A guideline says something specific
The one supplement on this page where a genotype changes what a doctor would say — and it changes it towards caution, not towards a purchase.
Solid lines are connections this site curates. Dashed lines mean the two ends share a research paper — worth knowing, and not a claim that one explains the other.
HFE C282Y homozygotes absorb more iron than they can use, and the excess accumulates in the liver, heart and pancreas over decades. Hereditary haemochromatosis is treated by removing iron.
So an iron supplement is the wrong direction for this group, and iron is in a great many multivitamins bought by people who never checked. This is the rare case where a common genotype and an over-the-counter product point opposite ways.
It is also not a reason to avoid iron on your own reading of a raw file. Iron deficiency is common and is diagnosed from blood tests, not from a genotype; anyone with a C282Y result should take it to a doctor rather than act on it.
Databases, guidelines and references
Iron is a mineral the body needs to make hemoglobin, the protein in red blood cells that carries oxygen. Genotype here affects how the body absorbs and stores it, in ways that can matter for safety.
No. Iron deficiency is diagnosed from blood tests, not from a genotype — anyone with symptoms should be measured directly.
Hereditary haemochromatosis risk — a condition of iron overload, where the direction is the opposite of a supplement: too much iron accumulates in the liver, heart and pancreas.
No screening guideline recommends it for the general population. A C282Y result belongs in front of a doctor, not used to self-manage.
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Iron. MyGeneLog™. https://www.mygenelog.com/supplements/iron
Nothing on this page recommends taking anything. If a result here matters to you, take it to a doctor or a pharmacist rather than to a shop.