According to the pooled analysis, supplementation with DPF and iron tablets in the third trimester of pregnancy led to more an increase in changes of Hb levels from baseline to post-intervention than consumption of iron tablets alone among parturients with mild/moderate pregnancy-related anemia (eight non-RCTs, WMD= 0.93 gr/dl; 95% CI [0.55 to 1.32 gr/dl]; P< 0.001) (Fig. 6). This evidence concerns the gene GSTM1 and anemia.