Vegan
Excludes all animal products. B12 supplementation is required; iron, zinc, omega-3 and iodine warrant attention.
Food & fasting
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Publication suitability · 2026-10-15: Historical reference only; not a clinical verification.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.
Vegan
Excludes all animal products. B12 supplementation is required; iron, zinc, omega-3 and iodine warrant attention.
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.
A scoping review of 70 studies found vitamin B12 deficiency is common in people eating vegan diets, because B12 comes almost entirely from animal foods. Supplements or fortified foods are the way deficiency is prevented and treated in this literature. The review notes gaps: no randomised trials comparing different B12 forms or amounts in vegetarians. A related paper sets out supplementation guidance for vegan complementary feeding. These are reviews and guidance, not trials.
Benefits reported in the imported source
- The linked material covers vitamin B12 supply only and reports no health benefit of the diet itself.
Risks and limits
- Vitamin B12 deficiency is common on vegan diets, as B12 comes almost entirely from animal foods.
- No randomised trials compare different B12 forms or amounts in vegetarians.
- The sources are reviews and guidance, not trials.
Source bottom line: The evidence here is about vitamin B12 deficiency on vegan diets and how supplements address it, not the diet's benefits.
Uncertainty: Reference information only. Not medical advice.
Study protocols — reports, not instructions
vegetarians and vegans with mild vitamin B12 deficiency, in one trial described by the review
- Reported regimen
- oral vitamin B12 at 50 µg daily compared with 2000 µg once a week
- Duration
- not stated
- Reported outcome
- The review reports no differences between the daily and weekly dosing groups.
- Source
- Exploring Vitamin B12 Supplementation in the Vegan Population: A Scoping Review of the Evidence (availability check 2026-10-15: possible access barrier; not independently inspected; HTTP 200)
Claim provenance
evidence.json#/catalog:food-protocol:vegan/protocols/0
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.
Unverified imported account — Definition of Veganism - The Vegan Society
An imported authored paraphrase, not a quotation or a recommended protocol.
Review: unverified historical account. The imported wording is preserved for attribution; its full clinical, dosing, efficacy or consensus claims have not been independently established. Described practice context only; no clinical benefit or safety outcome is inferred.
Imported wording: The Vegan Society describes vegan eating as excluding animal-derived foods, including meat, fish, dairy, eggs and honey.
Historical research outcome: verified-description · 2026-10-06
An attributed practice description was verified without importing the source's benefit claims, recommendations or assumptions about prevalence.
- https://www.vegansociety.com/go-vegan/definition-veganism: verified-description — Independently read the live source and checked this limited, attributed description: The Vegan Society describes vegan eating as excluding animal-derived foods, including meat, fish, dairy, eggs and honey.
Pharmacokinetic context
No half-life recorded in this source snapshot. No value has been inferred.
Source references
- Exploring Vitamin B12 Supplementation in the Vegan Population: A Scoping Review of the Evidence (availability check 2026-10-15: possible access barrier; not independently inspected; HTTP 200)
- Toward Supplementation Guidelines for Vegan Complementary Feeding (availability check 2026-10-15: source not retrieved; HTTP 403)
- Knowledge, Attitudes and Application of Critical Nutrient Supplementation in Vegan Diets among Healthcare Professionals
- NIH ODS: Vitamin B12 (availability check 2026-10-15: source not retrieved; HTTP 403)
Snapshot provenance
Source ID: catalog:food-protocol:vegan. Commit: adc7684614f9439b41d91a3312b62e7982c7e20e. Review state: historical-not-reverified. Authored links are retained separately from the canonical evidence links in the public data. App templates/defaults and rejected drafts are archived, not deployed.
Related entries and components
None listed.