Re: Xylitol

There are two kinds of Xylitol, one made from hardwood the other from Genetically-Modified-Organisms corn.
The hardwood kind has had decades of usage while the Genetically modified corn does not.

To stop yohurt from working all you need is a bump in PH levels so this is not a great test, the article below does use the non Genetically-Modified-Organisms kind...


Gut microflora interactions with xylitol in the mouse, rat and man.
------------------------------------------------------------------
The influence of dietary xylitol on the quantity and quality of faecal microflora was studied in Wistar albino rats, CD-1 mice and healthy human volunteers. In animals, the effects of xylitol adaptation and of 4-wk xylitol feeding were examined. No major changes in the numbers of total aerobic or anaerobic bacteria, aerobic streptococci, anaerobic streptococci or yeasts were observed, although there was evidence of a dose-dependent decrease in the numbers of aerobic streptococci in the faeces. However, xylitol feeding caused a clear shift in the rodent faecal microbial population from Gram-negative to Gram-positive bacteria. In human volunteers a similar shift was observed even after a single 30-g oral dose of xylitol. All animals were capable of adapting to 20% dietary xylitol and an accompanying enhancement of the ability of caecal and faecal flora to utilize xylitol was observed.

***Gram-negative are usually the bad ones.