How eating a lot of sugar changes the gut's bacteria
Official title: Elucidating the consequences of dietary sugar consumption on the gut microbiota
Funded at Pennsylvania State Univ Hershey Med Ctr · NIH-11293449 · Data updated 2026-11-12
This project looks at how high-sugar diets change common gut bacteria and how those changes might affect gut inflammation and colorectal cancer risk.
Quick facts
| Grant type | R01 grant |
|---|---|
| Study type | NIH-funded research |
| Funding institution | Pennsylvania State Univ Hershey Med Ctr NIH-funded |
| Lab location | 1 site (Hershey, United States) |
| Project start | May 1, 2023 |
| Project end | February 28, 2027 |
| Funding year | 2026 |
| Award (this year) | $562,589 |
| NIH project number | 5R01DK132711-04 |
| Project ID | NIH-11293449 on NIH RePORTER |
Who could benefit from this research
✓Could help
People with inflammatory bowel diseases (such as colitis) or those at higher risk for colorectal cancer are the most relevant patient groups for this research.
✕Less likely to help
People without gut-related conditions or those seeking immediate clinical treatment are unlikely to gain direct benefit from this basic mechanistic research.
What this research studies
Researchers will focus on a common gut bacterium called Bacteroides thetaiotaomicron to understand how dietary sugar turns off a key bacterial colonization factor and changes bacterial behavior. They will study a conserved bacterial transcription factor and the metabolites that control its activity to see how sugar-rich diets silence it. Experiments combine laboratory molecular work with in vivo models to measure how diet alters bacterial product synthesis and host immune-related signals. The team aims to link specific dietary sugars to microbiome changes relevant to colitis and colorectal cancer.
Why it matters
Potential benefit: If successful, this work could point to ways to prevent or reduce gut inflammation and colorectal cancer risk by changing diet or targeting specific bacterial pathways.
How similar studies have gone: Prior studies show diet affects the microbiome and inflammation, but linking sugar-driven changes to a specific bacterial regulator and its products is a more novel and less-tested approach.
Where this research is happening
-
Pennsylvania State Univ Hershey Med Ctr
Hershey, United States Active
Researchers
- Principal investigator: Townsend, Guy Edmund — Pennsylvania State Univ Hershey Med Ctr
- Study coordinator: Townsend, Guy Edmund
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About this research
- This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
- Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
- For full project details, budget, and progress reports, visit the official NIH RePORTER page.