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He Q, Wu S, Zhou Y, Liu Y, Xia B, Li W, Zhao J, Mi N, Xie P, Qin X, Yuan J, Pan Y. Genetic factors, adherence to healthy lifestyle behaviors, and risk of bladder cancer. BMC Cancer 2023; 23:965. [PMID: 37828430 PMCID: PMC10568887 DOI: 10.1186/s12885-023-11455-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 09/27/2023] [Indexed: 10/14/2023] Open
Abstract
BACKGROUND Genetic and lifestyle factors both contribute to the pathogenesis of bladder cancer, but the extent to which the increased genetic risk can be mitigated by adhering to a healthy lifestyle remains unclear. We aimed to investigate the association of combined lifestyle factors with bladder cancer risk within genetic risk groups. METHODS We conducted a prospective study of 375 998 unrelated participants of European ancestry with genotype and lifestyle data and free of cancer from the UK biobank. We generated a polygenic risk score (PRS) using 16 single nucleotide polymorphisms and a healthy lifestyle score based on body weight, smoking status, physical activity, and diet. Cox models were fitted to estimate the hazard ratios (HRs) and 95% confidence intervals (CIs) of genetic and lifestyle factors on bladder cancer. RESULTS During a median follow-up of 11.8 years, 880 participants developed bladder cancer. Compared with those with low PRS, participants with intermediate and high PRS had a higher risk of bladder cancer (HR 1.29, 95% CI 1.07-1.56; HR 1.63, 95% CI 1.32-2.02, respectively). An optimal lifestyle was associated with an approximately 50% lower risk of bladder cancer than a poor lifestyle across all genetic strata. Participants with a high genetic risk and a poor lifestyle had 3.6-fold elevated risk of bladder cancer compared with those with a low genetic risk and an optimal lifestyle (HR 3.63, 95% CI 2.23 -5.91). CONCLUSIONS Adhering to a healthy lifestyle could substantially reduce the bladder cancer risk across all genetic strata, even for high-genetic risk individuals. For all populations, adopting an intermediate lifestyle is more beneficial than a poor one, and adhering to an optimal lifestyle is the ideal effective strategy for bladder cancer prevention.
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Affiliation(s)
- Qiangsheng He
- Scientific Research Center, Big Data Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
- Clinical Research Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
- Guangdong Provincial Key Laboratory of Gastroenterology, Center for Digestive Disease, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Siqing Wu
- School of Medicine, Sun Yat-Sen University, Shenzhen, Guangdong, 518107, China
| | - Ying Zhou
- Primary Care Office, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Yuchen Liu
- Scientific Research Center, Big Data Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Bin Xia
- Scientific Research Center, Big Data Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
- Clinical Research Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
- Guangdong Provincial Key Laboratory of Gastroenterology, Center for Digestive Disease, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Wenjing Li
- Scientific Research Center, Big Data Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Jinyu Zhao
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Ningning Mi
- Department of General Surgery, The First Hospital of Lanzhou University, Lanzhou, 730000, Gansu, China
| | - Peng Xie
- Guangdong Provincial Key Laboratory of Gastroenterology, Center for Digestive Disease, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China
| | - Xiwen Qin
- Department of Pharmacology and Pharmacy, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
- School of Population and Global Health, Faculty of Medicine, Density and Health Sciences, University of Western Australia, Perth, AU-WA, Australia
| | - Jinqiu Yuan
- Scientific Research Center, Big Data Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China.
- Clinical Research Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China.
- Guangdong Provincial Key Laboratory of Gastroenterology, Center for Digestive Disease, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China.
| | - Yihang Pan
- Scientific Research Center, Big Data Center, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China.
- Guangdong Provincial Key Laboratory of Gastroenterology, Center for Digestive Disease, The Seventh Affiliated Hospital, Sun Yat-Sen University, Shenzhen, 518107, Guangdong, China.
