Iron
FeToday
30-day average. Months to years of reserve, so only a sustained trend is meaningful.
What it is
Carries oxygen in blood. The most common deficiency in the world.
Reference intake
Your daily target, personalised to your age and sex.
- RDA
- 8 mgmale_19_plus
- Upper limit
- 45 mgapplies to total
Acute overdose is a leading cause of poisoning death in young children. In adults the concern is chronic accumulation, particularly in undiagnosed haemochromatosis — the body has no route to excrete iron.
Full write-up not finished
The reference intake above is real and cited — Iron is assessed against it exactly like any other nutrient. What is missing is the written panel: what it does in detail, what deficiency and excess look like, absorption, interactions, and food sources ranked against what you eat.
Entries live in data/nutrients.json. Filling this one in changes no code.
Sources
Last reviewed 2026-08-11