The Claim

Acute ingestion of 20 grams of either fructooligosaccharide or partially hydrolyzed guar gum reduces small intestinal transit by approximately 30% compared to placebo in healthy young adults, as measured by scintigraphy.

Source: Acute intake of fructooligosaccharide and partially hydrolyzed guar gum on gastrointestinal transit: A randomized crossover clinical trial.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
58score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

Consuming 20 grams of fructooligosaccharide or partially hydrolyzed guar gum slows the movement of food through the small intestine by about 30% compared to a placebo in healthy young adults, as measured by scintigraphy.

See the scientific wording

Acute ingestion of 20 grams of either fructooligosaccharide or partially hydrolyzed guar gum reduces small intestinal transit by approximately 30% compared to placebo in healthy young adults, as measured by scintigraphy, indicating a shared effect on slowing nutrient passage through the small intestine.

Why this might work

When these fibers are swallowed, they absorb water and thicken the contents of the small intestine. This thicker mixture resists movement, so the muscles of the intestine push it along more slowly, making food take longer to pass through.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Acute intake of fructooligosaccharide and partially hydrolyzed guar gum on gastrointestinal transit: A randomized crossover clinical trial.

    This study found that eating 20 grams of either of these two fibers slows down how fast food moves through the small intestine by about a quarter to a third, compared to eating a placebo — just like the claim said.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.