Haemochromatosis (hee-mo-kro-mah-tosis) means your body is absorbing too much iron. It can cause fatigue and joint pain and, if left untreated, can lead to cirrhosis of the liver, stroke and diabetes.

Most people will only absorb a small fraction of the iron they consume, but someone with this condition absorbs up to four times more. That builds up over time, leading to illness.