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de Andrade Mesquita L, Wayerbacher LF, Schwartsmann G, Gerchman F. Obesity, diabetes, and cancer: epidemiology, pathophysiology, and potential interventions. ARCHIVES OF ENDOCRINOLOGY AND METABOLISM 2023; 67:e000647. [PMID: 37364149 PMCID: PMC10660996 DOI: 10.20945/2359-3997000000647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 02/22/2023] [Indexed: 06/28/2023]
Abstract
The proportion of deaths attributable to cancer is rising, and malignant neoplasms have become the leading cause of death in high-income countries. Obesity and diabetes are now recognized as risk factors for several types of malignancies, especially endometrial, colorectal, and postmenopausal breast cancers. Mechanisms implicated include disturbances in lipid-derived hormone secretion, sex steroids biosynthesis, hyperinsulinemia, and chronic inflammation. Intentional weight loss is associated with a mitigation of risk for obesity-related cancers, a phenomenon observed specially with bariatric surgery. The impact of pharmacological interventions for obesity and diabetes is not uniform: while metformin seems to protect against cancer, other agents such as lorcaserin may increase the risk of malignancies. However, these interpretations must be carefully considered, since most data stem from bias-prone observational studies, and high-quality randomized controlled trials with appropriate sample size and duration are needed to achieve definite conclusions. In this review, we outline epidemiological and pathophysiological aspects of the relationship between obesity, diabetes, and malignancies. We also highlight pieces of evidence regarding treatment effects on cancer incidence in these populations.
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Affiliation(s)
- Leonardo de Andrade Mesquita
- Programa de Pós-graduação em Ciências Médicas: Endocrinologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
- Hospital de Clínicas de Porto Alegre, Porto Alegre, Brasil, Porto Alegre, RS, Brasil
| | - Laura Fink Wayerbacher
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - Gilberto Schwartsmann
- Hospital de Clínicas de Porto Alegre, Porto Alegre, Brasil, Porto Alegre, RS, Brasil
- Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
| | - Fernando Gerchman
- Programa de Pós-graduação em Ciências Médicas: Endocrinologia, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brasil
- Hospital de Clínicas de Porto Alegre, Porto Alegre, Brasil, Porto Alegre, RS, Brasil,
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Pati S, Irfan W, Jameel A, Ahmed S, Shahid RK. Obesity and Cancer: A Current Overview of Epidemiology, Pathogenesis, Outcomes, and Management. Cancers (Basel) 2023; 15:485. [PMID: 36672434 PMCID: PMC9857053 DOI: 10.3390/cancers15020485] [Citation(s) in RCA: 138] [Impact Index Per Article: 138.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/11/2023] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Obesity or excess body fat is a major global health challenge that has not only been associated with diabetes mellitus and cardiovascular disease but is also a major risk factor for the development of and mortality related to a subgroup of cancer. This review focuses on epidemiology, the relationship between obesity and the risk associated with the development and recurrence of cancer and the management of obesity. METHODS A literature search using PubMed and Google Scholar was performed and the keywords 'obesity' and cancer' were used. The search was limited to research papers published in English prior to September 2022 and focused on studies that investigated epidemiology, the pathogenesis of cancer, cancer incidence and the risk of recurrence, and the management of obesity. RESULTS About 4-8% of all cancers are attributed to obesity. Obesity is a risk factor for several major cancers, including post-menopausal breast, colorectal, endometrial, kidney, esophageal, pancreatic, liver, and gallbladder cancer. Excess body fat results in an approximately 17% increased risk of cancer-specific mortality. The relationship between obesity and the risk associated with the development of cancer and its recurrence is not fully understood and involves altered fatty acid metabolism, extracellular matrix remodeling, the secretion of adipokines and anabolic and sex hormones, immune dysregulation, and chronic inflammation. Obesity may also increase treatment-related adverse effects and influence treatment decisions regarding specific types of cancer therapy. Structured exercise in combination with dietary support and behavior therapy are effective interventions. Treatment with glucagon-like peptide-1 analogues and bariatric surgery result in more rapid weight loss and can be considered in selected cancer survivors. CONCLUSIONS Obesity increases cancer risk and mortality. Weight-reducing strategies in obesity-associated cancers are important interventions as a key component of cancer care. Future studies are warranted to further elucidate the complex relationship between obesity and cancer with the identification of targets for effective interventions.
