TY - CHAP M1 - Book, Section TI - Chemical Carcinogenesis A1 - Grant, Denis M. A2 - Tannock, Ian F. A2 - Hill, Richard P. A2 - Bristow, Robert G. A2 - Harrington, Lea PY - 2016 T2 - The Basic Science of Oncology, 5e AB - Although many factors contribute to cancer causation, this chapter focuses on providing an overview of the mechanisms by which exogenous chemicals may influence the risk of cancer initiation and tumor growth, and how knowledge of these mechanisms might be exploited to improve human health through prevention or intervention. The reader is directed to the bibliography for a list of critical reviews that summarize the past history, current status, and future prospects for the field of chemical carcinogenesis. The relative importance of environmental chemical exposures to the total burden of cancer risk remains highly contentious and it has been estimated that chemical pollution of the environment accounts for no more than 1% to 3% of all human cancers. However, such estimates do not consider chemical exposures in the workplace (5%) or cigarette smoke (30%) to be environmental pollutants, and they tend to have a primary focus on genotoxic chemicals as causative agents. Thus they may underestimate the importance of the interplay between the permanent tumor-initiating effects of low-level carcinogen exposure, the additional effects of nongenotoxic chemicals, and the potentially reversible modulating effects on tumor growth of diet, exercise, and other lifestyle factors. SN - PB - McGraw-Hill Education Medical CY - New York, NY Y2 - 2024/04/19 UR - hemonc.mhmedical.com/content.aspx?aid=1127471574 ER -