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Zhang M, Dong X, Huang Z, Li X, Zhao Y, Wang Y, Zhu H, Fang A, Giovannucci EL. Cheese consumption and multiple health outcomes: an umbrella review and updated meta-analysis of prospective studies. Adv Nutr 2023; 14:1170-1186. [PMID: 37328108 PMCID: PMC10509445 DOI: 10.1016/j.advnut.2023.06.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Revised: 05/15/2023] [Accepted: 06/13/2023] [Indexed: 06/18/2023] Open
Abstract
This umbrella review aims to provide a systematic and comprehensive overview of current evidence from prospective studies on the diverse health effects of cheese consumption. We searched PubMed, Embase, and Cochrane Library to identify meta-analyses/pooled analyses of prospective studies examining the association between cheese consumption and major health outcomes from inception to August 31, 2022. We reanalyzed and updated previous meta-analyses and performed de novo meta-analyses with recently published prospective studies, where appropriate. We calculated the summary effect size, 95% prediction confidence intervals, between-study heterogeneity, small-study effects, and excess significance bias for each health outcome. We identified 54 eligible articles of meta-analyses/pooled analyses. After adding newly published original articles, we performed 35 updated meta-analyses and 4 de novo meta-analyses. Together with 8 previous meta-analyses, we finally included 47 unique health outcomes. Cheese consumption was inversely associated with all-cause mortality (highest compared with lowest category: RR = 0.95; 95% CI: 0.92, 0.99), cardiovascular mortality (RR = 0.93; 95% CI: 0.88, 0.99), incident cardiovascular disease (CVD) (RR = 0.92; 95% CI: 0.89, 0.96), coronary heart disease (CHD) (RR = 0.92; 95% CI: 0.86, 0.98), stroke (RR = 0.93; 95% CI: 0.89, 0.98), estrogen receptor-negative (ER-) breast cancer (RR = 0.89; 95% CI: 0.82, 0.97), type 2 diabetes (RR = 0.93; 95% CI: 0.88, 0.98), total fracture (RR = 0.90; 95% CI: 0.86, 0.95), and dementia (RR = 0.81; 95% CI: 0.66, 0.99). Null associations were found for other outcomes. According to the NutriGrade scoring system, moderate quality of evidence was observed for inverse associations of cheese consumption with all-cause and cardiovascular mortality, incident CVD, CHD, and stroke, and for null associations with cancer mortality, incident hypertension, and prostate cancer. Our findings suggest that cheese consumption has neutral to moderate benefits for human health.
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Affiliation(s)
- Mingjie Zhang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xiaocong Dong
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Zihui Huang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Xue Li
- Department of Big Data in Health Science School of Public Health, Center of Clinical Big Data and Analytics of The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Yue Zhao
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Yingyao Wang
- Chinese Nutrition Society Academy of Nutrition and Health, Beijing, China.
| | - Huilian Zhu
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Aiping Fang
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China; Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-sen University, Guangzhou, China; Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA.
| | - Edward L Giovannucci
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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3
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Yang F, Liu G, Wei J, Dong Y, Zhang X, Zheng Y. Relationship between Bladder Cancer, Nutritional Supply, and Treatment Strategies: A Comprehensive Review. Nutrients 2023; 15:3812. [PMID: 37686845 PMCID: PMC10490344 DOI: 10.3390/nu15173812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 08/20/2023] [Accepted: 08/25/2023] [Indexed: 09/10/2023] Open
Abstract
Bladder cancer (BC) is the predominant neoplasm affecting the urinary system and ranks among the most widespread malignancies globally. The causes of bladder cancer include genetic factors; age; sex; and lifestyle factors, such as imbalanced nutrition, obesity, and metabolic disorders. The lack of proper nutrient intake leads to the development of bladder cancer because insufficient nutrients are consumed to prevent this disease. The purpose of this review was to analyze the nutrients closely linked to the onset and advancement of bladder cancer and to explore the relationship between dietary nutrients and bladder cancer. Particular emphasis was placed on nutrients that are frequently ingested in daily life, including sugar, fat, protein, and others. The focus of this research was to analyze how nutritional intake before and after surgery affects the recovery process of patients who have been diagnosed with bladder cancer. This article seeks to increase awareness among both society and the medical community about the significance of implementing appropriate dietary nutrition to reduce the chances of developing bladder cancer, enhance perioperative care for patients with bladder cancer, and aid in their recuperation.
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Affiliation(s)
- Fan Yang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China;
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
| | - Guanmo Liu
- Department of Breast Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China;
| | - Jiaxin Wei
- Department of Emergency Department, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China;
| | - Yucheng Dong
- Tsinghua Health Science Center, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China;
| | - Xuebin Zhang
- Department of Urology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China;
| | - Yongchang Zheng
- Department of Liver Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100730, China
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Jubber I, Ong S, Bukavina L, Black PC, Compérat E, Kamat AM, Kiemeney L, Lawrentschuk N, Lerner SP, Meeks JJ, Moch H, Necchi A, Panebianco V, Sridhar SS, Znaor A, Catto JWF, Cumberbatch MG. Epidemiology of Bladder Cancer in 2023: A Systematic Review of Risk Factors. Eur Urol 2023; 84:176-190. [PMID: 37198015 DOI: 10.1016/j.eururo.2023.03.029] [Citation(s) in RCA: 57] [Impact Index Per Article: 57.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Revised: 03/01/2023] [Accepted: 03/24/2023] [Indexed: 05/19/2023]
Abstract
CONTEXT Bladder cancer (BC) is common worldwide and poses a significant public health challenge. External risk factors and the wider exposome (totality of exposure from external and internal factors) contribute significantly to the development of BC. Therefore, establishing a clear understanding of these risk factors is the key to prevention. OBJECTIVE To perform an up-to-date systematic review of BC's epidemiology and external risk factors. EVIDENCE ACQUISITION Two reviewers (I.J. and S.O.) performed a systematic review using PubMed and Embase in January 2022 and updated it in September 2022. The search was restricted to 4 yr since our previous review in 2018. EVIDENCE SYNTHESIS Our search identified 5177 articles and a total of 349 full-text manuscripts. GLOBOCAN data from 2020 revealed an incidence of 573 000 new BC cases and 213 000 deaths worldwide in 2020. The 5-yr prevalence worldwide in 2020 was 1 721 000. Tobacco smoking and occupational exposures (aromatic amines and polycyclic aromatic hydrocarbons) are the most substantial risk factors. In addition, correlative evidence exists for several risk factors, including specific dietary factors, imbalanced microbiome, gene-environment risk factor interactions, diesel exhaust emission exposure, and pelvic radiotherapy. CONCLUSIONS We present a contemporary overview of the epidemiology of BC and the current evidence for BC risk factors. Smoking and specific occupational exposures are the most established risk factors. There is emerging evidence for specific dietary factors, imbalanced microbiome, gene-external risk factor interactions, diesel exhaust emission exposure, and pelvic radiotherapy. Further high-quality evidence is required to confirm initial findings and further understand cancer prevention. PATIENT SUMMARY Bladder cancer is common, and the most substantial risk factors are smoking and workplace exposure to suspected carcinogens. On-going research to identify avoidable risk factors could reduce the number of people who get bladder cancer.
