The possible absolute effects of red and processed meat consumption on cancer mortality and incidence are very small, and the certainty of evidence is low to very low.La Agencia Internacional de Energías Renovables (IRENA) produce estadísticas completas sobre una variedad de temas relacionados con las energías renovables. Limited causal inferences due to residual confounding in observational studies, risk of bias due to limitations in diet assessment and adjustment for confounders, recall bias in dietary assessment, and insufficient data for planned subgroup analyses. Evidence of low to very low certainty suggested that each intake reduction of 3 servings of processed meat per week was associated with very small decreases in overall cancer mortality over a lifetime prostate cancer mortality and incidence of esophageal, colorectal, and breast cancer. Low-certainty evidence suggested that an intake reduction of 3 servings of unprocessed meat per week was associated with a very small reduction in overall cancer mortality over a lifetime. Of 118 articles (56 cohorts) with more than 6 million participants, 73 articles were eligible for the dose-response meta-analyses, 30 addressed cancer mortality, and 80 reported cancer incidence. Teams of 2 reviewers independently extracted data and assessed risk of bias 1 reviewer evaluated the certainty of evidence, which was confirmed or revised by the senior reviewer. To evaluate the possible causal relationship between intake of red and processed meat and cancer mortality and incidence.Įmbase, Cochrane Central Register of Controlled Trials, Web of Science, CINAHL, and ProQuest from inception until July 2018 and MEDLINE from inception until April 2019 without language restrictions.Ĭohort studies that included more than 1000 adults and reported the association between consumption of unprocessed red and processed meat and cancer mortality and incidence. The original version (PDF) is appended to this article as a Supplement.Ĭancer incidence has continuously increased over the past few centuries and represents a major health burden worldwide. 13 Dalhousie University, Halifax, Nova Scotia, and McMaster University, Hamilton, Ontario, Canada (B.C.J.).12 McMaster University, Hamilton, Ontario, Canada, and Iberoamerican Cochrane Centre Barcelona, Biomedical Research Institute Sant Pau, and CIBER de Epidemiología y Salud Pública, Barcelona, Spain (P.A.).11 Jagiellonian University Medical College, Krakow, Poland (M.M.B.).10 University of British Columbia, Vancouver, British Columbia, Canada (D.S.).9 University of Sorocaba, Sorocaba, Sao Paulo, Brazil (L.C.L.).8 Iberoamerican Cochrane Centre Barcelona, Biomedical Research Institute Sant Pau, and CIBER de Epidemiología y Salud Pública, Barcelona, Spain (C.V., M.R.).7 Jagiellonian University Medical College, Kraków, Poland (D.S.).6 Aseer Central Hospital, Abha, Saudi Arabia (A.A.).5 Beijing University of Chinese Medicine, Beijing, China (Y.Z.).4 Science and Technology Institute, Universidade Estadual Paulista, São José dos Campos, São Paulo, Brazil, and Dalhousie University, Halifax, Nova Scotia, Canada (R.E.).3 Dalhousie University, Halifax, Nova Scotia, Canada, and Netherlands Comprehensive Cancer Organisation, Utrecht, the Netherlands (R.W.V.).2 McMaster University, Hamilton, Ontario, Canada (D.Z., G.H.G., G.L., N.R., M.K.P., M.Z., J.J.B.).1 Chosun University, Gwangju, Republic of Korea (M.A.H.).