Folatos y riesgo de cáncer de mama: revisión sistemática / Folate and breast cancer risk: A systematic review
Rev. méd. Chile
;
140(2): 251-260, feb. 2012. ilus, tab
Artigo
em Espanhol
| LILACS
| ID: lil-627635
ABSTRACT
An increased folate intake may be beneficial in deficient populations. However, in women with adequate levels it may not deliver additional benefits while it may increase the risk for some forms of cancer. A systematic literature review of benefits or risks of folate in the development of breast cancer was performed using MEDLINE, systematic review of selected articles and references of the selected articles looking specifically at serum folate levels, dietary folate intake or total folate intake and the risk of developing breast cancer. Fourteen case-control studies, fourteen cohort studies, seven case-control nested studies, two randomized trials and two meta-analyses were selected for analysis based on pre-established criteria. The reviewed evidence does not support the hypothesis that higher intakes of dietary folate reduce the risk for breast cancer. Some studies showed a higher risk of breast cancer in populations exposed to high folate intake post fortification, especially when folic acid is used. The results support the need to be cautious and to limit the exposure of women to high intakes of folic acid, especially in countries with mandatory food fortification.
Texto completo:
DisponíveL
Índice:
LILACS (Américas)
Assunto principal:
Neoplasias da Mama
/
Alimentos Fortificados
/
Ácido Fólico
Tipo de estudo:
Ensaio Clínico Controlado
/
Estudo de etiologia
/
Estudo observacional
/
Fatores de risco
/
Revisões Sistemáticas Avaliadas
Limite:
Feminino
/
Humanos
País/Região como assunto:
América do Sul
/
Chile
Idioma:
Espanhol
Revista:
Rev. méd. Chile
Assunto da revista:
Medicina
Ano de publicação:
2012
Tipo de documento:
Artigo
País de afiliação:
Chile
/
Espanha
Instituição/País de afiliação:
Universidad de Chile/CL
/
Universitat de les Illes Balears/ES
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