Last updated September 1, 2026
Key finding
Stool weight increased from 165 ± 53 g/day to 216 ± 63 g/day (P = 0.02).
This study evaluated the impact of high-fiber diets on calcium and phosphorus balance in individuals with type 2 diabetes, finding significant changes in stool weight and urinary excretion.
Quick read
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EvidenceScore™
Moderate
Study type
RCTs
Follow-up
Short-Term (≤3 mo)
Risk of bias
Some Concerns
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Plain-language summary
A plain-language read of the study’s main message and where it applies.
Study focus
This study evaluated the impact of high-fiber diets on calcium and phosphorus balance in individuals with type 2 diabetes, finding significant changes in stool weight and urinary excretion.
Understanding how dietary fiber affects mineral balance is crucial for managing type 2 diabetes. These findings could inform dietary recommendations to help optimize health outcomes for individuals with diabetes, potentially reducing complications related to mineral imbalances.
The study's sample size may limit the generalizability of the findings. The duration of the intervention may not capture long-term effects. Only two dietary interventions were compared, limiting broader dietary conclusions.
Published in
Publication details and source links for this paper.
Meena S, Manisha C, Beverley A, et al. A high-fiber diet rich in soluble fiber has a small impact on calcium and phosphorus balance in subjects with type 2 diabetes. Diabetes Care. 2009;32(6):990-995. doi:10.2337/dc09-0126
Stool weight increased by 51 g/day (P = 0.02) in the high-fiber diet group.
24-h urinary calcium decreased by 0.9 mmol/day (P = 0.003) with the high-fiber diet.
24-h urinary phosphorus decreased by 3.2 mmol/day (P = 0.003) with the high-fiber diet.
Evidence network
Understand where this research contributes within the broader evidence network.
This study contributes evidence to High-fiber diet, Moderate-fiber diet and 24-h urinary calcium excretion, 24-h urinary phosphorus excretion, Increased stool weight with high-fiber diet, and 1 more.
This study contributes evidence to
Primary intervention
High-fiber diet
Primary outcomes
Primary intervention
Intervention and outcome relationships this study adds to the evidence network.
Editorial context
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Evidence network role
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Related topics
8
Evidence pairs
0
Related studies
Core evidence
The primary outcomes reported in this study.
High-fiber diet → 24-h urinary calcium excretion
High-fiber diet → 24-h urinary calcium excretion
High-fiber diet → 24-h urinary phosphorus excretion
High-fiber diet → 24-h urinary phosphorus excretion
High-fiber diet → Increased stool weight with high-fiber diet
High-fiber diet → Increased stool weight with high-fiber diet
Moderate-fiber diet → 24-h urinary calcium excretion
Moderate-fiber diet → 24-h urinary calcium excretion
Moderate-fiber diet → 24-h urinary phosphorus excretion
Moderate-fiber diet → 24-h urinary phosphorus excretion
Moderate-fiber diet → Increased stool weight with high-fiber diet
Moderate-fiber diet → Increased stool weight with high-fiber diet
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Relationships organized using the Dediabetes Evidence Intelligence™ framework.
This study contributes to evidence on High-fiber diet and 24-h urinary calcium excretion, High-fiber diet and 24-h urinary phosphorus excretion.
This study contributes to the evidence on the following intervention-outcome relationships.
Diet and Nutrition
Diet and Nutrition
Diet and Nutrition
Curated evidence collections and hubs this study is part of.
All studies measuring 24-h urinary calcium excretion
Measures 24-h urinary calcium excretion as a key outcome.
All studies measuring 24-h urinary phosphorus excretion
Measures 24-h urinary phosphorus excretion as a key outcome.
All studies on High-fiber diet
Contributes to High-fiber diet evidence base.
All studies measuring Increased stool weight with high-fiber diet
Measures Increased stool weight with high-fiber diet as a key outcome.
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1 results
1 results
1 results
1 results
1 results
Generated from the study's connected evidence using Evidence Intelligence™.
High-fiber diet appears to improve 24-h urinary calcium excretion.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
24-h urinary calcium excretion
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
High-fiber diet appears to improve 24-h urinary phosphorus excretion.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
24-h urinary phosphorus excretion
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
High-fiber diet appears to improve increased stool weight with high-fiber diet.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Increased stool weight with high-fiber diet
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
High-fiber diet appears to improve serum calcium.
ConsistencyScore™: Consistency cannot yet be determined from the available evidence.
Ranked evidence signals
Serum calcium
EvidenceScore™ Emerging | EvidenceScore™ 59.0 | strong positive | ConsistencyScore™ Unclear | 1 study
Why this answer: This answer is based on a single supporting study.
Limitations
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