The effect of soup on satiation.

We compared the influence of three solid/liquid preloads to a no-preload condition given at lunchtime on hunger ratings and energy intake of the lunch and subsequent dinner in 12 lean and 10 overweight young men. The preloads (vegetables and water, strained vegetable soup, chunky soup) were of the same composition and volume but differed in distribution of nutrients between the liquid and the solid phases, and in the size of solid particles. Hunger ratings were reduced by the preloads; there was a significantly greater suppression of hunger after the chunky soup than after the vegetables and water. In both groups, the soups reduced energy intake at lunch, although the chunky soup had the most effect. In the overweight subjects, a reduced lunch intake was also followed by a reduced dinner intake. The benefit to weight control of large particles in soup should be evaluated.