多年来,胆红素一直被认为是体内衰老红细胞的代谢产物,是一种需要排出体外的废物,并作为肝胆及某些血液系统疾病的诊断指标在临床广泛应用。然而近年来的研究发现胆红素是体内正常存在的物质,它含有一个延伸共轭双键体系和活化氢原子,能清除自由基,因而是机体内源性抗氧化系统? Over the years, bilirubin has long been considered as a metabolite of aging red blood cells and is a waste that needs to be excreted. It has been widely used clinically as a diagnostic indicator of hepatobiliary diseases and certain hematological diseases. However, recent studies have found that bilirubin is a normal substance in the body, which contains an extended conjugated double bond system and activated hydrogen atoms, which can scavenge free radicals and thus is the body’s endogenous antioxidant system.