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Affiliation(s)
- Ibrahim Jubber
- Academic Urology Unit, University of Sheffield, Sheffield, UK; Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK.
| | - Sean Ong
- EJ Whitten Foundation Prostate Cancer Research Centre, Epworth HealthCare, Melbourne, Australia; Department of Surgery, University of Melbourne, Melbourne, Australia
| | | | - Peter C Black
- Department of Urologic Sciences, University of British Columbia, Vancouver, British Columbia, Canada
| | - Eva Compérat
- Department of Pathology, Medical University of Vienna, Vienna, Austria
| | - Ashish M Kamat
- Department of Urology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - Nathan Lawrentschuk
- EJ Whitten Foundation Prostate Cancer Research Centre, Epworth HealthCare, Melbourne, Australia; Department of Surgery, University of Melbourne, Melbourne, Australia; Department of Surgery, Royal Melbourne Hospital, Melbourne, Australia
| | - Seth P Lerner
- Scott Department of Urology, Dan L. Duncan Cancer Center, Baylor College of Medicine, Houston, TX, USA
| | - Joshua J Meeks
- Departments of Urology and Biochemistry, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - Holger Moch
- Department of Pathology and Molecular Pathology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Andrea Necchi
- Department of Medical Oncology, IRCCS San Raffaele Hospital, Vita-Salute San Raffaele University, Milan, Italy
| | - Valeria Panebianco
- Department of Radiological Sciences, Oncology, and Pathology, Sapienza University of Rome, Rome, Italy
| | - Srikala S Sridhar
- Division of Medical Oncology and Hematology, Princess Margaret Cancer Centre, Toronto, Ontario, Canada
| | - Ariana Znaor
- Cancer Surveillance Branch, International Agency for Research on Cancer, Lyon, France
| | - James W F Catto
- Academic Urology Unit, University of Sheffield, Sheffield, UK; Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Marcus G Cumberbatch
- Academic Urology Unit, University of Sheffield, Sheffield, UK; Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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Qi J, An P, Jin D, Ji Y, Wan S, Zhang X, Luo Y, Luo J, Zhang C. Food groups and urologic cancers risk: a systematic review and meta-analysis of prospective studies. Front Nutr 2023; 10:1154996. [PMID: 37266130 PMCID: PMC10231388 DOI: 10.3389/fnut.2023.1154996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 04/18/2023] [Indexed: 06/03/2023] Open
Abstract
Background To assess the association between 12 food groups intake and the risk of urologic cancers. Methods We scanned PubMed and Web of Science databases up to April 1st, 2023, and 73 publications met the inclusion criteria in the meta-analysis. We used a random effects model to estimate the summary risk ratios (RRs) and 95% confidence intervals (95% CI). Results In the linear dose-response meta-analysis, an inverse association was found between each additional daily 100 g of fruits [RR: 0.89, 95%CI = (0.83, 0.97)], 100 g of vegetables [RR: 0.92, 95%CI = (0.85, 0.99)], 12 g of alcohol [RR: 0.91, 95%CI = (0.88, 0.94)] and 1 cup of coffee [RR: 0.95, 95%CI = (0.83, 0.97)] intake and the risk of renal cell carcinoma. Conversely, each additional daily 100 g of red meat intake was positively associated with renal cell carcinoma [RR: 1.41, 95%CI = (1.03, 2.10)]. Inverse associations were observed between each additional daily 50 g of egg [RR: 0.73, 95%CI = (0.62, 0.87)] and each additional daily 1 cup of tea consumption and bladder cancer risk [RR: 0.97, 95%CI = (0.94, 0.99)]. There were no significant associations for nonlinear dose-response relationships between 12 food groups and urological cancers. Conclusion Our meta-analysis strengthens the evidence that appropriate intake of specific food groups, such as fruits, vegetables, alcohol, tea, and coffee, is associated with the risk of renal cell carcinoma or bladder cancer. More studies are required to fill the knowledge gap on the links between various food groups and urologic cancers because the evidence was less credible in this meta-analysis. Systematic Review Registration This study was registered on PROSPERO (CRD42022340336).
