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Tier-CPublic-ready6/26/2026

Copper

Glucose and metabolic health markers is closer to a research marker, so it should be read separately from a directly felt benefit.

Human evidence exists, but it is mostly in patient or disease contexts, so the score is handled conservatively.

Representative tier calculated from paper evidence that passed the collection audit.

Papers analyzed
51
Caution signal
Low
Representative score
52.8
Glucose and metabolic health markersMenstrual and women's healthBone, joint, and mobility

Main benefit evidence

The representative ingredient tier is calculated from these target-level evidence groups.

Glucose and metabolic health
3 studiesTier-B
Glucose and metabolic health markers
Fairly consistent positive signal in studiesResearch marker focusPatient-group study

This card is closer to a measured biomarker or lab outcome than a directly felt user benefit. These findings come from a defined study population, so everyday effects may differ.

Evidence score
52.0
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Women's health
1 studiesTier-C
Menstrual and women's health
Some positive signal observedFelt benefit focusPatient-group study

Potential benefit studied in Women's health. These findings come from a defined study population, so everyday effects may differ.

Evidence score
44.0
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Bone and joint health
1 studiesTier-C
Bone, joint, and mobility
Some positive signal observedFelt benefit focusPatient-group study

Potential benefit studied in Bone and joint health. These findings come from a defined study population, so everyday effects may differ.

Evidence score
42.1
Study context
Patient-group study

This score reflects the strength of this benefit group. The ingredient tier also considers paper count, repetition, population, and study context.

Recent research

Updated This Month10 new papers

Key cautions to review

Standalone side-effect signals and combination cautions are listed separately.

Caution index
0.8
Caution band: Low
Caution signals
2
Side effects + combos + curated rules
Key precautions
No curated contraindication rule is available yet, but literature caution signals are shown below.
Standalone side effects, combination cautions, and positive combos are separated below.

Standalone side effects

Regulated cell death (apoptosis, paraptosis, pyroptosis, ferroptosis, cuproptosis)1 papers
At high concentrations, copper ions exhibit increased toxicity by inducing various forms of regulated cell death.human · systematic-review
acute or chronic toxicity1 papers
The review concludes that an oral reference dose of 0.04 mg Cu/kg/day is protective against acute or chronic toxicity in adults and children, while noting that high soluble copper intake can cause gastrointestinal symptoms and liver toxicity in susceptible individuals.human · systematic-review

Evidence summaries

Paper IDs and full lists are private. Only study types and summaries are shown.

Key Evidence #1
Public scholarly dataCitation signal: 665
review

Results from observation and intervention studies do not support a link between Cu and a risk of cardiovascular disease, cognitive decline, arthritis or cancer for intakes ranging from 0.6 to 3mg/day, and limited evidence exists for impaired immune function in

Key Evidence #2
Public scholarly dataCitation signal: 599
observational

The progress made in understanding copper metabolic processes and their impact on the regulation of cell death and autophagy are reviewed to help in the design of future clinical tools to improve cancer diagnosis and treatment.

Key Evidence #3
Public scholarly dataCitation signal: 417
observational

Limits in the existing United States and international guidance for determining an oral reference dose for essential metals like copper were identified and an alternative method using categorical regression analysis to develop an optimal dose was reviewed for

3 more summariesLimited representative sample by study type.
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Public scholarly dataCitation signal: 288
review

Much remains to be discovered in particular, how to regulate copper homeostasis to prevent neurodegeneration, when to chelate copper, and when to supplement it.

Public scholarly dataCitation signal: 285
observational

Small, frameless, flexible, and unidimensional copper IUDs appear to be well tolerated, with less impact on menstrual bleeding, resulting in low discontinuation rates when compared with standard-size conventional IUDs, which often result in increased expulsion

Public scholarly dataCitation signal: 227
observational

This collection of Cu-binding proteins, with RNA expression patterns in different cancers, will serve as an excellent resource for mechanistic-molecular studies ofCu-dependent processes in cancer.

Copper
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