The copper in GHK-Cu raises a small risk of copper overload at the doses sold for skin and supervised use
J Endocrinol (2013) 219(1):5968.10.1530/JOE-13-0146 27 SunHXLuNLuoXZhaoLLiuJM
Taylor and Francis Ltd
Why Hangovers Happen When you consume alcohol, your body rapidly loses fluids, vitamins, and electrolytes
Copper overload May contribute to anxiety, panic, insomnia, irritability, estrogen-related mood symptoms, postpartum depression and low zinc
The changes to thyroid lab tests that occur during illness are felt to have some evolutionary advantage in that they divert resources from things that dont matter (such as hair growth, skin health, and nail health) to things that do matter (such as immune system function and heart health)