Copper Rich Foods for Vegetarians: Dietary Sources
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Copper is a mineral found in various foods. For those following a vegetarian diet, identifying specific food sources and understanding daily intake requirements is part of managing nutritional intake.
Copper Food Sources
Measurable amounts of copper are found in various nuts, seeds, and legumes. The following list provides copper content for specific foods as reported by the Linus Pauling Institute.
- Cashews: 624 μg Copper per 1 ounce.
- Sunflower seed kernels: 519 μg Copper per 1 ounce.
- Hazelnuts: 496 μg Copper per 1 ounce.
- Almonds: 292 μg Copper per 1 ounce.
- Lentils: 249 μg Copper per ½ cup.
- Peanut butter: 185 μg Copper per 2 tablespoons.
Copper Intake Recommendations
The Recommended Dietary Allowance (RDA) and Adequate Intake (AI) for copper are established based on age and life stage. Requirements are higher during pregnancy and breast-feeding.
| Population Group | Age | Recommended Amount | Standard |
|---|---|---|---|
| Infants (Male and Female) | 0-6 months | 200 μg/day | AI |
| Infants (Male and Female) | 7-12 months | 220 μg/day | AI |
| Children | 1-3 years | 340 μg/day | RDA |
| Children | 4-8 years | 440 μg/day | RDA |
| Children | 9-13 years | 700 μg/day | RDA |
| Adolescents | 14-18 years | 890 μg/day | RDA |
| Adults | 19+ years | 900 μg/day | RDA |
| Pregnancy | All ages | 1,000 μg/day | RDA |
| Breast-feeding | All ages | 1,300 μg/day | RDA |
Source: Linus Pauling Institute
Safety and Tolerable Upper Intake Levels
The US Food and Nutrition Board has established Tolerable Upper Intake Levels (UL) for copper to prevent potential adverse effects from excessive intake from food and supplements combined.
For younger populations, the Tolerable Upper Intake Levels (ULs) are as follows:
- Children 1-3 years: 1,000 μg/day (UL).
- Children 4-8 years: 3,000 μg/day (UL).
- Children 9-13 years: 5,000 μg/day (UL).
- Adolescents 14-18 years: 8,000 μg/day (UL).
These limits apply to the total intake from both dietary sources and nutritional supplements. Data provided by the Linus Pauling Institute.
Key Takeaways
- Food sources such as cashews and sunflower seed kernels provide measurable amounts of copper.
- The RDA for adults aged 19 years and older is 900 μg/day, which increases to 1,300 μg/day during breast-feeding.
- Other sources include hazelnuts, almonds, lentils, and peanut butter.
- The Tolerable Upper Intake Level (UL) for copper in adults is 10,000 μg/day from food and supplements combined.
Final Thoughts
Individuals can find copper in various foods, including nuts like cashews and hazelnuts, as well as legumes like lentils. By noting the copper content in these foods and following the established intake standards for their age group, individuals can manage their dietary copper intake.
Frequently Asked Questions
How much copper is in cashews?
Cashews provide 624 μg of copper per 1-ounce serving.
Source: Linus Pauling Institute
What is the daily copper requirement for adults?
The Recommended Dietary Allowance (RDA) for copper in adults aged 19 years and older is 900 μg/day.
Source: Linus Pauling Institute
How much copper is in lentils?
Lentils contain 249 μg of copper per ½ cup serving.
Source: Linus Pauling Institute
What is the tolerable upper intake level for copper in adults?
The Tolerable Upper Intake Level (UL) for copper for adults aged 19 years and older is 10,000 μg/day from food and supplements combined.
Source: Linus Pauling Institute
Does the copper requirement change during pregnancy?
Yes, the Recommended Dietary Allowance (RDA) for copper during pregnancy for all ages is 1,000 μg/day.
Source: Linus Pauling Institute