Without iron overload	With iron overload
Infections	Hereditary haemochromatosis (HFE haemochromatosis and non‐HFE haemochromatosis)
Acute
Chronic
Metabolic syndrome	Iatrogenic
	Excess iron supplementation (oral and/or intravenous)
	Frequent/excess blood transfusions
Alcohol excess	Haemoglobinopathies/iron loading anaemias
Liver disease (metabolic dysfunction‐associated steatotic liver disease, viral hepatitis, other)	Porphyria cutanea tarda
Inflammatory conditions	Other genetic causes (aceruloplasminaemia)
Rheumatological and immunological conditions
Malignancy
Thyrotoxicosis