Abstract:Objective To investigate the effects of growth hormone-insulin-like growth factor-1 (GH-IGF-1) and antioxidant capacity indicators in patients with hyperthyroidism. Methods A total of 236 patients with hyperthyroidism admitted to our hospital from March 2016 to March 2017 were enrolled as the study group at the same time, 200 iodine excessive intake patients were collected into the odine excessive intake group and 236 healthy volunteers were the control group. The free triiodothyronine (FT3), free thyroxine (FT4), thyrotrophin (TSH), growth hormone (GH), Insulin-like growth factor-1 (IGF-1), insulin (insulin, Ins), malonaldehyde (MDA), glutathione peroxidase (GPX) and superoxide dismutase (SOD) were detected among 3 groups. Results Compared with the control group, the levels of FT3, FT4, GH, IGF-1, Ins and MDA in the iodine intake group and the study group were increased (P?0.05), and the levels of TSH, GPX and SOD were decreased (P?0.05). Compared with the iodine intake group, the levels of FT3, FT4, GH, IGF-1, Ins, and MDA in the study group were increased (P?0.05), and the levels of TSH, GPX, and SOD were decreased (P?0.05). Conclusion The GH-IGF-1 is destroyed in patients with hyperthyroidism, the levels of GH and IGF-1 are significantly increased, the antioxidant capacity is decreased, and the excessive iodine intake may be involved in the process of damaging thyroid function, affecting GH-IGF-1 and antioxidant capacity.