Zinc

Research records

Historical source snapshot. Not freshly verified, not a recommendation. Study findings, community accounts and app defaults are not interchangeable.

Publication suitability · 2026-10-15: Historical reference only; not a clinical verification. Clinical, regulatory, efficacy, safety and dose claims are not independently established by this review.

Zinc

Essential mineral. Long-term high doses induce copper deficiency.

Evidence category: Reference only. This describes the source category, not approval or certainty.

Regulatory statement in source: Not separately recorded; do not infer approval from the evidence category.

Zinc is an essential trace mineral involved in hundreds of enzyme reactions. A review of zinc toxicity explains that excess intake can cause anaemia, low white cell counts and copper deficiency, and compares the upper limits set by EFSA and the FDA. It notes that non-oral exposure, such as inhalation, can also cause harm. The NIH Office of Dietary Supplements fact sheet is a general professional reference on zinc. Both sources are reference material rather than trials.

Benefits reported in the imported source

• An essential trace mineral involved in hundreds of enzyme reactions.

Risks and limits

• Excess intake can cause anaemia, low white cell counts and copper deficiency.
• EFSA and the FDA set different upper limits; non-oral exposure such as inhalation can also harm.
• Both sources are reference material rather than trials.
• The linked sources are general reference material and report no trial of supplement benefit.

Source bottom line: Zinc is essential for enzyme function, and the linked sources mainly describe the harms of excess intake.

Uncertainty: Reference information only. Not medical advice.

Study protocols — reports, not instructions

No study protocol recorded in this snapshot. This does not establish that no study exists.

Community and practice descriptions

Accounts of a practice are not evidence of safety or effectiveness. Words such as “standard”, “safe” or “recommended” describe the source account, not verified consensus or this wiki’s advice. Commercial and self-published citations are retained for traceability, not vendor endorsement or independent clinical corroboration.

Pharmacokinetic context

No half-life recorded in this source snapshot. No value has been inferred.

Source references

• Zinc Toxicity: Understanding the Limits (availability check 2026-10-15: possible access barrier; not independently inspected; HTTP 200)
• Office of Dietary Supplements - Zinc Health Professional Fact Sheet (availability check 2026-10-15: source not retrieved; HTTP 403)
• NIH ODS: Zinc (availability check 2026-10-15: source not retrieved; HTTP 403)