The Claim
Cronometer overestimates dietary fibre, vitamin A, and vitamin D intakes compared to the Canadian Nutrient File in Canadian endurance athletes, with statistically significant differences (p < 0.001 for fibre, p = 0.013 for both vitamins) and small-to-medium effect sizes (Cohen’s d = 0.385 for fibre, 0.208 for vitamin A, 0.318 for vitamin D), likely due to discrepancies in fibre definition and variations in food fortification practices across brands and countries.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
The Cronometer app tends to show higher amounts of fibre and vitamins A and D in the diets of Canadian endurance athletes than what's actually in the official Canadian food database — probably because it counts fibre differently and includes fortified foods from other countries.
See the scientific wording
Cronometer overestimates dietary fibre and vitamins A and D compared to the Canadian Nutrient File in Canadian endurance athletes, with statistically significant differences (p < 0.001 for fibre, p = 0.013 for both vitamins) and small-to-medium effect sizes (d = 0.385, 0.208, 0.318), likely due to differences in how fibre is defined and varying food fortification practices across brands and countries.
What the research says
1 studyThe study found that Cronometer isn't perfect for measuring fibre and vitamins A and D in Canadian athletes, which matches the claim. The differences are likely because of how foods are labeled and fortified differently.
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.