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Affiliation(s)
- Jingyi Qi
- Department of Nutrition and Health, Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Peng An
- Department of Nutrition and Health, Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Dekui Jin
- Department of General Practice, The Third Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yuting Ji
- Department of Nutrition and Health, Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Sitong Wan
- Department of Nutrition and Health, Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Xu Zhang
- Department of Nutrition and Health, Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Yongting Luo
- Department of Nutrition and Health, Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Junjie Luo
- Department of Nutrition and Health, Beijing Advanced Innovation Center for Food Nutrition and Human Health, China Agricultural University, Beijing, China
| | - Chengying Zhang
- Department of General Practice, The Third Medical Center of Chinese PLA General Hospital, Beijing, China
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Hajjar M, Pourkerman M, Rezazadeh A, Yunus F, Rashidkhani B. Adherence to Mediterranean-Style Dietary Pattern and Risk of Bladder Cancer: A Case-Control Study in Iran. Nutr Cancer 2023; 75:610-617. [PMID: 36436001 DOI: 10.1080/01635581.2022.2143536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Few dietary patterns are related to reduce the Bladder Cancer (BC) risk. One of the well-known dietary patterns is the Mediterranean diet (MD). This case-control study investigated the association between MD and the odds of BC among Iranian population. The present case-control study was performed on 103 eligible cases and 200 controls age 45 to 92 years. Diet of participants was assessed by a validated 168-item food frequency questionnaire (FFQ). Adherence to MD was measured by Mediterranean-Style Dietary Pattern Score (MSDPS). Multivariate logistic regression was used to estimate the relationship between MSDPS and risk of BC. After controlling for potential confounders, a negative association was observed between MSDPS and risk of BC (OR = 0.22; 95%CI = 0.09-0.52; p trend = 0.001). Furthermore, significant negative associations were observed for dairy, fish and other seafood, whole-grain, bread intake and risk of BC (p for trend < 0.05). In contrast, the risk of BC increased for high intake of poultry (OR = 1.09; 95%CI = 1.03-1.15; p trend = 0.003), sweets (OR = 1.24; 95%CI = 1.03-1.48; p trend = 0.018) and egg (p for trend = 0.01). Our results suggested that dietary habit in concordance with the principles of the Mediterranean dietary pattern may protect against BC.
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Affiliation(s)
- Melika Hajjar
- Department of Community Nutrition, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Marzieh Pourkerman
- Department of Community Nutrition, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Arezoo Rezazadeh
- Department of Community Nutrition, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Faisel Yunus
- Department of Community Medicine, Shalamar Medical & Dental College, University of Health Sciences, Lahore, Pakistan
| | - Bahram Rashidkhani
- Department of Community Nutrition, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Sciences and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Lumsden AL, Mulugeta A, Hyppönen E. Milk consumption and risk of twelve cancers: A large-scale observational and Mendelian randomisation study. Clin Nutr 2023; 42:1-8. [PMID: 36473423 DOI: 10.1016/j.clnu.2022.11.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Revised: 11/01/2022] [Accepted: 11/04/2022] [Indexed: 11/11/2022]
Abstract
BACKGROUND & AIMS Milk consumption is a modifiable lifestyle factor that has been associated with several cancer types in observational studies. Limited evidence exists regarding the causality of these relationships. Using a genetic variant (rs4988235) near the lactase gene (LCT) locus that proxies milk consumption, we conducted a comprehensive survey to assess potential causal relationships between milk consumption and 12 types of cancer. METHODS Our analyses were conducted using white British participants of the UK Biobank (n = up to 255,196), the FinnGen cohort (up to 260,405), and available cancer consortia. We included cancers with previous evidence of an association with milk consumption in observational studies, as well as cancers common in both UK Biobank and FinnGen populations (>1000 cases). We evaluated phenotypic associations of milk intake and cancer incidence in the UK Biobank, and then used a Mendelian randomisation (MR) approach to assess causality in the UK Biobank, FinnGen consortium, and combined analyses incorporating additional consortia data for five cancers. In MR meta-analyses, case numbers for cancers of breast, ovary, uterus, cervix, prostate, bladder and urinary tract, colorectum, and lung ranged between 6000 and 148,000 cases, and between 780 and 1342 cases for cancers of the liver, mouth, stomach and diffuse large B-cell lymphoma. RESULTS In observational analyses, milk consumption was associated with higher risk of bladder and urinary tract cancer (OR 1.23, 95% CI 1.03-1.47), but not with any other cancer. This association was not confirmed in the MR analysis, and genetically predicted milk consumption showed a significant association only with lower risk of colorectal cancer (0.89, 0.81-0.98 per additional 50 g/day). In the MR analyses conducted among individual cohorts, genetically predicted milk consumption provided evidence for an association with lower colorectal cancer in the FinnGen cohort (0.85, 0.74-0.97), and in the UK Biobank greater risk of female breast cancer (1.12, 1.03-1.23), and uterine cancer in pre-menopausal females (3.98, 1.48-10.7). CONCLUSION In a comprehensive survey of milk-cancer associations, we confirm of a protective role of milk consumption for colorectal cancer. Our analyses also provide some suggestion for higher risks of breast cancer and premenopausal uterine cancer, warranting further investigation.
