When you talk with Dr. Sean H. Adams, Professor and Vice Chair for Basic Research in the Department of Surgery at UC Davis, he quickly moves beyond the surface of food and nutrition. Within minutes, he’s describing xenometabolites—tiny, microbe-made molecules circulating through our blood that quietly influence inflammation, energy balance, and metabolic health.
“These are central to how the gut microbes ‘talk’ to the body and to one another,” he says. “They reflect what we eat and what our microbes do with it, inform on metabolic processes, and shape our metabolism in ways we’re only beginning to understand.”
That curiosity, about the invisible biochemical dialogues between food, microbes, and human cells, has guided Dr. Adams through a career that bridges molecular science and human health. Today, as the founding Scientific Director of the Center for Alimentary and Metabolic Science (CAMS), and the founding Director of the Nutrition for Transformative Healthcare Program (NTHP), he collaborates with a diverse research community exploring how diet, metabolism, and the gut microbiome converge to shape disease risk and physiology.
Dr. Adams often describes metabolism as a conversation. Food speaks through nutrients; microbes translate; and together, they determine how our bodies regulate hormones, inflammation, and energy use.
His team uses advanced metabolomics and lipidomics to listen in on that dialogue—tracking thousands of compounds that link diet, microbial activity, and metabolic health.
“When you look closely enough, food isn’t just calories—it’s information,” he explains. “Each molecule, whether from spinach or sourdough, carries instructions that ripple through our biochemistry.”
Results from a recent collaboration, published in mSystems (Piccolo et al., 2025), showcases the power of what he calls “xenometabolomics”, the study of metabolites produced when gut microbes process dietary compounds.
By examining how different types of dietary fibers (like distinct forms of inulin) influence microbial metabolism, the team discovered that each fiber drives unique metabolic “guilds” within the human gut microbiota. These specialized communities generate metabolite signatures for each fiber type.
“It’s like discovering dialects in the microbiome’s language,” Adams says. “Each fiber or food source invites a different microbial response, and those differences can shape our health in profound ways.”
Dr. Adams’s curiosity extends beyond single foods to complex dietary systems. In a Frontiers in Nutrition paper (Adams et al., 2022), he and collaborators proposed a multi-omics framework to explore the “wine–food–gut axis”—how wine molecules and dietary compounds interact with gut microbes to influence metabolic and cardiovascular outcomes.
“Wine chemistry is an incredible model of complexity,” he explains. “Since wine is often consumed with food, and together these impact gut microbe metabolism, the molecular complexity is amplified even further.”
Another 2025 contribution in Current Developments in Nutrition extends that translational theme through the Dietary Biomarkers Development Consortium, a collaborative initiative focused on validating molecular markers of food intake for precision nutrition.
In a recent IIFH feature, “Could Functional Foods Replace the Need for GLP-1s?”, Dr. Adams discussed if nutrients and microbial metabolites might activate gut-hormone pathways similar to today’s metabolic drugs.
“Gut hormones like GLP-1 are nature’s own metabolic regulators,” he noted. “The challenge is figuring out how to activate those same pathways through food.”
This work bridges fundamental metabolism with translational food innovation, offering insight into how food composition and microbial metabolism could be leveraged to improve appetite control, glucose regulation, and energy balance without pharmacologic intervention.
Dr. Adams’s “molecule-to-bedside” vision reflects his wide-ranging scientific path, from early studies in marine mammal metabolism, PhD research in nutritional biochemistry, to postdoctoral work in Barcelona and at UT Southwestern Medical Center and pharmaceutical R&D at Genentech and elsewhere. Before joining UC Davis, he led programs at the USDA-ARS Western Human Nutrition Research Center and served as Director of the Arkansas Children’s Nutrition Center, exploring how diet and exercise impact cardiometabolic health.
Now, through CAMS and the NTHP, he and his colleagues unite omics technologies with patient-oriented research to better understand how lifestyle and diet modulate metabolism in real-world settings.
For Dr. Adams, food is more than sustenance, it’s strategy.
“If we can decode the chemical cross-talk between food, microbes, and the body,” he reflects, “we can design diets and products that support well-being before illness ever takes hold.”
Through his integrative approach to metabolism, microbiome science, and translational nutrition, Dr. Sean H. Adams embodies the IIFH mission: connecting discovery with impact to create a healthier, more sustainable future for people and the planet.
