Macro partitioning
Structurally intact plant cell walls physically encapsulate macronutrients (starch and lipids), limiting their bioaccessibility to digestive enzymes and thereby attenuating postprandial glycaemic and lipaemic responses.
To manage blood sugar and calorie intake, prioritize eating whole plant foods (like whole nuts, intact legumes, and whole grains) over processed versions (like nut butters, flours, or cooked-down grains). The physical structure of these whole foods traps nutrients inside cell walls, slowing down digestion and preventing sharp spikes in blood sugar and fat levels in your bloodstream. Processing foods (grinding, cooking extensively) breaks these walls, making the nutrients fully available and potentially causing larger metabolic responses.
The role of fibre in physically encapsulating/entrapping nutrients in particular has been identified as a major mechanism by which structurally intact plant tissues tend to be digested at a slower rate and to a lesser extent, thereby attenuating the postprandial rise in glycaemia and/or lipaemia
Why this rating
The paper is a review citing multiple in vivo and in vitro studies (references 6-8, 61) showing consistent physiological effects of intact vs. damaged cells.
Source
Re-evaluation of the mechanisms of dietary fibre and implications for macronutrient bioaccessibility, digestion and postprandial metabolism
Myriam M.-L. Grundy et al. · British Journal Of Nutrition · 2016
This is one finding among thousands. Every one is graded and traced to its source, so you can see what the evidence actually supports. Browse the research →