phoenix said:
"Worryingly about this product is the amount of Polyol. In 25g there is 14.5g of the sweetener, almost 3/4 of the recommended daily allowance. "
Tests for non digestibility are somewhat arbitary. Before the genetics were understood, non digestibility of the sugar found in milk known a lactose was termed
lactose intolerance, as if there was some sort of metabolic disorder in those who suffered from it. Moreover, some people could drink a glass of milk before falling ill whilst others got sick at the lick of an ice cream. There were 'degrees of intolerance' but the condition was assessed by asking the subject to drink a certain amount of milk and recording the after effects. One was either lactose tolerant or lactose intolerant depending on which side on this rather arbitary line one fell. A similar condition exists with fructose malabsorbtion and another known as hereditary fructose intolerance.
As research has started to throw light on these matters, lactase persistence in adulthood has become the focus. That is, several human population groups continue to produce the enzyme lactase in adulthood. Production is normally switched off after puberty. Moreover, 4 separate and independent genes have been identified, meaning that at various times in [recent] human evolutionary history, different genetic mutations have occured in some population groups independently which have led to the production of the lactase enzyme not being switched off.
What we can and cannot eat is probably very much dependent on our genetic history. Humans are still evolving and although the vermiform appendix is widely seen as a genetic throwback to our leaf eating days, we still produce this fully developed organ. Why does it persist? The latest research suggests that the appendix is still of some [new] use in some humans.
Biofilms in the large bowel suggest an apparent function of the human vermiform appendix.
http://www.sciencedirect.com/science/ar ... 930700416X
Whilst we understand the basics of food sources and the digestive system and the role of enzymes and hormones within the metabolism, the devil is in the detail which is probably going to be rather more important to the individual than it is to the human population in general.