Data were derived from the University of Pittsburgh Adult Health and Behavior (AHAB) registry, which is comprised of behavioral and biological measurements obtained on non-Hispanic white and African American individuals recruited between 2001 and 2005 via mass-mail solicitation from communities of southwestern Pennsylvania, USA (principally Allegheny County) (Cf., 14 – 16). Subjects were 1046 male (49%) and female AHAB participants, aged 30–54 years. Eighty-four percent of participants were White and 16% African American. Study exclusions were a reported history of atherosclerotic cardiovascular disease, chronic kidney or liver disease, cancer treatment in the preceding year, and major neurological disorders, schizophrenia or other psychotic illness. Other exclusions included pregnancy and the use of insulin, glucocorticoid, antiarrhythmic, psychotropic, or prescription weight-loss medications. Data collection occurred over multiple laboratory sessions, and informed consent was obtained in accordance with approved protocol and guidelines of the University of Pittsburgh Institutional Review Board.