Thomas Roland Insel is an American neuroscientist and psychiatrist who led the National Institute of Mental Health (NIMH) from 2002 until November 2015. Prior to becoming Director of NIMH, he was the founding Director of the Center for Behavioral Neuroscience at Emory University in Atlanta, Georgia. He is best known for research on oxytocin and vasopressin, two peptide hormones implicated in complex social behaviors, such as parental care and attachment. He announced on Sept. 15, 2015, that he was resigning as the director of the NIMH to join the Life Science division of Google X (now Verily Life Sciences). On May 8, 2017, CNBC reported that he had left Verily Life Sciences. Insel is a Co-founder with Richard Klausner of a neuroscience company named "Mindstrong," a Bay-area startup.