I want to discuss dietary fibre some more.
Fermentation into butyrate has been discussed.
Eating higher dietary fibre in conjunction with a standard recommended diet helps bind some of the ingested toxins in that diet (as per Dr. Fung). Then that was discounted for keto eaters because the processed junk foods are removed from a whole food, well formulated ketogenic diet.
The benefit of dietary fibre via bile for removal of oxidised LDL is an interesting nuance.
But this food âtoxinâ issue is interesting.
I was listening to Dr. Dale Bredesen talking on the Fat Emperor Podcast with Ivor Cummins and he made a point about bioaccumulation of toxins in increasing trophic levels of food. So that animal foods, in particular fatty meats, will accumulate toxins. Those fat soluble toxins then accumulate in the human eating the fatty meats.
Then with rapid weight loss these toxins are released from the body fat stores. The role of fibre in this context is to collect the excreted toxins in the GI tract and bind them into faeces for removal from the body. However, if dietary fibre is inadequate, then the toxins potentially will not be bound in the fibre load for excretion but perpetually recirculate into the blood stream maintaining a toxic state.
Fibre is not an essential nutrient. But it may move across to a medicinal purpose with roles in toxin removal. So in the case of people following nutritional ketosis for weight loss it may prove beneficial. Or in the case of budget restricted eating meats with potentially higher toxin levels in the dietary fats, the dietary fibre may be beneficial.