Study
Yeast Mannans May Help Ease Constipation in Older Adults
Taking yeast mannans daily increased stool frequency and was well-tolerated by older adults.
Summary
In plain language
A recent study explored how yeast mannans, a type of dietary supplement, affect digestion in older adults. Researchers found that taking 15 grams per day of yeast mannans for two weeks helped increase stool frequency in participants, which may be beneficial for those experiencing constipation. Importantly, the supplement was well-tolerated, with no significant increase in common digestive complaints like gas or cramping. This research suggests yeast mannans could be a gentle way to support digestive health in seniors, making it a topic worth discussing with your healthcare provider.
Details
Use the full description to understand the study design, methods, and the limits of the findings.
This study was designed as an open-label pilot and involved participants aged around 71 years. They took 15 grams of yeast mannans daily for two weeks while researchers monitored digestive symptoms and stool frequency.
Participants reported a slight increase in stool frequency, from 1.35 to 1.53 stools per day, suggesting improved regularity.
Common digestive symptoms like gas and cramping did not significantly worsen, indicating good tolerance.
The study's small size is a limitation, and further research is needed to confirm these findings for broader populations.
Seniors interested in improving regularity may consider discussing yeast mannans with their healthcare provider to see if it's right for them.
Full Study
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Yeast Mannans May Help Ease Constipation in Older Adults
Published October 2026
Opens at the publisher · external site · may require institutional access
Research Quality Score
Scored October 26, 2026 using rubric mq-1.8_2026-07-06.
Assessment
The study's open-label design and lack of bias control limited its methodological rigor. However, it was transparent in reporting and relevant to the target population. The absence of a control group and potential conflicts of interest due to industry funding were significant drawbacks. The study's registration and data sharing were positive aspects.
Category Breakdown
| Category | Score | Rating |
|---|---|---|
| Study design | 3.3/10 | |
| Bias control | 0.0/10 | |
| Statistical methods | 5.0/10 | |
| Reporting completeness | 10.0/10 | |
| Conflicts & funding | 0.0/10 | |
| Replication | 0.0/10 | |
| Relevance to chosen population | 10.0/10 | |
| Journal Reliability | 5.0/10 |
Additional Notes
This open-label pilot study evaluated the effects of yeast mannans on gastrointestinal symptoms and stool frequency in older adults. It found minimal gastrointestinal symptoms and a trend towards increased stool frequency, suggesting prebiotic potential.
Assessed on the study's full text across 8 quality dimensions; conflict-of-interest disclosures were reviewed.
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