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    Costs of cancer attributable to excess body weight in the Brazilian public health system in 2018.

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    ObjectivesThe prevalence of excess body weight (EBW) has increased over the last decades in Brazil, where 55.4% of the adult population was overweight in 2019. EBW is a well-known risk factor for several types of cancer. We estimated the federal cost of EBW-related cancers in adults, considering the medical expenditures in the Brazilian Public Health System.MethodsWe calculated the costs related to 11 types of cancer considering the procedures performed in 2018 by all organizations that provide cancer care in the public health system. We obtained data from the Hospital and Ambulatory Information Systems of the Brazilian Public Health System. We calculated the fractions of cancer attributable to EBW using the relative risks from the literature and prevalence from a nationally representative survey. We converted the monetary values in Reais (R)tointernationaldollars(Int) to international dollars (Int), considering the purchasing power parity (PPP) of 2018.ResultsIn Brazil, the 2018 federal cost for all types of cancers combined was Int1.73billion,ofwhichnearlyInt 1.73 billion, of which nearly Int 710 million was spent on EBW-related cancer care and Int30millionwasattributabletoEBW.OutpatientandinpatientexpendituresreachedInt 30 million was attributable to EBW. Outpatient and inpatient expenditures reached Int 20.41 million (of which 80% was for chemotherapy) and Int$ 10.06 million (of which 82% was for surgery), respectively. Approximately 80% of EBW-attributable costs were due to breast, endometrial and colorectal cancers.ConclusionA total of 1.76% of all federal cancer-related costs could be associated with EBW, representing a substantial economic burden for the public health system. We highlight the need for integrated policies for excess body weight control and cancer prevention
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