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Affiliation(s)
- Sukanya Pati
- College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | | | - Ahmad Jameel
- College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
| | - Shahid Ahmed
- College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
- Saskatoon Cancer Center, Saskatchewan Cancer Agency, Saskatoon, SK S7N 4H4, Canada
| | - Rabia K. Shahid
- College of Medicine, University of Saskatchewan, Saskatoon, SK S7N 5E5, Canada
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Cheng Y, Wang Z, Jia X, Zhou R, Wang J. Association Between Abdominal Adipose Tissue Distribution and Risk of Endometrial Cancer: A Case-Control Study. Clin Med Insights Oncol 2022; 16:11795549221140776. [PMCID: PMC9742701 DOI: 10.1177/11795549221140776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/07/2022] [Indexed: 12/14/2022] Open
Abstract
Background: Obesity contributes to endometrial cancer (EC). However, it is not clear whether the distribution of adipose tissue affects the occurrence of endometrial carcinoma. This study aimed to evaluate the relationship between abdominal adipose tissue distribution and EC. Methods: We designed a case-control study with 115 women with EC and a control group. The total abdominal adipose tissue, visceral adipose tissue, and subcutaneous adipose tissue were measured by single slice computerized tomography at the level of umbilicus. Univariate and multivariate logistic regression models were used to calculate odds ratios (ORs) for the risk of EC associated with adipose tissue distribution. Furthermore, we analyzed the correlation between adipose tissue distribution and clinicopathologic features of endometrial carcinoma. Results: Multivariate analysis showed that a larger visceral adipose tissue ratio was associated with an increased risk of EC after adjusting for body mass index (BMI) and diabetes (OR = 1.046, 95% confidence interval = [1.008-1.079]). The ratio of International Federation of Obstetrics and Gynecology (FIGO) stage I and type I EC was higher in EC patients with larger visceral adipose tissue (84.5% vs 63.2%, P = .009; 91.4% vs 75.4%, P = .021). There was a higher positive ratio of progesterone receptor in EC patients with a larger subcutaneous adipose tissue area (91.2% vs 77.6%; P = .044). Conclusions: Higher visceral adipose tissue ratio, independent of BMI, was associated with an increased risk of EC. Therefore, this study demonstrated that women with normal BMI, but abnormal abdominal adipose tissue distribution, have an increased risk for EC.
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Affiliation(s)
- Yuan Cheng
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing, China
| | - Zhongyu Wang
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing, China
| | - Xiaoxuan Jia
- Department of Radiology, Peking University People’s Hospital, Beijing, China
| | - Rong Zhou
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing, China
| | - Jianliu Wang
- Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing, China,Jianliu Wang, Department of Gynecology and Obstetrics, Peking University People’s Hospital, Beijing 100044, China.
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Lu X, Jin Y, Li D, Zhang J, Han J, Li Y. Multidisciplinary Progress in Obesity Research. Genes (Basel) 2022; 13:1772. [PMID: 36292657 PMCID: PMC9601416 DOI: 10.3390/genes13101772] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Revised: 09/20/2022] [Accepted: 09/27/2022] [Indexed: 11/04/2022] Open
Abstract
Obesity is a chronic disease that endangers human health. In recent years, the phenomenon of obesity has become more and more common, and it has become a global epidemic. Obesity is closely associated with many adverse metabolic changes and diseases, such as insulin resistance, type 2 diabetes mellitus, coronary heart disease, nervous system diseases and some malignant tumors, which have caused a huge burden on the country's medical finance. In most countries of the world, the incidence of cancer caused by obesity is increasing year on year. Diabetes associated with obesity can lead to secondary neuropathy. How to treat obesity and its secondary diseases has become an urgent problem for patients, doctors and society. This article will summarize the multidisciplinary research on obesity and its complications.
