Consequently, not all sources of fiber will have the same effect on satiety or body weight (167). Resistant starches are
proposed to provide many of the benefits of dietary fiber;
therefore, they may aid weight management, although it
has yet to be adequately demonstrated.
Accumulating evidence from rodent studies suggests
that replacing rapidly digestible starch with resistant starch
reduces body weight. Aziz et al. (170) found that a diet high
in resistant starch reduced body weight by 40% in dietinduced obese rats. However, the diet contained 23.4% resistant starch, an amount that may not be achievable in
human diets. Another study fed rats a diet containing 4%,
8%, or 16% resistant starch and found that consuming a
diet with >8% resistant starch reduced adiposity compared
with 0%, and for every 4% increase in resistant starch,
energy intake was reduced by 9.8 kJ/d (66). Long-term
studies on the effect of increasing resistant starch consumption on body weight in humans are required.
Despite the lack of long-term studies, there are several
reasons to believe that consuming resistant starch could aid
weight management in humans. First, because of the lower
calorie content, replacing rapidly digestible starch with resistant starch reduces the energy density of the diet