Liver disease is often described as silent because the organ has considerable functional reserve and can sustain substantial damage before symptoms appear. By the time jaundice, swelling or fatigue become obvious, scarring may already be advanced and much of it irreversible. A cheap, routine blood marker that turns abnormal early is therefore disproportionately valuable at population scale: it converts a disease usually caught late into one that can be caught while intervention still changes the outcome. This matters particularly given the rising burden of fatty liver disease associated with obesity and diabetes, alongside the older causes of viral hepatitis and alcohol.