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Affiliation(s)
- Amanda L Lumsden
- Australian Centre for Precision Health, Unit of Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia.
| | - Anwar Mulugeta
- Australian Centre for Precision Health, Unit of Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia; Department of Pharmacology and Clinical Pharmacy, College of Health Sciences, Addis Ababa, Ethiopia.
| | - Elina Hyppönen
- Australian Centre for Precision Health, Unit of Clinical and Health Sciences, University of South Australia, Adelaide, SA 5000, Australia; South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia.
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8
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Boot IWA, Wesselius A, Yu EYW, Brinkman M, van den Brandt P, Grant EJ, White E, Weiderpass E, Ferrari P, Schulze MB, Bueno-de-Mesquita B, Jose-Sanchez M, Gylling B, Zeegers MP. Dietary B group vitamin intake and the bladder cancer risk: a pooled analysis of prospective cohort studies. Eur J Nutr 2022; 61:2397-2416. [PMID: 35129646 PMCID: PMC9279207 DOI: 10.1007/s00394-022-02805-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 01/11/2022] [Indexed: 12/24/2022]
Abstract
PURPOSE Diet may play an essential role in the aetiology of bladder cancer (BC). The B group complex vitamins involve diverse biological functions that could be influential in cancer prevention. The aim of the present study was to investigate the association between various components of the B group vitamin complex and BC risk. METHODS Dietary data were pooled from four cohort studies. Food item intake was converted to daily intakes of B group vitamins and pooled multivariate hazard ratios (HRs), with corresponding 95% confidence intervals (CIs), were obtained using Cox-regression models. Dose-response relationships were examined using a nonparametric test for trend. RESULTS In total, 2915 BC cases and 530,012 non-cases were included in the analyses. The present study showed an increased BC risk for moderate intake of vitamin B1 (HRB1: 1.13, 95% CI: 1.00-1.20). In men, moderate intake of the vitamins B1, B2, energy-related vitamins and high intake of vitamin B1 were associated with an increased BC risk (HR (95% CI): 1.13 (1.02-1.26), 1.14 (1.02-1.26), 1.13 (1.02-1.26; 1.13 (1.02-1.26), respectively). In women, high intake of all vitamins and vitamin combinations, except for the entire complex, showed an inverse association (HR (95% CI): 0.80 (0.67-0.97), 0.83 (0.70-1.00); 0.77 (0.63-0.93), 0.73 (0.61-0.88), 0.82 (0.68-0.99), 0.79 (0.66-0.95), 0.80 (0.66-0.96), 0.74 (0.62-0.89), 0.76 (0.63-0.92), respectively). Dose-response analyses showed an increased BC risk for higher intake of vitamin B1 and B12. CONCLUSION Our findings highlight the importance of future research on the food sources of B group vitamins in the context of the overall and sex-stratified diet.
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Affiliation(s)
- Iris W A Boot
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 40 (Room C5.570), 6229 ER, Maastricht, The Netherlands
| | - Anke Wesselius
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 40 (Room C5.570), 6229 ER, Maastricht, The Netherlands.
| | - Evan Y W Yu
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 40 (Room C5.570), 6229 ER, Maastricht, The Netherlands
| | - Maree Brinkman
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 40 (Room C5.570), 6229 ER, Maastricht, The Netherlands
- Department of Clinical Studies and Nutritional Epidemiology, Nutrition Biomed Research Institute, Melbourne, Australia
- Cancer Epidemiology Division, Cancer Council Victoria, Melbourne, VIC, Australia
| | - Piet van den Brandt
- Department of Epidemiology, Schools for Oncology and Developmental Biology and Public Health and Primary Care, Maastricht University Medical Centre, Maastricht, The Netherlands
| | - Eric J Grant
- Department of Epidemiology Radiation Effects Research Foundation, Hiroshima, Japan
| | - Emily White
- Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Elisabete Weiderpass
- International Agency for Research on Cancer World Health Organization, Lyon, France
| | - Pietro Ferrari
- International Agency for Research on Cancer World Health Organization, Lyon, France
| | - Matthias B Schulze
- Department of Molecular Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
- Institute of Nutritional Science, University of Potsdam, Nuthetal, Germany
| | - Bas Bueno-de-Mesquita
- Department for Determinants of Chronic Diseases, National Institute for Public Health and the Environment, Bilthoven, The Netherlands
| | - Maria Jose-Sanchez
- Escuela Andaluza de Salud Publia, Granada, Spain
- Instituto de Investigación Biosanitaria, Granada, Spain
- Centro de Investigación Biomédica en Red de Epidemiología y Salud Pública, Madrid, Spain
- Department of Preventive Medicine and Public Health, University of Granada, Granada, Spain
| | - Bjorn Gylling
- Department of Medical Biosciences, Pathology, Umeå University, Umeå, Sweden
| | - Maurice P Zeegers
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in Metabolism, Maastricht University, Universiteitssingel 40 (Room C5.570), 6229 ER, Maastricht, The Netherlands
- CAPHRI School for Public Health and Primary Care, Maastricht University, Maastricht, The Netherlands
- School of Cancer Sciences, University of Birmingham, Birmingham, UK
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9
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Min K, Kim HT, Lee EH, Park H, Ha YS. Bacteria for Treatment: Microbiome in Bladder Cancer. Biomedicines 2022; 10:biomedicines10081783. [PMID: 35892683 PMCID: PMC9332069 DOI: 10.3390/biomedicines10081783] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/17/2022] [Accepted: 07/21/2022] [Indexed: 12/26/2022] Open
Abstract
The human body contains a variety of microbes. The distribution of microbes varies from organ to organ. Sequencing and bioinformatics techniques have revolutionized microbial research. Although previously considered to be sterile, the urinary bladder contains various microbes. Several studies have used urine and bladder tissues to reveal the microbiome of the urinary bladder. Lactic acid-producing bacteria, such as Bifidobacterium, Lactobacillus, and Lactococcus, are particularly beneficial for human health and are linked to bladder cancer. This review highlights the analysis protocols for microbiome research, the studies undertaken to date, and the microbes with therapeutic potential in bladder cancer.