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Affiliation(s)
- Xiaoqing Lu
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing 100191, China
- Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Beijing 100191, China
| | - Yuxin Jin
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing 100191, China
- Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Beijing 100191, China
| | - Dexin Li
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing 100191, China
- Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Beijing 100191, China
| | - Jingxin Zhang
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing 100191, China
- Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Beijing 100191, China
| | - Jingyan Han
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing 100191, China
- Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Beijing 100191, China
| | - Yin Li
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, Beijing 100191, China
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing 100191, China
- Key Laboratory of Stasis and Phlegm, State Administration of Traditional Chinese Medicine of the People’s Republic of China, Beijing 100191, China
- Beijing Laboratory of Integrative Microangiopathy, Beijing 100191, China
- State Key Laboratory of Core Technology in Innovative Chinese Medicine, Beijing 100191, China
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Visceral Obesity in Non-Small Cell Lung Cancer. Cancers (Basel) 2022; 14:cancers14143450. [PMID: 35884508 PMCID: PMC9315749 DOI: 10.3390/cancers14143450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Revised: 07/11/2022] [Accepted: 07/13/2022] [Indexed: 02/04/2023] Open
Abstract
While obesity measured by body mass index (BMI) has been paradoxically associated with reduced risk and better outcome for lung cancer, recent studies suggest that the harm of obesity becomes apparent when measured as visceral adiposity. However, the prevalence of visceral obesity and its associations with demographic and tumor features are not established. We therefore conducted an observational study of visceral obesity in 994 non-small cell lung cancer (NSCLC) patients treated during 2008-2020 at our institution. Routine computerized tomography (CT) images of the patients, obtained within a year of tumor resection or biopsy, were used to measure cross-sectional abdominal fat areas. Important aspects of the measurement approach such as inter-observer variability and time stability were examined. Visceral obesity was semi-quantified as visceral fat index (VFI), the fraction of fat area that was visceral. VFI was found to be higher in males compared to females, and in former compared to current or never smokers. There was no association of VFI with tumor histology or stage. A gene expression-based measure of tumor immunogenicity was negatively associated with VFI but had no bearing with BMI. Visceral obesity is appraisable in routine CT and can be an important correlate in lung cancer studies.
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Karia PS, Joshu CE, Visvanathan K. Association of Oophorectomy and Fat and Lean Body Mass: Evidence from a Population-Based Sample of U.S. Women. Cancer Epidemiol Biomarkers Prev 2021; 30:1424-1432. [PMID: 33879451 DOI: 10.1158/1055-9965.epi-20-1849] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 03/09/2021] [Accepted: 04/13/2021] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Bilateral oophorectomy during a nonmalignant hysterectomy is frequently performed for ovarian cancer prevention in premenopausal women. Oophorectomy before menopause leads to an abrupt decline in ovarian hormones that could adversely affect body composition. We examined the relationship between oophorectomy and whole-body composition. METHODS Our study population included cancer-free women 35 to 70 years old from the 1999-2006 National Health and Nutrition Examination Survey, a representative sample of the U.S. POPULATION A total of 4,209 women with dual-energy x-ray absorptiometry scans were identified, including 445 with hysterectomy, 552 with hysterectomy and oophorectomy, and 3,212 with no surgery. Linear regression was used to estimate the difference in total and regional (trunk, arms, and legs) fat and lean body mass by surgery status. RESULTS In multivariable models, hysterectomy with and without oophorectomy was associated with higher total fat mass [mean percent difference (β); βoophorectomy: 1.61%; 95% confidence interval (CI), 1.00-2.28; βhysterectomy: 0.88%; 95% CI, 0.12-1.58] and lower total lean mass [βoophorectomy: -1.48%; 95% CI, -2.67, -1.15; βhysterectomy: -0.87%; 95% CI, -1.50, -0.24) compared with no surgery. Results were stronger in women with a normal body mass index (BMI) and those <45 years at surgery. All body regions were significantly affected for women with oophorectomy, whereas only the trunk was affected for women with hysterectomy alone. CONCLUSIONS Hysterectomy with oophorectomy, particularly in young women, may be associated with systemic changes in fat and lean body mass irrespective of BMI. IMPACT Our results support prospective evaluation of body composition in women undergoing hysterectomy with oophorectomy at a young age.
