Researchers Link Vitamin B1 to Bowel Frequency
A new genetic study reveals 21 genomic markers that influence gut transit pace.
Updated on Oct. 20, 2026 in Nutrition
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Scientists have identified 21 genomes associated with stool frequency after analyzing data from 268,606 participants. The study also links higher thiamine intake to more regular bowel movements in a cohort of 98,449 UK individuals.
Why it matters
Understanding the biological pathways of gut motility is a critical step for developing new treatments for disorders like constipation and irritable bowel syndrome. This genetic map provides a foundation for future clinical research into digestive health.
The study identified 21 genomes that influence stool frequency, with 10 of these markers previously unreported. Researchers also found a correlation between higher thiamine intake and increased frequency among 98,449 UK participants.
The players
Gut
This is a peer-reviewed medical journal that publishes original research and clinical reviews concerning gastroenterology and hepatology.
The details
Researchers utilized genetic data to pinpoint specific biological pathways that regulate the pace of the digestive system. Genes such as SLC35F3 and XPR1 were found to play a vital role in how the body transports and utilizes vitamin B1, ultimately affecting gut motility.
Timeline
2025: Research suggested that an optimal stool frequency is once or twice daily.
- 2026-10-20
Study results were published in the journal Gut.
Health Landscape
This study advances the ongoing investigation into irritable bowel syndrome and constipation biology by mapping the specific genetic contributors to human gut pace. It highlights the growing effort to use large-scale DNA datasets to explain common digestive ailments.
This research clarifies the genetic factors influencing digestive regularity, which could eventually lead to new, personalized dietary or medical interventions. Readers should note that optimal stool frequency is considered to be once or twice daily.
The takeaway
The study suggests that vitamin B1 may play a tangible role in maintaining digestive regularity through specific genetic pathways. If you experience chronic bowel irregularities, consider discussing your dietary thiamine intake with a healthcare professional.
What happens next
Researchers are preparing to initiate lab experiments and clinical studies to further validate the role of vitamin B1 in gut motility.
Further reading
For more information on the latest digestive research, visit the Nutrition section.
Source note: This article includes information reported by HuffPost UK.
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