Chapter 60

Diabetes and Cancer

Risk, Outcomes, and Clinical Implications

Ellena Badrick

Ellena Badrick

Division of Cancer Sciences, University of Manchester, Manchester, UK

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Emily J. Gallagher

Emily J. Gallagher

Division of Endocrinology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA

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Andrew G. Renehan

Andrew G. Renehan

Division of Cancer Sciences, University of Manchester, Manchester, UK

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First published: 12 January 2024

Summary

Diabetes and cancer are common chronic conditions, and they frequently coexist. This chapter describes the epidemiological evidence evaluating associations between diabetes, cancer incidence, and mortality, and the emerging trends of cancer as a leading cause of death among people with diabetes. As a prelude, the challenge of epidemiological data interpretation is set out. The chapter then discusses the two prevailing mechanistic hypotheses linking diabetes and cancer, namely hyperglycaemia versus hyperinsulinaemia. The central tenet of anti-diabetes therapy is glucose management. From the pharmaco-epidemiological literature, there is evidence that anti-diabetes medications might influence cancer risk, but again, discussion is required around interpretation of these data. Finally, the chapter covers three major areas of clinical implication and the emergence of the subspecialty of onco-diabetology.

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