How much copper is in walnuts?

Copper content of walnuts and how it fits a low-copper diet for Wilson disease（核桃）.

1.59 mgcopper per 100 g

Avoid

High copper — kept off a low-copper diet · food group: Nuts & seeds

High-copper nut; kept off a low-copper diet.

Can I eat walnuts with Wilson disease?

People with Wilson disease follow a low-copper diet, especially in the first year of treatment, because the body cannot clear excess copper normally. At 1.59 mg per 100 g, walnuts is a high-copper food that is normally kept off the plate. How strict your diet needs to be depends on your treatment stage and copper levels, so use this as a guide and confirm with your own clinician or dietitian.

Lower-copper choices in the same group

Cashews
2.22 mg · Avoid Sunflower seeds
1.8 mg · Avoid Pistachios
1.29 mg · Avoid Flaxseed
1.22 mg · Avoid

See the full food copper list → · Search any of 13,590 foods →

USDA FoodData Central (SR Legacy / Foundation), copper per 100 g edible portion. Category reflects the classic low-copper-diet guidance for Wilson disease. Numbers are factual USDA values; they are not a personal dietary prescription. Always follow the plan agreed with your own clinician or dietitian.