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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Preventable fractions of colon and breast cancers by increasing physical activity in Brazil: perspectives from plausible counterfactual scenarios

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Machado de Rezende, Leandro Fornias [1] ; Totaro Garcia, Leandro Martin [2] ; Mielke, Gregore Iven [3, 4] ; Lee, Dong Hoon [5] ; Wu, Kana [5] ; Giovannucci, Edward [6, 7, 5, 8] ; Eluf-Neto, Jose [1]
Total Authors: 7
[1] Univ Sao Paulo, Fac Med FMUSP, Dept Med Prevent, Sao Paulo, SP - Brazil
[2] Univ Cambridge, Sch Clin Med, MRC Epidemiol Unit, UKCRC Ctr Diet & Act Res, Cambridge - England
[3] Univ Fed Pelotas, Postgrad Program Epidemiol, Pelotas, RS - Brazil
[4] Univ Queensland, Sch Human Movement & Nutr Sci, Brisbane, Qld - Australia
[5] Harvard TH Chan Sch Publ Hlth, Dept Nutr, Boston, MA - USA
[6] Harvard Med Sch, Boston, MA - USA
[7] Harvard TH Chan Sch Publ Hlth, Dept Epidemiol, Boston, MA - USA
[8] Brigham & Womens Hosp, Channing Div Network Med, 75 Francis St, Boston, MA 02115 - USA
Total Affiliations: 8
Document type: Journal article
Source: CANCER EPIDEMIOLOGY; v. 56, p. 38-45, OCT 2018.
Web of Science Citations: 0

Background: Physical activity is associated with lower risk of colon and breast cancers. Herein we estimated preventable fractions of colon and breast cancers in Brazil by increasing population-wide physical activity to different counterfactual scenarios. Methods: We used data from a representative national survey in Brazil and corresponding relative risks of colon and postmenopausal breast cancers from a meta-analysis. Estimated cancer incidence was retrieved from GLOBOCAN and Brazilian National Cancer Institute. Five counterfactual scenarios for physical activity were considered: (i) theoretical minimum risk exposure level (>= 8,000 metabolic equivalent of tasks-minute/week-MET-min/week); (ii) physical activity recommendation (>= 600 MET-min/week); (iii) a 10% reduction in prevalence of insufficient physical inactivity (< 600 MET-min/week); (iv) physical activity level in each state equals the most active state in Brazil; (v) closing the gender differences in physical activity. Results: About 19% (3,630 cases) of colon cancers and 12% (6,712 cases) of postmenopausal breast cancers could be prevented by increasing physical activity to >= 8,000 MET-min/week. Plausible counterfactual scenarios suggested the following impact on cancer prevention: reaching physical activity recommendation: 1.7% (1,113 cases) of breast and 6% (1,137 cases) of colon; 10% reduction in physical inactivity prevalence: 0.2% (111 cases) of breast and 0.6% (114 cases) of colon; most active state scenario: 0.3% (168 cases) of breast and 1% (189 cases) of colon; reducing gender differences in physical activity: 1.1% (384 cases) of breast and 0.6% (122 cases) of colon. Conclusions: High levels of physical activity are required to achieve a sizable impact on breast and colon cancer prevention in Brazil. (AU)

FAPESP's process: 16/21390-0 - Burden of cancer attributable to lifestyle risk factors in Brazil
Grantee:Leandro Fórnias Machado de Rezende
Support type: Scholarships abroad - Research Internship - Doctorate
FAPESP's process: 14/25614-4 - Physical inactivity and cancer: from evaluation of etiological evidence to public health impact
Grantee:Leandro Fórnias Machado de Rezende
Support type: Scholarships in Brazil - Doctorate