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Affiliation(s)
- Kyungchan Min
- Department of Biomedical Science & Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea;
| | - Hyun Tae Kim
- Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu 41944, Korea;
| | - Eun Hye Lee
- Joint Institute for Regenerative Medicine, Kyungpook National University, Daegu 41940, Korea;
| | - Hansoo Park
- Department of Biomedical Science & Engineering, Gwangju Institute of Science and Technology, Gwangju 61005, Korea;
- Correspondence: (H.P.); (Y.-S.H.)
| | - Yun-Sok Ha
- Department of Urology, School of Medicine, Kyungpook National University, Kyungpook National University Chilgok Hospital, Daegu 41404, Korea
- Correspondence: (H.P.); (Y.-S.H.)
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10
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Dianatinasab M, Wesselius A, Salehi‐Abargouei A, Yu EYW, Fararouei M, Brinkman M, van den Brandt P, White E, Weiderpass E, Le Calvez‐Kelm F, Gunter MJ, Huybrechts I, Zeegers MP. Dietary fats and their sources in association with the risk of bladder cancer: A pooled analysis of 11 prospective cohort studies. Int J Cancer 2022; 151:44-55. [PMID: 35182086 PMCID: PMC9303525 DOI: 10.1002/ijc.33970] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 01/17/2022] [Accepted: 01/24/2022] [Indexed: 12/01/2022]
Abstract
The effects of fat intake from different dietary sources on bladder cancer (BC) risk remains unidentified. Therefore, the present study aimed to investigate the association between fat intakes and BC risk by merging world data on this topic. Data from 11 cohort studies in the BLadder cancer Epidemiology and Nutritional Determinants (BLEND) study, provided sufficient information on fat intake for a total of 2731 BC cases and 544 452 noncases, which yielded 5 400 168 person-years of follow-up. Hazard ratios (HRs), with corresponding 95% confidence intervals (CIs), were estimated using Cox-regression models stratified on cohort. Analyses were adjusted for total energy intake in kilocalories, gender, smoking status (model-1) and additionally for sugar and sugar products, beers, wine, dressing and plant-based and fruits intakes (model-2). Among women, an inverse association was observed between mono-unsaturated fatty acids (MUFAs) and BC risk (HR comparing the highest with the lowest tertile: 0.73, 95% CI: 0.58-0.93, P-trend = .01). Overall, this preventative effect of MUFAs on BC risk was only observed for the nonmuscle invasive bladder cancer (NMIBC) subtype (HR: 0.69, 95% CI: 0.53-0.91, P-trend = .004). Among men, a higher intake of total cholesterol was associated with an increased BC risk (HR: 1.37, 95% CI: 1.16-1.61, P-trend = .01). No other significant associations were observed. This large prospective study adds new insights into the role of fat and oils in BC carcinogenesis, showing an inverse association between consumption of MUFAs and the development of BC among women and a direct association between higher intakes of dietary cholesterol and BC risk among men.
