ABSTRACT
Objective To evaluate the impact of low dietary glycemic index on the risk of coronaryheart disease (CHD).Methods We searched the Cochrane Database of Systematic Reviews,JBI Database of Systematic Reviews,MEDLINE,EMbase,CBMdisk,and CNKI to collect cohort studies from 2000 to 2011.The quality of cohort studies was critically appraised and data were extracted by 4 reviewers independently.Meta-analysis were conducted for the eligible cohort studies using RevMan 5.0.Results Five cohort studies were included,and 128 911 samples were researched.The result of meta analysis indicated that low dietary glycemic index was a protective factor of CHD,RR value was 1.25,95％ CI was (1.13,2.15).Further more,the result was only effective to female,RR value was 1.35,95％ CI was (1.16,1.57),but not to male,RR value was 0.96,95％CI was (0.76,1.31).Conclusions Low dietary glycemic index can decrease the risk of CHD,but it is still to be proved whether it is suitable to male.