SUMMARY
Aaron L. Hecht, M.D., Ph.D., studies how diet reshapes metabolism of the gut microbiome. Dr. Hecht also seeks to understand how these changes can convert normally tolerated bacteria into drivers of inflammation, barrier failure and disseminated infection, especially in medically vulnerable patients.
The long-term goal of Dr. Hecht's research is to define actionable mechanisms and biomarkers that predict infection risk. He also seeks to develop diet- and microbiome-informed strategies that prevent serious complications in conditions such as cirrhosis and alcohol-associated liver disease, and complications after antibiotic exposure.
Dr. Hecht is the director of the Diet and Microbial Metabolism Laboratory.
Focus areas
- Defining how specific dietary carbohydrates and other nutrients shape opportunistic pathogen colonization and susceptibility to systemic infection.
- Mapping the small intestine as an underexplored site of host-microbe interaction, using spatial approaches to understand how barrier vulnerability emerges.
- Determining how alcohol exposure and liver injury remodel microbial function and host defenses to create windows for barrier failure and infection.
- Understanding how existing therapies and diets drive microbial evolution in the gut, selecting new metabolic functions that alter community ecology and disease risk.
- Developing rational, mechanism-based interventions, including dietary strategies, microbiota-targeted approaches and predictive biomarkers, to restore colonization resistance and reduce infection-related morbidity.
Significance to patient care
Infections caused by bacteria that live in the gut can lead to hospital stays and death in patients with liver disease and other vulnerable conditions. Healthcare professionals have limited tools to know which patients are most at risk or how to stop these infections from happening.
Dr. Hecht studies how food, gut bacteria and the body's defenses work together. This includes:
- Predicting who might get sick.
- Finding ways to stop harmful bacteria from growing too much in the body.
- Helping the body fight off bad bacteria, especially during times of high risk.
In the future, Dr. Hecht's research could help develop new tests and treatments for healthcare professionals to prevent infections.
Professional highlights
- American Gastroenterological Association:
- Member, Institute Center for Gut Microbiome Research and Education Scientific Advisory Board, 2024-present.
- Institute Councilor, Microbiome & Microbial Therapy Section, 2023-present.
- Research Scholar Award, 2024-2027.
- Alpha Omega Alpha Honor Medical Society, 2022-present.
- Emerging-Generation Award, American Society for Clinical Investigation, 2024-2026.
- Research Fellowship Award, Crohn's & Colitis Foundation, 2023-2024.