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Affiliation(s)
- Mostafa Dianatinasab
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Anke Wesselius
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Amin Salehi‐Abargouei
- Nutrition and Food Security Research Center, Department of Nutrition, School of Public HealthShahid Sadoughi University of Medical SciencesYazdIran
| | - Evan Y. W. Yu
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Mohammad Fararouei
- Department of EpidemiologyShiraz University of Medical SciencesShirazIran
| | - Maree Brinkman
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
- Department of Clinical Studies and Nutritional EpidemiologyNutrition Biomed Research InstituteMelbourneAustralia
- Cancer Epidemiology DivisionCancer Council VictoriaMelbourneVictoriaAustralia
| | - Piet van den Brandt
- Department of Epidemiology, Schools for Oncology and Developmental Biology and Public Health and Primary CareMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Emily White
- Fred Hutchinson Cancer Research CenterSeattleWashingtonUSA
| | | | | | - Marc J. Gunter
- International Agency for Research on Cancer World Health OrganizationLyonFrance
| | - Inge Huybrechts
- International Agency for Research on Cancer World Health OrganizationLyonFrance
| | - Maurice P. Zeegers
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
- CAPHRI School for Public Health and Primary CareMaastricht UniversityMaastrichtThe Netherlands
- School of Cancer SciencesUniversity of BirminghamBirminghamUK
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11
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Mei Y, Wu Y, Ma L, Zhang H, Li L, Wang F. Overexpression of ROCK1 promotes cancer cell proliferation and is associated with poor prognosis in human urothelial bladder cancer. Mamm Genome 2021; 32:466-475. [PMID: 34322718 DOI: 10.1007/s00335-021-09896-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/14/2021] [Indexed: 11/27/2022]
Abstract
Rho-associated protein kinase 1 (ROCK1) has been reported to be overexpressed in many types of tumors, but its role in urothelial bladder cancer is poorly understood. The study aims to investigate the role of ROCK1 in urothelial bladder cancer and explored the underlying mechanism. Protein and mRNA levels of ROCK1 were detected in 64 urothelial bladder cancer patients using western blot, immunohistochemistry and qRT-PCR. Relationships between ROCK1 expression and clinicopathological factors and survival rate were analyzed. ROCK1 was silenced by shRNA in multiple urothelial bladder cancer cells to explore its function and underlying mechanism. ROCK1 expression was significantly increased in tumor tissues compared with the paired adjacent healthy tissues of patients. Higher ROCK1 expression of tumor tissues positively correlated with poor prognosis of patients (p = 0.0435). ROCK1 silence significantly inhibited cell proliferation and colony formation, and enhanced activation of apoptotic pathway in urothelial bladder cancer cells. High ROCK1 expression predicts poor prognosis of urothelial bladder cancer. ROCK1 silence inhibit cell proliferation and promote apoptosis, which may be of value as a therapeutic target for bladder cancer treatment.
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Affiliation(s)
- Yanhui Mei
- Department of Urology, Binzhou Medical University Hospital, No 661 Huanghe 2nd Road, Binzhou, 256603, Shandong, China
| | - Yuhai Wu
- Department of Urology, Binzhou Medical University Hospital, No 661 Huanghe 2nd Road, Binzhou, 256603, Shandong, China
| | - Longbo Ma
- Department of Oncology, Binzhou Medical University Hospital, No 661 Huanghe 2nd Road, Binzhou, 256603, Shandong, China
| | - Hongli Zhang
- Department of Oncology, Guizhou Provincial People's Hospital, No 83 Zhongshan East Road, Guiyang, 550002, Guizhou, China
| | - Lei Li
- Department of Oncology, Binzhou Medical University Hospital, No 661 Huanghe 2nd Road, Binzhou, 256603, Shandong, China
| | - Feng Wang
- Department of Oncology, Binzhou Medical University Hospital, No 661 Huanghe 2nd Road, Binzhou, 256603, Shandong, China.
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12
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Dianatinasab M, Wesselius A, Salehi‐Abargouei A, Yu EYW, Brinkman M, Fararouei M, van den Brandt P, White E, Weiderpass E, Le Calvez‐Kelm F, Gunter M, Huybrechts I, Liedberg F, Skeie G, Tjonneland A, Riboli E, Giles GG, Milne RL, Zeegers MP. Adherence to a Western dietary pattern and risk of bladder cancer: A pooled analysis of 13 cohort studies of the Bladder Cancer Epidemiology and Nutritional Determinants international study. Int J Cancer 2020; 147:3394-3403. [PMID: 32580241 PMCID: PMC7689707 DOI: 10.1002/ijc.33173] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 06/05/2020] [Accepted: 06/08/2020] [Indexed: 01/11/2023]
Abstract
Little is known about the association of diet with risk of bladder cancer. This might be due to the fact that the majority of studies have focused on single food items, rather than dietary patterns, which may better capture any influence of diet on bladder cancer risk. We aimed to investigate the association between a measure of Western dietary pattern and bladder cancer risk. Associations between adherence to a Western dietary pattern and risk of developing bladder cancer were assessed by pooling data from 13 prospective cohort studies in the "BLadder cancer Epidemiology and Nutritional Determinants" (BLEND) study and applying Cox regression analysis. Dietary data from 580 768 study participants, including 3401 incident cases, and 577 367 noncases were analyzed. A direct and significant association was observed between higher adherence to a Western dietary pattern and risk of bladder cancer (hazard ratio (HR) comparing highest with lowest tertile scores: 1.54, 95% confidence interval (CI): 1.37, 1.72; P-trend = .001). This association was observed for men (HR comparing highest with lowest tertile scores: 1.72; 95% CI: 1.51, 1.96; P-trend = .001), but not women (P-het = .001). Results were consistent with HR above 1.00 after stratification on cancer subtypes (nonmuscle-invasive and muscle-invasive bladder cancer). We found evidence that adherence to a Western dietary pattern is associated with an increased risk of bladder cancer for men but not women.
