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Copper is a trace mineral your body needs in small amounts to function well. It plays a role in making red blood cells, producing energy, keeping your immune system working, and helping the body use iron.
Many people get enough copper from food, but knowing which foods are highest in copper makes it easier to include them in a balanced diet. Below are 10 tasty, practical sources and simple notes about how they contribute to copper intake.
Top 10 Copper-Rich Foods
1. Oysters
Oysters are one of the richest food sources of copper. A few medium oysters can supply a large portion of the daily copper need.
They also provide zinc, vitamin B12, and omega-3 fats, nutrients that support immune and heart health.
2. Dark Chocolate
Dark chocolate (choose 70% cocoa or higher) contains notable copper levels alongside antioxidants called flavonoids. These plant compounds are linked to improved blood flow and heart health in some studies.
Keep portions small because chocolate is calorie-dense.
3. Sweet Potatoes
Sweet potatoes are a plant-based source of copper and also supply fiber and vitamin A precursors (beta-carotene). One medium baked sweet potato contributes a meaningful share of daily copper needs.
4. Shellfish and Fish
Crab, lobster, clams, and many fish species like tuna and halibut provide copper along with high-quality protein and other minerals. Shellfish tend to be especially high in copper.
5. Nuts and Seeds
Cashews, almonds, sunflower seeds, and sesame seeds are convenient snacks that add copper. They also supply healthy fats and plant protein.
Snack idea: sprinkle seeds on salads or yogurt to boost copper and texture.
Lentils, chickpeas, and beans are affordable sources of copper and fiber. A cup of cooked legumes can provide a substantial portion of your daily copper need while supporting gut health thanks to their fiber.
7. Mushrooms
Shiitake and other mushrooms contain copper and B vitamins. Mushrooms are versatile: add them to stir-fries, soups, or roasted vegetable mixes.
8. Organ Meats (Liver)
Liver (beef, chicken) is extremely rich in copper and other nutrients like iron and vitamin A. Because copper levels are high, small portions are enough to meet requirements.
People who avoid organ meats can get copper from the other foods listed.
9. Leafy Greens
Cooked spinach, kale, and collard greens provide copper plus iron, vitamin K, and other micronutrients. Greens are a simple way to add nutrients to many meals.
10. Quinoa and Whole Grains
Quinoa and whole grains supply copper along with fiber and B vitamins. Quinoa is especially useful for those following gluten-free or vegetarian diets.
Below is a short video with additional practical tips on nutrient-rich foods and how to include them in meals.
Recommended intake varies by age and life stage. For most adults, about 900 micrograms (mcg) per day meets needs. Pregnant and breastfeeding people need slightly more.
Most people can meet this amount through a varied diet that includes several of the foods listed above.
Safety, Interactions, and Practical Tips
Copper is essential but too much can be harmful. Very high copper intake from supplements or contaminated water can cause nausea, abdominal pain, and in extreme cases liver damage.
Supplements are usually unnecessary if you eat a balanced diet. If you consider a copper supplement, consult a healthcare professional first, especially if you take iron or zinc supplements, because high doses of one mineral can affect absorption of another.
Tip: Combine copper-rich plant foods with vitamin C sources (like citrus or tomatoes) to support iron absorption when eating plant-based iron sources.
Tip: Rotate protein sources (fish, legumes, nuts) to maintain variety and balance mineral intake.
Tip: If you have liver disease or a condition that affects copper metabolism (for example, Wilson disease), follow your clinician’s guidance and avoid excess copper.
Including a mix of shellfish, nuts, legumes, whole grains, vegetables, and small amounts of dark chocolate can help you meet copper needs without relying on supplements.
Sources: Harvard T.H. Chan School of Public Health, National Institutes of Health Office of Dietary Supplements, Healthline.
