Total fiber was inversely associated with weight and waist circumference change during the study period. For a 10 gram/day higher total fiber intake, there was an estimated 39 g/year weight loss and waist circumference decreased by 0.08 cm/year. A 10 gram/day fiber intake from cereals results in 77 g/year weight reduction and 0.10 cm/year reduction in waist circumference. Fruit and vegetable fiber was not associated with weight change but had a similar effect on waist circumference as total and cereal fiber intake.
Over a period of 6.5 years, weight gain and increases in waist circumference would be expected in typical adults. The findings of this research may support a beneficial role of higher intake of dietary fiber, especially cereal fiber, in prevention of weight and waist circumference gain.
Am J Clin Nutr Vol. 91, No. 2, 329-336, February 2010