Se and cancer- overall, evidence for reduced risk of lung, bladder, colorectal , liver, oesophageal , thyoid, postate, gastric cardia with increased Se status
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Summary from observational data show se has beneficial association between se status and risk of cancer mortality
Cohort studies
prospective cohort- cancer rhazard ratio of mortality redcued with increasing Se serum level until 130ug/L THEN increases after 150ug/L- varies depending on cancer type
Meta-analysis observational studies- OR lower of cancer risk with higher Se serum and higher toenail se
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