Peach fiber, like other fruit-derived dietary fibers, is sometimes included in weight loss products or recommended as part of weight management strategies. The scientific rationale for its use is largely based on the general effects of dietary fiber rather than specific, robust studies involving peach fiber alone. Dietary fiber is known to promote satiety, slow gastric emptying, and modulate blood sugar responses, which can contribute to reduced overall caloric intake and assist with weight control. Several studies on dietary fiber in general (from sources such as oats, psyllium, and other fruits) have shown modest benefits for weight loss or weight maintenance.

However, there is minimal direct research on peach fiber itself in the context of weight loss. Most studies that mention peach fiber focus on its functional properties in food processing or its prebiotic effects rather than direct effects on body weight. The evidence supporting peach fiber specifically for weight loss is therefore extrapolated from broader dietary fiber research, which supports a potential benefit but does not allow for strong claims about peach fiber alone. As such, the use of peach fiber for weight loss is supported by moderate scientific reasoning, but direct evidence is limited, and the overall evidence rating is low to moderate.