Lower-quality formulations may contain excess free copper ions that deposit on or in the skin
Fankhauser CD, Grogg JB, Hayoz S, Wettstein MS, Dieckmann K, Sulser T, Bode P, Clarke NW, Beyer J, Hermanns T (2020) Risk Factors and Treatment Outcomes of 1,375 Patients with Testicular Leydig Cell Tumors: Analysis of Published Case Series Data
High GGT levels often indicate vitamin B6, B9, or B12 deficiencies, reduced antioxidant activity, and increased reactive oxygen species (ROS)
Over the counter: aspirin and non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen
Mitochondrial electron transport chain, ROS generation and uncoupling (Review)