Incidence of type 2 diabetes: molecular mechanisms & dependencies

How nutrients influence it

Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.

Human evidence only

How nutrients reach it in more than one step

Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.

Tracing routes…

What it does

Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.

Recorded relationships

What acts on it

Diabetes developed in 293 D3 recipients and 323 placebo recipients; HR0.88 (95% CI0.75–1.04; P=0.12).
Cholecalciferol → Incidence of type 2 diabetes source_derived_draftungraded
Experimental context and source evidence
cross_nutrient
false
experimental_model
D2 d randomized trial; 2423 adults with prediabetes; median 2.5 years
exposure
D3 4000 IU/day versus placebo; participants met≥ 2 of 3 prediabetes criteria.
limitations
Individual-trial estimate is compatible with modest benefit and no effect; not a claim that pooled prevention evidence is negative.
nutrient_topic
Vitamin D2 and D3 research collection; topical membership is not evidence of a direct dietary effect. · Vitamin D2 and D3
organism
Homo sapiens
plain_language
This individual D3 trial did not meet statistical significance for preventing diabetes.
primary_references
[pittas2019] Vitamin D Supplementation and Prevention of Type 2 Diabetes. (2019). https://pubmed.ncbi.nlm.nih.gov/31173679/ DOI: 10.1056/nejmoa1900906
tissue_or_cell_type
Clinical glucose outcomes
Vitamin D2 and D3: mechanisms, deficiency and nutrient interactions (2026-09-17) · lines 1639–1650
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · D2 d randomized trial; 2423 adults with prediabetes; median 2.5 years · source_derived_draft · unverified_draft
### vd-d2d-diabetes Diabetes developed in 293 D3 recipients and 323 placebo recipients; HR0.88 (95% CI0.75–1.04; P=0.12). Condition category: normal nutrient_topic: Vitamin D2 and D3 research collection; topical membership is not evidence of a direct dietary effect. plain_language: This individual D3 trial did not meet statistical significance for preventing diabetes. organism: Homo sapiens tissue_or_cell_type: Clinical glucose outcomes experimental_model: D2 d randomized trial; 2423 adults with prediabetes; median 2.5 years limitations: Individual-trial estimate is compatible with modest benefit and no effect; not a claim that pooled prevention evidence is negative. exposure: D3 4000 IU/day versus placebo; participants met≥ 2 of 3 prediabetes criteria. cross_nutrient: false [pittas2019] Vitamin D Supplementation and Prevention of Type 2 Diabetes. (2019). https://pubmed.ncbi.nlm.nih.gov/31173679/ DOI: 10.1056/nejmoa1900906
Complete structured claim and evidence
Across approximately 150,000 people, carriers of 12 rare SLC30A8 truncating variants had 65% lower type 2 diabetes risk.
Human SLC30A8 protein-truncating variant carrier state → Incidence of type 2 diabetes source_derived_draftungraded
Experimental context and source evidence
availability_state
machinery_impairment Imported condition classification; unverified.
curation_topic
zinc · Zinc
experimental_condition
Noncarrier Truncating-variant carrier · Human SLC30A8 protein-truncating variant carrier state Condition belongs to the full experimental contrast; do not separate a joint intervention.
experimental_contrast
{"intervention": "Truncating-variant carrier", "comparator": "Noncarrier", "endpoint": "T2D risk", "effect_direction": "decrease", "combination": "single", "conditions": [{"entity_slug": "human-slc30a8-truncating-genotype", "state": "Truncating-variant carrier"}]} Explicit extracted experimental comparison; source-derived draft.
experimental_model
Human genetic association across five ancestry groups
limitations
Publisher abstract reviewed; genetic transporter loss is not dietary zinc restriction or a demonstrated supplement effect.
primary_references
Flannick et al. 2014; DOI:10.1038/ng.2915; PMCID:PMC4051628; https://www.nature.com/articles/ng.2915
trigger_kind
machinery_impairment Imported condition classification; unverified.
Diabetes cascade: targeted primary-source supplement · lines 6–6
See claim-local references; curated paraphrases reviewed 2026-09-20. · supports · Human genetic association across five ancestry groups · source_derived_draft · unverified_draft
Across approximately 150,000 people, carriers of 12 rare SLC30A8 truncating variants had 65% lower type 2 diabetes risk. Model: Human genetic association across five ancestry groups. Limits: Publisher abstract reviewed; genetic transporter loss is not dietary zinc restriction or a demonstrated supplement effect. Primary reference: Flannick et al. 2014; DOI:10.1038/ng.2915; PMCID:PMC4051628; https://www.nature.com/articles/ng.2915
Complete structured claim and evidence

The events it takes part in

A mechanism often involves more than two components. These are the full events, with every participant and its role.

Situations it appears in

Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.

In the sources

Preserved passages that mention this component, quoted exactly. Open one to read it in context.

Open hypotheses

Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.

This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.

Incidence of type 2 diabetes