Encyclopaedia + database · vitamins and minerals

How much you really need — and how we know.

Compare recommendations from a dozen countries and organisations. Every number shows its document, year and link. No trace to a source — no entry in the database.

< 2000mg/d

sodium · adults · upper limit

sourced

Organisation WHO

Document Guideline: Sodium intake for adults and children (2012)

Link www.ncbi.nlm.nih.gov/books/NBK133309/

Three ways to read the same knowledge

Atlas

Comparison database

Filter by nutrient, country and group. A click shows the evidence: document, page, link.

Nutrients

Encyclopaedia entries

What a nutrient does, how much you need and where it occurs — in plain language, with sources.

Method

How to read reference values

EAR, RDA, AI, UL — why there are several values and what „97.5%" means.

Popular nutrients

vitamin Folate foliany / witamina B9 vitamin Vitamin B12 kobalamina vitamin Vitamin C kwas askorbinowy vitamin Vitamin D cholekalcyferol (D3) mineral Iodine I mineral Magnesium Mg mineral Calcium Ca mineral Iron Fe

20sources in the register

186values with a document citation

12countries and organisations

UEclaims verbatim from the OJ

How we verify →

Data and content are prepared and cross-checked against source documents by several independent AI models. They have not been audited by a human editor. What that means in practice →