肥胖是多种恶性肿瘤发生的重要危险因素,例如乳腺癌、子宫内膜癌、结直肠癌、前列腺癌等。体质量(BMI)作为最常用的肥胖替代指标,可较好地反映肥胖肿瘤患者的临床特征、治疗疗效及预后,然而,各临床研究得到的结论并不一致。BMI单独用于肥胖和肿瘤关系的研究有其局限与不足,临床应根据需要适当参考,尚应寻求能够反映肥胖与肿瘤间关系的更为理想的替代指标。 Obesity is an important risk factor for a variety of malignant tumors, such as breast cancer, endometrial cancer, colorectal cancer, prostate cancer and so on. Body mass (BMI) as the most commonly used indicator of obesity, can better reflect the clinical features of patients with obesity, treatment efficacy and prognosis, however, the conclusions obtained in clinical studies are inconsistent. BMI alone for the study of the relationship between obesity and cancer has its limitations and shortcomings, clinical should be based on the need for appropriate reference, should be looking for to reflect the relationship between obesity and tumor more ideal alternative indicators.