1 View comments My 41-year-old son has been diagnosed with haemochromatosis, excess iron in the blood. The treatment is for him to have half-a-litre of blood removed every week for a year. I am very concerned — can he replace this blood so quickly?And should he not have some kind of supplement to his diet to help his body deal with this? Robert Robson, by email. Three-quarters of people with haemochromatosis will have weakness and lethargy, and there may also be liver damage and pigmentation of the skin This treatment does sound alarming, but pleased be assured — your son has been correctly advised and is being properly treated. His condition, haemochromatosis, is a genetic disorder that causes the intestine to absorb excessive amounts of iron from food during digestion. Iron is an essential component of the blood, and is responsible for transporting oxygen around the body as part of the compound haemoglobin. However, in excessive amounts it can be harmful.