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Affiliation(s)
- Mostafa Dianatinasab
- Center for Health Related Social and Behavioral Sciences ResearchShahroud University of Medical SciencesShahroudIran
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Anke Wesselius
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Amin Salehi‐Abargouei
- Nutrition and food security research center, Department of Nutrition, School of Public HealthShahid Sadoughi University of Medical SciencesYazdIran
| | - Evan Y. W. Yu
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
| | - Maree Brinkman
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
- Department of Clinical Studies and Nutritional EpidemiologyNutrition Biomed Research InstituteMelbourneVictoriaAustralia
- Cancer Epidemiology DivisionCancer Council VictoriaMelbourneVictoriaAustralia
| | - Mohammad Fararouei
- Department of EpidemiologyShiraz University of Medical SciencesShirazIran
| | - Piet van den Brandt
- Department of Epidemiology, Schools for Oncology and Developmental Biology and Public Health and Primary CareMaastricht University Medical CentreMaastrichtThe Netherlands
| | - Emily White
- Fred Hutchinson Cancer Research CenterSeattleWashingtonUSA
| | | | | | - Marc Gunter
- International Agency for Research on Cancer World Health OrganizationLyonFrance
| | - Inge Huybrechts
- International Agency for Research on Cancer World Health OrganizationLyonFrance
| | - Fredrik Liedberg
- Department of Urology Skåne University HospitalMalmöSweden
- Institution of Translational MedicineLund UniversityMalmöSweden
| | - Guri Skeie
- Department of Community MedicineUIT The Arctic University of NorwayTromsøNorway
| | - Anne Tjonneland
- Danish Cancer Society Research CenterCopenhagenDenmark
- Department of Public HealthUniversity of CopenhagenCopenhagenDenmark
| | - Elio Riboli
- Department of Epidemiology and Biostatistics, School of Public HealthImperial College LondonLondonUK
| | - Graham G. Giles
- Cancer Epidemiology DivisionCancer Council VictoriaMelbourneVictoriaAustralia
- Centre for Epidemiology and BiostatisticsMelbourne School of Population and Global Health, The University of Melbourne, 207 Bouverie StreetMelbourneVictoriaAustralia
- Precision Medicine, School of Clinical Sciences at Monash HealthMonash UniversityClaytonVictoriaAustralia
| | - Roger L. Milne
- Cancer Epidemiology DivisionCancer Council VictoriaMelbourneVictoriaAustralia
- Centre for Epidemiology and BiostatisticsMelbourne School of Population and Global Health, The University of Melbourne, 207 Bouverie StreetMelbourneVictoriaAustralia
- Precision Medicine, School of Clinical Sciences at Monash HealthMonash UniversityClaytonVictoriaAustralia
| | - Maurice P. Zeegers
- Department of Complex Genetics and Epidemiology, School of Nutrition and Translational Research in MetabolismMaastricht UniversityMaastrichtThe Netherlands
- CAPHRI School for Public Health and Primary CareMaastricht UniversityThe Netherlands
- School of Cancer SciencesUniversity of BirminghamBirminghamUK
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13
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Xu X. Dairy Product Consumption and Bladder Cancer Risk in the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cohort. Front Nutr 2020; 7:97. [PMID: 32850931 PMCID: PMC7396587 DOI: 10.3389/fnut.2020.00097] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2020] [Accepted: 05/27/2020] [Indexed: 01/22/2023] Open
Abstract
Evidence has suggested that dairy product consumption lowers the risk of several cancers, but these benefits may not occur with bladder cancer. In a cohort of 101,721 subjects in the Prostate, Lung, Colorectal, and Ovarian (PLCO) Cancer Screening Trial, we analyzed the effects of dairy product intake on bladder cancer risk using Cox proportional hazards regression. After a median of 12.5 years of follow-up, 776 new cases of bladder cancer were identified. We found no statistically significant association between total milk intake and bladder cancer risk. The multivariate-adjusted hazard ratio (HR) of bladder cancer for participants in the highest category of total milk intake compared with those in the lowest category was 1.13 (95% CI: 0.92–1.40; p for trend = 0.436). Among individual dairy foods, no statistically significant association was observed for a broad range of dairy products, including whole milk, 2% milk, 1% milk, skim milk, yogurt, regular butter, low fat butter, regular cheese, low fat cheese, and no fat cheese. These associations were not modified by smoking status (p for interaction > 0.05). In conclusion, findings from this large prospective analysis do not support an inverse association between dairy product consumption and bladder cancer risk.
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Affiliation(s)
- Xin Xu
- Department of Urology, School of Medicine, The First Affiliated Hospital, Zhejiang University, Hangzhou, China
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