I ought to begin with an explanation of what is a very long word. Put simply, haemochromatosis is too much iron in the blood—haemo, blood; chroma, iron; and tosis, too much of it... Untreated haemochromatosis can lead to several common conditions that we might describe as Scottish diseases of ill health: cirrhosis of the liver, heart disease, arthritis and so on. Once spotted, HCT is easily treated by venesection—another long word—which simply means bloodletting. About 450 ml of blood is taken off the patient at each session to chase down the iron levels in the body to normal levels... I have a bit of knowledge of the bloodletting side of the business, because for the past 17 years, I have been attending the Knutsford ward at the Royal London hospital on a regular basis for venesection. I am grateful to the staff there for the incredible treatment they have given me, including consultants such as Richard Marley... A groundbreaking DNA study headed by Professor Jim Flett Wilson of Edinburgh University discovered that the Western Isles are a hotspot for haemochromatosis, this genetic mutation that the body at some stage adopted for survival... The numbers in the Western Isles are sufficiently high to justify population-wide screening. For instance, one in 212 people in the south and east of England carry two copies of the faulty gene, as opposed to one in 62 in the Outer Hebrides... I think that everyone in the Western Isles, or Na h-Eileanan an Iar, should be screened for too much iron in their blood, but I think they should also be offered DNA tests across the board to show what other inherited conditions they might have. Initially at least, the Bill ought not to go to the national health service. The bill for gene testing in the Western Isles should be part of the community payback for the large-scale wind farm developments that are planned for the islands... The Viking genes results are not limited to haemochromatosis; they also showed high levels of hypercholesterolaemia in the Western Isles.