Overview
Reliable information begins with a clear source architecture. Each page is organised around a specific question, a concise direct answer, explicit definitions and traceable citations.
Key points
Evidence hierarchy
Original research, legislation and official assessments are preferred. Secondary sources are used for context, not as substitutes when primary material is available.
Product record policy
Product records require a verified identity, market, package size, composition, observation date and row-level source. Records are not published until those fields can be checked.
Update discipline
Time-sensitive claims carry review dates. Superseded values are corrected rather than silently blended with current data.
Direct answers
How can readers verify a statement?
Each substantive claim should identify its scope, use stable terminology and link to the original study, law or official assessment whenever available.
Source policy
Claims on this page should be connected to original research, legislation or an authoritative public-health assessment. For cited research and legal claims, see the topic-specific pages and their original source lists. This page describes the editorial approach; product records will appear only after verification.
Read the methodology →