Ryan Lewis PhD

Dr. Ryan C. Lewis is a Principal Health Scientist and Director with Benchmark Risk Group. He has more than 15 years of scientific consulting and research experience in the areas of exposure science, industrial hygiene, and environmental epidemiology. He was educated at the University of Michigan (BS and PhD) and Harvard University (MS). His work involves evaluations of exposures and health effects at the individual and population levels, in occupational and non-occupational settings, and from consumer and industrial product use scenarios. He is experienced with a wide range of agents such as asbestos, bisphenol A, ethanol, ethylene oxide, glass fibers, heavy metals, non-asbestiform minerals, pesticides, phthalates, power-frequency magnetic fields, silica, talc, and wood dust.

Dr. Lewis has published 31 peer-reviewed scientific papers, which have been cited more than 1,000 times. His papers have addressed three areas: 1) epidemiologic analyses and literature reviews of environmental exposures and health endpoints; 2) evaluation of exposure measurement error, exposure misclassification, and confounding in epidemiology studies; and 3) characterization, predictors, and contextualization of exposures. Dr. Lewis is on the editorial board of Frontiers in Public Health and was formerly on the editorial boards of the Journal of Toxicology and Environmental Health and Toxicology and Industrial Health. He has also served as an invited reviewer for more than 20 scientific journals.