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Affiliation(s)
- Pritesh S Karia
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland
| | - Corinne E Joshu
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland.,Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland.,The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
| | - Kala Visvanathan
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland. .,Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland.,The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, Maryland
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Wilcock S, Haboubi N. Obesity and the Risk of Malignancy: An Evolving Saga. J R Coll Physicians Edinb 2021; 50:392-397. [PMID: 33469614 DOI: 10.4997/jrcpe.2020.408] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Worldwide, the prevalence of both obesity and cancer are rising. So far, there is an association between obesity and an increased risk of at least 20 different cancers and this number is increasing. The mechanism behind obesity increasing the risk of cancer varies. The importance of looking at all aspects of obesity, such as hip to waist ratio, body fat distribution and waist circumference, in addition to BMI has been acknowledged in order to further understand these mechanisms. The duration of time a person is obese for, and whether their weight gain was in childhood or adulthood can also affect risk of cancer, however this can be hard to distinguish as obese children and adolescents frequently remain obese into adulthood.
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Affiliation(s)
| | - Nadim Haboubi
- Department of Clinical Nutrition and Obesity, University of South Wales, Pontypridd, UK,
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Oh H, Kwak SY, Jo G, Lee J, Park D, Lee DH, Keum N, Lee JT, Giovannucci EL, Shin MJ. Adiposity and mortality in Korean adults: a population-based prospective cohort study. Am J Clin Nutr 2021; 113:142-153. [PMID: 33037431 DOI: 10.1093/ajcn/nqaa258] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 08/20/2020] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND The Asia-Pacific obesity classification recommends using lower BMI cutoffs in Asians compared with those in Western populations. However, the supporting evidence is scarce and little is known about the exact shape of the relations between adiposity and mortality in Asians. OBJECTIVES We investigated the relations of BMI (in kg/m2), waist circumference, and predicted body fat mass with mortality using a population-based prospective cohort of Korean men and women. METHODS This analysis included 44,060 Korea National Health and Nutrition Examination Survey 2007-2014 participants who agreed to mortality follow-up through 31 December, 2016. At baseline, height, weight, and waist circumference were measured. Using DXA data, we derived predicted body fat and fat-free mass. Cox proportional hazards models were used to estimate HRs and 95% CIs for the associations with mortality, adjusting for potential confounders. We tested for nonlinearity using the likelihood ratio test comparing nonlinear restricted cubic spline models with linear models. RESULTS During ≤9.5 y of follow-up, 1682 deaths were identified. The relations of BMI with all-cause and cardiovascular mortality were J-shaped with the nadir at BMI = 25.0-29.9 (P-nonlinearity < 0.001). Among participants without a history of cancer or cardiovascular disease, waist circumference (≥95 compared with 75.0-79.9 cm: HR: 2.10; 95% CI: 1.54, 2.86) and predicted body fat mass (highest compared with lowest sextiles: 2.55; 95% CI: 1.60, 4.06) were positively associated with all-cause mortality (all P-nonlinearity ≤ 0.03), as well as cancer and cardiovascular mortality. The highest mortality was observed among participants who had both high predicted fat mass and low fat-free mass. CONCLUSIONS Our data suggest a strong positive association between adiposity and mortality in a population without pre-existing disease. We observed the lowest mortality at BMI = 25.0-29.9, suggesting that the current cutoff for overweight (BMI ≥23) may require re-evaluation and that BMI alone may not be a useful measure for indicating adiposity in Asians.
