Impact of antioxidant treatment on DNA fragmentation index : a double-blind placebo-controlled randomized trial
Background: Previous reports on effect of antioxidants on sperm DNA integrity were equivocal, and there is a lack of randomized, placebo-controlled studies. Objectives: To evaluate the efficacy of combined antioxidant treatment in subfertile men with normal reproductive hormone levels and high sperm DNA fragmentation index (DFI). Materials and methods: This placebo-controlled, double-blind, random