Impact of obesity on therapy response and clinical outcomes in cancer patients

CHONG Xiao-yi; ZHANG Xiao-tian

doi:10.16689/j.cnki.cn11－9349/r.2019.02.004

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Electronic Journal of Metabolism and Nutrition of Cancer ›› 2019, Vol. 6 ›› Issue (2) : 172-177. DOI: 10.16689/j.cnki.cn11－9349/r.2019.02.004

Impact of obesity on therapy response and clinical outcomes in cancer patients

CHONG Xiao-yi， ZHANG Xiao-tian

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Abstract

The world health organization defines obesity as a body mass index (BMI) of no less than 30. Because of the small size of the oriental human body， obesity is defined as BMI ≥ 28 in China. There is a large amount of obesity patient in our country， which is nearly 90 million in 2014. Many researches showed that obesity is associated closely with the incidence of tumors. Currently， there are about 13 types of obesity-related tumors. Therefore， ensuring that BMI is within the normal range is still a correct choice for avoiding the risk of cancer. At the same time， obesity also affects the therapy response and long-term survival of cancer patients. Many studies have shown that obesity may have an effect during the whole process of tumor treatment. With the increasing incidence of obesity and tumor， the treatment for obese cancer patients in clinical practice has become an issue which clinicians need to consider. For a long time， obesity has been regarded as a stumbling block in cancer treatment. However， in recent years， some studies have identified the dual role of obesity in the efficacy of surgery， chemotherapy， targeting therapy， and immunotherapy， in other words， “obesity paradox”: overweight and mildly obese cancer patients have the better survival benefit and response to therapy， while moderate to severe obesity and underweight are related to poor prognosis. Researchers now recognize that obesity may affect the cancer treatment in another way. Therefore， the weight management， treatment strategy， and long-term survival prediction of obese tumor patients need to be explored and established through further pre-clinical research and clinical practice， and a more detailed and in-depth understanding of the relationship between obesity and tumor will be warrant for prevention and treatment of cancer. This article reviews the effects and advanced progress of obesity on cancer treatment.

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Obesity / Cancer / BMI

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CHONG Xiao-yi， ZHANG Xiao-tian. Impact of obesity on therapy response and clinical outcomes in cancer patients[J]. Electronic Journal of Metabolism and Nutrition of Cancer. 2019, 6(2): 172-177 https://doi.org/10.16689/j.cnki.cn11－9349/r.2019.02.004

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