Peter J. Turnbaugh (born c. 1981) is a microbiologist and a professor at University of California, San Francisco.

He is known[1] for his research on the metabolic activities performed by the trillions of microbes that colonize humans' adult bodies.

Turnbaugh and his research group use interdisciplinary approaches in preclinical models and human cohorts to study the mechanisms through which the gut microbiome influences nutrition[2][3][4] and pharmacology.

in Biochemistry, Biophysics, and Molecular Biology from Whitman College and a Ph.D. in Microbial Genetics and Genomics from Washington University in St.

[6] From 2010 to 2014 he was a Bauer Fellow in the FAS Center for Systems Biology at Harvard University, where he established an independent research group prior to starting his faculty position at the University of California, San Francisco.