NIH-funded research NIH-funded research

Understanding how the gut microbiome influences energy use and metabolic health

Official title: Deciphering and predicting ecologically sensitive gut microbiome contributions to human metabolic health

Funded at Harvard University · NIH-11406341 · Data updated 2026-11-12

A study from Harvard will explore how our gut microbes affect how we get and use energy from food and how lifestyle factors like diet and exercise change this in ways that could impact metabolic health.

More Gut Microbiome research and trials

Quick facts

Grant typeNIH-funded research
Study typeNIH-funded research
Funding institutionHarvard University
NIH-funded
Lab location1 site (Cambridge, United States)
Project startSeptember 1, 2025
Project endJune 30, 2030
Funding year2026
Award (this year)$421,250
NIH project number5R35GM160067-02
Project IDNIH-11406341 on NIH RePORTER

Who could benefit from this research

Could help

Adults interested in how their gut microbiome affects energy and metabolism and who are willing to participate in lifestyle and microbiome studies.

Less likely to help

Individuals not interested in or unable to participate in microbiome or lifestyle-related research may see no direct benefit.

What this research studies

This project looks at how ecological changes in the gut microbiome, driven by diet and activity, influence energy intake and expenditure in people. Researchers will use experiment-based methods to identify when and why the microbiome shifts health-relevant energy balance, aiming to map factors that lead to healthier metabolic outcomes. The work seeks to translate complex gut microbial dynamics into insights that could guide personalized lifestyle recommendations and therapies for metabolic health. By studying variations between people and within individuals over time, the study aims to identify equitable, microbiome-targeted approaches that support healthier energy use.

Why it matters

Potential benefit: If successful, findings could inform personalized dietary and lifestyle strategies to improve metabolic health through the gut microbiome.

How similar studies have gone: Previous research shows microbiome composition can relate to energy metabolism, but the field needs causal and causal-informative results to guide therapies.

Where this research is happening

  • Harvard University
    Cambridge, United States
    Active

Researchers

  • Principal investigator: Carmody, Rachel Naomi — Harvard University
  • Study coordinator: Carmody, Rachel Naomi

Related research

Other NIH-funded projects on the same topics.

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  • High-fructose diets, gut bacteria, and blood sugar

    This project compares short periods of high-fructose versus high-glucose diets in adults to see how the gut microbiome and blood sugar-related measures change.

    NIH research Icahn School of Medicine at Mount Sinai · New York, United States · NIH-11243472

  • How a high fructose diet affects gut health and metabolism

    This study is looking at how eating a lot of fructose affects your gut health and metabolism, and it's for people interested in understanding the connection between their diet and conditions like insulin resistance and type 2 diabetes.

    NIH research Icahn School of Medicine at Mount Sinai · New York, United States · NIH-11030720

  • Multi-agent AI to annotate enzymes in the human gut microbiome

    A team at a major university will build an AI system that automatically curates and labels the functions of enzymes in the human gut microbiome to speed up understanding their health effects.

    NIH research University of South Florida · Tampa, United States · NIH-11594384

  • Mapping how gut bacteria transform drugs

    Scientists will study how the gut microbiome changes thousands of drugs into new forms, which could affect how well a medicine works or whether it causes side effects.

    NIH research Stanford University · Stanford, United States · NIH-11550022

  • Metabolic Health and Lifestyle in Down Syndrome and Risk of Related Health Conditions

    A nationwide study aims to understand how metabolic health and daily habits affect health conditions like Alzheimer’s-related changes in people with Down syndrome.

    NIH research University of Wisconsin-Madison · Madison, United States · NIH-11541246

About this research

  1. This is an active NIH-funded research project — typically early-stage science, not a clinical trial accepting patient enrollment.
  2. Some NIH-funded labs run parallel clinical studies or seek volunteers for related work. To check, contact the principal investigator or institution listed above.
  3. For full project details, budget, and progress reports, visit the official NIH RePORTER page.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.