Schaefer, M.D., Marion A. Kainer, M.B., B.S., M.P.H., Matthew Wise, Ph.D., Jennie Finks, D.V.M., M.V.P.H., Joan Duwve, M.D., M.P.H., Elizabeth Fontaine, M.S.P.H., Alvina Chu, M.H.S., Barbara Carothers, L.P.N., Amy Reilly, R.N., Jay Fiedler, M.S., Andrew D. Wiese, M.P.H., Christine Feaster, M.S.M., Lex Gibson, B.S., Stephanie Griese, M.D., Anne Purfield, Ph.D., Angela A. Cleveland, M.P.H., Kaitlin Benedict, M.P.H., Julie R. Harris, Ph.D., M.P.H., Mary E. Brandt, Ph.D., Dianna Blau, D.V.M., Ph.D., John Jernigan, M.D., J.Leukemia and lymphoma – – two types of blood cancers – – are among the most common childhood cancers. But unlike adult cancers, which arise after decades of lifestyle options and environmental exposures, most childhood cancers just happen, said Dr. Ziad Khatib, a pediatric oncologist at Nicklaus Children’s Hospital in Miami. We think most cancers in children are due to chance, said Khatib, who was not mixed up in scholarly study. But as the brand new review displays, he said, a number of studies have found an association between pesticides and specific childhood cancers. Plus, it’s biologically plausible that the chemical substances could contribute to cancer in certain vulnerable children, Khatib added. We should continually be cautious about exposing small children to any toxic chemical substances, he said.