date:Jun 22, 2012
women and randomly divided them into three groups: The first group received no intervention and acted as controls, the second group received oral contraceptives only (0.03 mg ethinylestradiol and 0.15 mg levonorgestrel), and the third group received the contraceptives plus the vitamin supplements.
At the end of four weeks of study, the contraceptive-only group experienced increases in MDA levels, while activities of the antioxidant enzymes glutathione peroxidase and glutathione reductase were