There have been hints that they can.
There are now two causes of concern for CFS patients and prebiotics – i. prebiotics have been shown to promote intestinal permeability, irritate the gut lining (this is a massive problem, especially when considering the new studies from Dr Michael Maes who documnented intestinal permeability in CFS) ii. prebiotics can increase the amount of lactate produced in the gut (now that we know there is already excess lactate production and/or inadequate lactate clearance, this is an obvious caveat).
When too much fermentable fiber shows up in the large intestine there is a massive uptick in the production of D-lactate. Since, in CFS, we now know there is already over-production of D-lactate the blanket statements to eat more fiber may not be well suited to CFS. For example, animal studies show that excessive D-lactate production, due to excess fermentable carbohydrates showing up in the distant portion s of the gut, can increase aggressive an anxious behavior. It completely throws them off.
The same phenomenon has been written up numerous times in cases of short bowel syndrome. These are individuals who have had a portion of the small intestine removed, they are more prone to the over-fermentation of fiber-rich carbohydrates in the large intestine and an excess amount of D-lactate is produced. They can experience brain fog, lowered mood state, hypothamic dysfunction and anxiety when transient elevations in D-lactate occur.
Since we know that CFS patients have both bacterial overgrowth and excess D-lactate production (and/or lack of D-lactate clearance) a similar situation may be occurring. Ultimately, excess prebiotics and even excess Lactobacillus strains may worsen the situation in short bowel syndrome, and perhaps CFS as well.
I was very interested in Dr Shungu’s work as well. It certainly suggests that if excess lactate is making it to the brain (and we already know that systemic lactate can cause anxiety in adults with no history of anxiety) it can have multiple implications. Obviously, we have just begun to scratch the surface of this research, however in moving forward we should be very selective of the stains we use for CFS clinical trials.
While most adults and children in developed nations may need more fiber, those of us with CFS may actually be adding fuel to the fire. An elemental (liquid food) diet has been shown to help eradicate small intestinal bacterial overgrowth and gut excess H2S production. At this point we need more concrete studies although the soluble fiber in oats, barley, rye and root vegetables will be more likely to fuel fermentation and increase lactate production"
"In recent years so-called prebiotics have been touted for boosting levels of Lactobacillus and Bifidobacteria in the gut. It is quite clear that prebiotics (inulin, chicory root, fructo-olligosaccharides) can increase both Lactobacillus and Bifidobacteria, however it remains unknown if they are also promoting undesirable bacteria as well. There have been hints that they can.
There are now two causes of concern for CFS patients and prebiotics – i. prebiotics have been shown to promote intestinal permeability, irritate the gut lining (this is a massive problem, especially when considering the new studies from Dr Michael Maes who documnented intestinal permeability in CFS) ii. prebiotics can increase the amount of lactate produced in the gut (now that we know there is already excess lactate production and/or inadequate lactate clearance, this is an obvious caveat).
When too much fermentable fiber shows up in the large intestine there is a massive uptick in the production of D-lactate. Since, in CFS, we now know there is already over-production of D-lactate the blanket statements to eat more fiber may not be well suited to CFS. For example, animal studies show that excessive D-lactate production, due to excess fermentable carbohydrates showing up in the distant portion s of the gut, can increase aggressive an anxious behavior. It completely throws them off.
The same phenomenon has been written up numerous times in cases of short bowel syndrome. These are individuals who have had a portion of the small intestine removed, they are more prone to the over-fermentation of fiber-rich carbohydrates in the large intestine and an excess amount of D-lactate is produced. They can experience brain fog, lowered mood state, hypothamic dysfunction and anxiety when transient elevations in D-lactate occur.
Since we know that CFS patients have both bacterial overgrowth and excess D-lactate production (and/or lack of D-lactate clearance) a similar situation may be occurring. Ultimately, excess prebiotics and even excess Lactobacillus strains may worsen the situation in short bowel syndrome, and perhaps CFS as well.
I was very interested in Dr Shungu’s work as well. It certainly suggests that if excess lactate is making it to the brain (and we already know that systemic lactate can cause anxiety in adults with no history of anxiety) it can have multiple implications. Obviously, we have just begun to scratch the surface of this research, however in moving forward we should be very selective of the stains we use for CFS clinical trials.
While most adults and children in developed nations may need more fiber, those of us with CFS may actually be adding fuel to the fire. An elemental (liquid food) diet has been shown to help eradicate small intestinal bacterial overgrowth and gut excess H2S production. At this point we need more concrete studies although the soluble fiber in oats, barley, rye and root vegetables will be more likely to fuel fermentation and increase lactate production"