Work out iron requirement instantly with clear inputs, formula shown and shareable results.
Applies the group-specific iron reference intake and raises it by 80 percent for plant-based diets, as guidelines advise for lower non-haem absorption.
Iron requirement
Reference intakes: 8 mg men, 18 mg premenopausal women, 27 mg in pregnancy; vegetarian requirements are about 1.8 times higher
Educational estimate only. Not a substitute for professional clinical judgement, and must not be used to make treatment or dosing decisions.
It must be reduced before uptake and is inhibited by phytate, calcium and polyphenols; vitamin C counteracts this.
Yes. The upper limit is 45 mg a day, and unnecessary supplementation is harmful in haemochromatosis.