Copper Deficiency
What is Copper Deficiency?
Copper deficiency happens when your body does not have enough copper to support normal functions. Copper is a trace mineral that helps your body produce red blood cells, maintain healthy bones, and support nerve function. Your body cannot make copper on its own, so you need to get it from food.
Most people get enough copper from their diet, but certain conditions can interfere with absorption. When copper levels drop too low, it affects many body systems. Your blood cells may not form correctly, leading to anemia. Your nervous system can suffer damage that affects movement and sensation. Your immune system may weaken, making you more prone to infections.
Copper deficiency is relatively rare but can be serious if left untreated. It often develops slowly over months or years. Early detection through blood testing helps prevent long-term complications. Most cases respond well to treatment once identified.
Symptoms
- Fatigue and weakness that does not improve with rest
- Pale skin due to anemia
- Numbness or tingling in hands and feet
- Difficulty walking or poor coordination
- Frequent infections or illness
- Brittle bones or osteoporosis
- Memory problems or difficulty concentrating
- Vision loss or changes
- Hair loss or changes in hair texture
- Elevated cholesterol levels
Some people have no symptoms in the early stages of copper deficiency. Symptoms typically develop gradually as copper stores in the body become depleted. Nerve damage symptoms can be permanent if deficiency continues untreated for too long.
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Causes and risk factors
Copper deficiency most often results from problems absorbing copper rather than not eating enough. Certain gastrointestinal surgeries, especially gastric bypass, can reduce copper absorption significantly. Conditions like celiac disease or inflammatory bowel disease damage the intestines and interfere with mineral absorption. Taking high doses of zinc supplements, typically more than 50 mg per day, blocks copper absorption in the gut. Some people take zinc for immune support without realizing it depletes copper over time.
Other risk factors include consuming very high levels of vitamin C or iron supplements, which can interfere with copper. Premature infants and people on long-term tube feeding may not get adequate copper. Rarely, genetic conditions affect how the body processes copper. People who have had stomach or intestinal surgery face higher risk. Anyone taking zinc supplements for extended periods should monitor their copper levels through blood testing.
How it's diagnosed
Doctors diagnose copper deficiency through blood tests that measure copper and ceruloplasmin levels. Ceruloplasmin is the protein that carries about 95% of the copper in your bloodstream. When copper levels drop, ceruloplasmin typically drops too. Blood tests may also show anemia with larger-than-normal red blood cells, measured by mean corpuscular volume or MCV. This pattern of anemia can suggest copper deficiency when combined with low copper levels.
Rite Aid offers testing for copper deficiency through our preventive health panel at Quest Diagnostics locations nationwide. Our flagship panel measures copper, ceruloplasmin, and MCV along with 200+ other biomarkers. Getting tested helps identify deficiency early, before serious nerve damage occurs. Your results come with insights to help you understand what your levels mean and next steps for treatment.
Treatment options
- Copper supplements, typically 2 to 8 mg per day, prescribed by your doctor
- Eating copper-rich foods like shellfish, nuts, seeds, and whole grains
- Reducing or stopping high-dose zinc supplements that block copper absorption
- Treating underlying conditions that interfere with mineral absorption
- Monitoring blood levels regularly to ensure copper returns to normal range
- Adjusting tube feeding formulas to include adequate copper
- Working with a dietitian to optimize mineral balance in your diet
- Addressing any vitamin or mineral imbalances that affect copper status
Concerned about Copper Deficiency? Get tested at Rite Aid.
- Simple blood draw at your nearest lab
- Results in days, not weeks
- Share results with your doctor
Frequently asked questions
Shellfish like oysters and crab contain the most copper per serving. Nuts and seeds, especially cashews and sunflower seeds, provide good amounts. Organ meats like liver, whole grains, beans, and dark leafy greens also contain copper. Most people who eat a varied diet get enough copper from food alone.
Yes, taking more than 50 mg of zinc daily can block copper absorption in your gut. Zinc and copper compete for the same absorption pathways in your intestines. If you take zinc supplements regularly, you should monitor your copper levels through blood testing. Some multivitamins balance zinc with copper to prevent this problem.
Most people see improvement in blood counts within 4 to 6 weeks of starting copper supplementation. Nerve symptoms may take several months to improve if they improve at all. Severe nerve damage from long-standing deficiency can be permanent. This is why early detection through blood testing matters so much.
No, they are opposite conditions. Copper deficiency means you have too little copper in your body. Wilson disease is a genetic condition where copper builds up to toxic levels in your liver and brain. Both conditions can be detected through blood tests that measure copper and ceruloplasmin levels.
Yes, copper is essential for producing healthy red blood cells. Without enough copper, your body cannot make red blood cells properly, leading to anemia. This type of anemia often shows larger-than-normal red blood cells on testing. Copper deficiency anemia may not respond to iron supplements alone.
People who have had gastric bypass surgery face the highest risk. Those taking high-dose zinc supplements for extended periods are also at risk. People with celiac disease, Crohn disease, or other conditions affecting nutrient absorption may develop deficiency. Premature infants and people on long-term tube feeding need careful monitoring.
Ceruloplasmin is a protein in your blood that carries about 95% of your copper. When you have copper deficiency, ceruloplasmin levels usually drop too. Testing both copper and ceruloplasmin together gives a more complete picture of your copper status. Low levels of both strongly suggest copper deficiency.
Yes, copper plays an important role in immune function. People with copper deficiency often get sick more frequently. Their white blood cells may not work as effectively to fight infections. Correcting the deficiency typically helps restore normal immune function within a few months.
Most adults need about 900 micrograms of copper daily from food. Pregnant women need 1,000 micrograms and breastfeeding women need 1,300 micrograms. These amounts are typically easy to get from a balanced diet. Copper supplements should only be taken under medical supervision.
Yes, eating a varied diet that includes copper-rich foods prevents deficiency in most people. If you take zinc supplements, keep doses under 40 mg daily or choose a supplement that includes copper. People who have had gastrointestinal surgery should have their copper levels checked regularly. Annual blood testing helps catch deficiency early before symptoms develop.