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Affiliation(s)
- Hannah Oh
- Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul, Republic of Korea.,Division of Health Policy and Management, College of Health Sciences, Korea University, Seoul, Republic of Korea
| | - So-Young Kwak
- Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul, Republic of Korea
| | - Garam Jo
- Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul, Republic of Korea
| | - Juhee Lee
- Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul, Republic of Korea
| | - Dahyun Park
- Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul, Republic of Korea
| | - Dong Hoon Lee
- Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - NaNa Keum
- Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Food Science and Biotechnology, Dongguk University, Goyang, Republic of Korea
| | - Jong-Tae Lee
- Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul, Republic of Korea.,Division of Health Policy and Management, College of Health Sciences, Korea University, Seoul, Republic of Korea
| | - Edward L Giovannucci
- Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Min-Jeong Shin
- Interdisciplinary Program in Precision Public Health, Department of Public Health Sciences, Graduate School of Korea University, Seoul, Republic of Korea.,Division of Biosystems and Biomedical Sciences, College of Health Sciences, Korea University, Seoul, Republic of Korea
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Silveira EA, Kliemann N, Noll M, Sarrafzadegan N, de Oliveira C. Visceral obesity and incident cancer and cardiovascular disease: An integrative review of the epidemiological evidence. Obes Rev 2021; 22:e13088. [PMID: 32692447 PMCID: PMC7757158 DOI: 10.1111/obr.13088] [Citation(s) in RCA: 76] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 06/08/2020] [Accepted: 06/08/2020] [Indexed: 02/07/2023]
Abstract
Evidence shows a strong relationship between obesity, cancer and cardiovascular disease (CVD) risk. However, there is not enough evidence of the role of visceral obesity on both CVD and cancer. Visceral obesity may be more pro-oncogenic than total body fat. Therefore, it is important to know whether abdominal obesity can lead to both CVD and cancer. The present integrative review aimed at evaluating epidemiological evidence on the potential connection of visceral obesity in the occurrence of cancer and CVD. The following databases were searched: SCOPUS, PubMed, Science Direct, Lilacs, SciELO, Google Scholar, Web of Science, Scopus and ProQuest. The presence of visceral obesity can increase the risk of some specific cancer types, but there is controversial evidence about CVD risk based on sex-specific and ageing analyses. There is enough evidence that visceral obesity increases the risk of colorectal, pancreatic and gastro-oesophageal cancer. However, for some types of cancer such as breast, endometrial and renal, visceral obesity is a risk only in post-menopausal women. Regarding prostate cancer, the evidence is controversial. Despite the risk of visceral obesity being consistently associated with CVD in adults, this association disappears in sex-specific and older adults analyses. Moreover, in older adults, the results are controversial due to the use of different measures such as waist circumference and visceral adipose tissue. However, the evidence showing visceral obesity as a risk factor to CVD remains controversial. Sex differences, ageing and body mass index (BMI) category can potentially modify this association. Therefore, further epidemiological studies with analyses stratified by sex and samples including older adults aged 65 and older are needed.
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Affiliation(s)
- Erika Aparecida Silveira
- Affiliate Academic at the Department of Epidemiology & Public Health, Institute of Epidemiology & Health CareUniversity College LondonLondonUK
- Postgraduate Program in Health Sciences, Faculty of MedicineFederal University of GoiásGoiâniaBrazil
| | - Nathalie Kliemann
- Nutritional Epidemiology Group, Nutrition and Metabolism Section, International Agency for Research on CancerWorld Health OrganizationLyonFrance
| | - Matias Noll
- Instituto Federal GoianoPublic Health DeptCeresBrasil
| | - Nizal Sarrafzadegan
- Isfahan Cardiovascular Research Center, Cardiovascular Research InstituteIsfahan University of Medical SciencesIsfahanIran
- School of Population and Public Health, Faculty of MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Cesar de Oliveira
- Department of Epidemiology & Public Health, Institute of Epidemiology & Health CareUniversity College LondonLondonUK
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Abstract
Breast cancer (BC) is the most frequently diagnosed type of cancer and the leading cause
of cancer deaths in women worldwide. A number of established risk factors for BC have been identified
in many previous studies which included age, reproductive history, lactation, hormone levels or
use, genetic factors, breast density and various diet and lifestyle factors. Several previous studies
highlighted the independent effect of dietary patterns, lifestyle factors, macro- and micronutrients intake,
physical activity, tobacco smoking, and weight gain on the risk BC. Although a number of risk
factors have been identified for BC, however, some are difficult to modify such as genetic factors,
while dietary pattern, physical activity, nutrient intake and smoking are modifiable risk factors which
could be targeted to reduce the risk of this devastating disease. Even though there is a quick advancement
in BC cancer therapy, but still, the survival rate is not increasing. Therefore, preventing
cancer development is more important than treating or inhibiting its progression and such prevention
can reduce the suffering and pain of patients and their families.
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Affiliation(s)
- Reema I. Mahmoud
- Department of Nutrition and Food Technology, Faculty of Agriculture, The University of Jordan, Amman 11942, Jordan
| | - Reema F. Tayyem
- Department of Nutrition and Food Technology, Faculty of Agriculture, The University of Jordan, Amman 11942, Jordan
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