The focus of Dr. Martin's research has been on nutrient sensing mechanisms in the gut and brain and how these mechanisms may be altered by dietary fermentable carbohydrates, gut microbiota and metabolic end products.
After completing his PhD in California under the mentorship of Lee Baldwin, Roy took on a job at Penn State University in the department of animal sciences. There he and his graduate students initiated research in metabolic regulation of growth and development using farm species and rodent models. They characterized enzyme patterns and metabolite flux differences in animals with extremes in genetic potential for fat deposition. The Martin lab was moved to the University of Georgia Department of Foods and Nutrition. In collaboration with USDA scientists in Athens, they expanded their research to include fetal adipose tissue development and studies of paracrine regulation of adipose cells in culture. A new research program on neuronal sensing of energy balance was inspired by postdocs and new collaborators at UGA. After more than 20 years at UGA Roy returned to his beloved home state of Louisiana and accepted a joint appointment with the LSU AgCenter and the Pennington Biomedical Research Center. Inspired by faculty there, he became interested in the role of dietaray fermentable fiber and their effects on gut health and metabolic syndrome. Later on he was inspired to return to his wife’s home state of California. He has enjoyed the opportunity to continue discovery with USDA scientists and UCD faculty.