The Claim
Humans are unable to digest and ferment cellulose effectively, resulting in minimal energy extraction from dietary fiber, in contrast to herbivores that possess specialized digestive systems enabling efficient fermentation of cellulose.
What the research says
Not yet evaluated
We are still looking at what the research says.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
People can't break down tough plant fiber like cows or rabbits can, so we get almost no energy from it — their stomachs are built for that job, but ours aren't.
See the scientific wording
Humans lack the digestive capacity to ferment cellulose and derive minimal energy from dietary fiber, unlike herbivores with specialized digestive systems.
What the research says
1 studyStudy: Quantifying the varying harvest of fermentation products from the human gut microbiota
The study shows that gut bacteria help people get a meaningful amount of energy from fiber in their diet, especially when they eat more plant-based foods, which goes against the idea that humans get almost no energy from fiber.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.