Abstract
Dietary fibre supplementation has been used for many years as an adjunct in treatment of obesity. The lay public has always had a general feeling that bulking agents will facilitate weight loss, and a number of commercial products have been marketed under these assumptions. However, there have been surprisingly few studies, which have been carried with adequate scientific designs, to prove or disprove whether in fact dietary fibre supplementation increases the likelihood of weight loss. To a certain extent, this can be explained by methodological problems. A change in the diet towards more fibre rich products will affect the energy density of food intake. It may thus be difficult to differentiate between effects on body weight that are caused by a hypocaloric diet, rich in fibre, and by the intrinsic effects of dietary fibre.