Which condition warrants monitoring and potential reduction of copper supplementation due to excretion considerations?

• A. Kidney disease
• B. Liver disease
• C. Lung disease
• D. Skin disease

Answer: (B)

Copper handling relies heavily on the liver, which processes copper and excretes it through bile. When the liver is diseased, biliary excretion can be impaired, leading to reduced copper elimination. If you’re continuing supplementation in this context, copper can accumulate and potentially cause toxicity. That’s why liver disease prompts monitoring of copper status and possibly lowering the supplement dose to avoid excess copper. Kidney, lung, or skin diseases don’t typically alter copper excretion in the same way, since copper is mainly cleared via the biliary route rather than the kidneys, and these conditions don’t directly impair that excretory pathway.