I think less severe forms of copper overload are underappreciated. I personally did substantial testing and finally put pieces together to form a hypothesis that my easy bruising was caused by copper excess (not noted on common lab testing) causing functional vitamin C deficiency. By taking zinc supplements and vitamin C supplements along with bone broth the bruising went away. Note that while on an almost carnivore diet including organ meats I continued to have substantial bruising. So I now am biased by personal experience but with that bias I see it every once in a while in practice. I personally won't be drinking from any copper utensils.