# Wheat flour iron fortification

**Intervention ID:** `int_iron_fortification`  
**Evidence strength:** moderate  
**Causes:** `cause_nutrition`

## Mechanism

Fortify staple flour with iron/folic acid/B12.

## Organizations in this catalog

- `org_fortify_health`
- `org_evidence_action_ifa`
- `org_iodine_global_network`
- `org_evidence_action`

## Citations (public evaluator pages)

- https://www.happierlivesinstitute.org/charities/
- https://www.givewell.org/research/incubation-grants/Fortify-Health-expansion-December-2021

## Evidence notes

HLI lists Fortify Health ~2.9× GiveDirectly on charities comparison table; GiveWell incubation grant history exists.

## Key uncertainties

- HLI comparison table figure; depth of Fortify Health WELLBY analysis less than Top Charities.
- GiveWell incubation ≠ current Top Charity designation.

## Cost-effectiveness notes (do not treat as verified without citation_urls)

HLI lists Fortify Health ~2.9x GiveDirectly.

Agents must look up `data/claims_index.json` and cite `citation_urls` before stating numbers.

## Provenance

See `docs/evaluation-provenance.md` and `data/graph/evaluations_graph.json`.

_last_reviewed: 2026-10-01_