Pablo Olea-Rodríguez¹, Juan Jesús Pérez-Núñez¹.

  1. Faculty of Medicine, University of Granada (UGR)
    TRANSLATED BY:
    Irene Torres-Martínez², Paola Rodríguez-González², Mercedes Ortigosa-García², Alberto González-Ramírez², Carmen
    Salmerón-Borja².
  2. Faculty of Translation and Interpreting, University of Granada (UGR).

Abstract
Introduction
Prostate cancer is one of the most prevalent cancers among men. An increase of 35,126 new cases is expected by 2020 in Spain alone. The aim of this review is to study the relationship between obesity and the prognosis of prostate cancer, which is playing an increasingly important role in our health system.
Method
A systematic search in several databases (MEDLINE, Web of Science core collection and SCOPUS) was conducted. This search included only observational studies (cohort and case-control studies) from 2015 to
February 2020 on prostate cancer-specific mortality and one obesity marker (body mass index, BMI). The data extracted are the Hazard Ratio.
Results
8 studies (7 prospective cohorts and 1 retrospective cohort) were obtained from the search carried out for this review and their Hazard Ratio was analyzed. A positive association was obtained in 5 studies for a
BMI>27.5 kg/m² and BMI<22.5 kg/m². Paradoxically, one associated a protective association for a BMI<25 kg/m².
Conclusion
The literature reviewed indicates that obesity appears to be a bad prognostic factor in prostate cancer. However, there is not enough scientific evidence to validate this statement as no studies with conclusive
results were found. Therefore, more studies with other, more specific obesity factors are needed in order to conduct a more comprehensive analysis to confirm this association.

Keywords: obesity, body mass index, BMI, prostate cancer, specific mortality, prognosis.

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