The Association between Obesity and Cancer Risk: A Meta-Analysis of Observational Studies from 1985 to 2011

Table 1

Summary of results of meta-analysis of associations between obesity and cancer risk in 57 studies from 18 countries, 1985–2011.

Cancer	Males	Females
	RR and 95% CI	RR and 95% CI
Colon	1.57 (1.48, 1.65)*	1.19 (1.04, 1.36)*
Endometrial	NA	1.85 (1.30, 2.65)*
Esophageal	1.23 (0.58, 2.60)	2.04 (1.18, 3.55)*
Gallbladder	1.47 (1.17, 1.85)*	1.82 (1.32, 2.50)*
Leukemia	1.16 (0.88, 1.52)	1.32 (1.08, 1.60)*
Malignant melanoma	1.26 (1.07, 1.48)*	0.95 (0.84, 1.07)
Multiple myeloma	0.58 (0.36, 0.93)*	1.20 (0.99, 1.45)
Non-Hodgkins lymphoma	1.09 (0.98, 1.21)	0.91 (0.86, 0.97)*
Pancreatic	1.36 (1.07, 1.73)*	1.34 (1.22, 1.46)*
Postmenopausal breast	NA	1.25 (1.07, 1.46)*
Rectal	1.22 (0.91, 1.64)	1.03 (0.74, 1.44)
Renal	1.57 (1.38, 1.77)*	1.72 (1.58, 1.88)*
Thyroid	1.12 (0.72, 1,72)	1.03 (0.87, 1.23)

*Statistically significant at 𝑃<0.05