Indeed, some studies have shown that increased fibre intake lowers fat and protein absorption
One study demonstrated that a low fiber diet resulted in 8% higher caloric absorption. In short, fibre may decrease food intake, slow down absorption in the stomach and small intestine, then exit quickly through the large intestines. All of these effects are potentially beneficial in the treatment of obesity.
Fibre intake in Paleolithic diets is estimated to be 77-120 grams per day. Traditional diets are estimated to have 50g/day of dietary fibre. (驚)