Copper铜

Small but essential

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少量但关键

Copper's daily requirement is small (RDA 0.9 mg/day, UL 10 mg/day), but it is in no way optional — it's the metal core of iron transport, collagen crosslinking, mitochondrial energy, and antioxidant defense.

Food density (mg / 100g):

Beef liver ~14.6 mg — a 50 g portion is several times the daily RDAOysters ~4.5, cashews ~2.2, dark chocolate 70%+ ~1.8, sunflower seeds ~1.8, sesame ~1.6Dried shiitake ~5.2, lamb ~0.4, eggs ~0.07; milk only trace amounts
A typical mixed diet delivers 1–1.5 mg/day, easy to meet.

The people who actually risk copper deficiency are not average eaters — they are specific groups:

Long-term high-dose zinc supplementation (>25–50 mg/day) — see the zinc scene at the end; the mechanism is realAfter gastric bypass or bariatric surgeryChronic diarrhea / Crohn's diseaseLong-term TPN (total parenteral nutrition) without copperOver 50% of calories from refined rice/flour with very little other food
Practical takeaway: normal people don't need to supplement copper — occasional liver, chocolate, nuts, and seafood are enough; people on long-term high-dose zinc should pair copper alongside, with a reference Zn:Cu ratio of 10:1.

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本站提供科普与一般性建议，不替代医师诊断或处方；有症状或正在服药请咨询合格医师。 Educational content, not medical advice — consult a clinician for diagnosis or treatment.

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Copper铜

Small but essential

Stop 1/5

少量但关键

Copper's daily requirement is small (RDA 0.9 mg/day, UL 10 mg/day), but it is in no way optional — it's the metal core of iron transport, collagen crosslinking, mitochondrial energy, and antioxidant defense.

Food density (mg / 100g):

Beef liver ~14.6 mg — a 50 g portion is several times the daily RDAOysters ~4.5, cashews ~2.2, dark chocolate 70%+ ~1.8, sunflower seeds ~1.8, sesame ~1.6Dried shiitake ~5.2, lamb ~0.4, eggs ~0.07; milk only trace amounts
A typical mixed diet delivers 1–1.5 mg/day, easy to meet.

The people who actually risk copper deficiency are not average eaters — they are specific groups:

Long-term high-dose zinc supplementation (>25–50 mg/day) — see the zinc scene at the end; the mechanism is realAfter gastric bypass or bariatric surgeryChronic diarrhea / Crohn's diseaseLong-term TPN (total parenteral nutrition) without copperOver 50% of calories from refined rice/flour with very little other food
Practical takeaway: normal people don't need to supplement copper — occasional liver, chocolate, nuts, and seafood are enough; people on long-term high-dose zinc should pair copper alongside, with a reference Zn:Cu ratio of 10:1.

Read story

本站提供科普与一般性建议，不替代医师诊断或处方；有症状或正在服药请咨询合格医师。 Educational content, not medical advice — consult a clinician for diagnosis or treatment.