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

Long-term association between the intensity of cosmic rays and mortality rates in the city of Sao Paulo

Full text
Vieira, C. L. Z. [1, 2] ; Janot-Pacheco, E. [3] ; Lage, C. [4] ; Pacini, A. [5] ; Koutrakis, P. [2] ; Cury, P. R. [6] ; Shaodan, H. [2] ; Pereira, L. A. [1] ; Saldiva, P. H. N. [1]
Total Authors: 9
[1] Univ Sao Paulo, Med Sch, Dept Pathol, Expt Air Pollut Lab, Sao Paulo - Brazil
[2] Harvard Sch Publ Hlth, Dept Environm Hlth, Boston, MA 02115 - USA
[3] Univ Sao Paulo, Inst Astron Geophys & Atmospher Sci, Sao Paulo - Brazil
[4] Univ Fed Rio de Janeiro, Inst Biofis Carlos Chagas Filho, Rio De Janeiro, RJ - Brazil
[5] Johns Hopkins Univ, Appl Phys Lab, Laurel, MD - USA
[6] Univ Fed Bahia, Dept Periodontol, Salvador, BA - Brazil
Total Affiliations: 6
Document type: Journal article
Web of Science Citations: 0

Human beings are constantly exposed to many kinds of environmental agents which affect their health and lifespan. Galactic cosmic rays (GCRs) are the main source of ionizing radiation in the lower troposphere, in which secondary products can penetrate the ground and underground layers. GCRs affect the physical-chemical properties of the terrestrial atmosphere, as well as the biosphere. GCRs are modulated by solar activity and latitudinal geomagnetic field distribution. In our ecological/populational retrospective study, we analyzed the correlation between the annual flux of local secondary GCR-induced ionization (CRII) and mortality rates in the city of Sao Paulo, Brazil, between 1951-2012. The multivariate linear regression analyses adjusted by demographic and weather parameters showed that CRII are significantly correlated with total mortality, infectious disease mortality, maternal mortality, and perinatal mortality rates (p < 0.001). The underlying mechanisms are still unclear. Further cross-sectional and experimental cohort studies are necessary to understand the biophysical mechanisms of the association found here. (AU)

FAPESP's process: 13/15154-3 - Analysis of the association between solar radiation activities and galactic cosmic rays during the solar cycles of 11 years and the incidence of mortality in São Paulo since 1930
Grantee:Carolina Letícia Zilli Vieira
Support Opportunities: Scholarships in Brazil - Post-Doctorate