A program studying heart disease and obesity in truck drivers has been expanded to review the occupational impact on bus drivers. (Photo courtesy TriMet)

Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, gave the first community-facing installment of a new lecture series in health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)

Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, gave the first community-facing installment of a new lecture series in health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)

Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, gave the first community-facing installment of a new lecture series in health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)

Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, gave the first community-facing installment of a new lecture series in health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)

Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, gave the first community-facing installment of a new lecture series in health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)

Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, gave the first community-facing installment of a new lecture series in health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)

Over 750 people came to hear Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, speak about health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)

Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, gave the first community-facing installment of a new lecture series in health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)

Harvard sociologist David R. Williams, Ph.D., M.P.H., an internationally renowned scholar in the social determinants of health, gave the first community-facing installment of a new lecture series in health equity, Feb. 28, 2018 at Maranatha Church in Portland. (OHSU/Kristyna Wentz-Graff)