Robert Green, a researcher at Brigham and Women’s Hospital who was not involved in the study, described the work as a form of “time travel” in its ability to connect historical figures to the methods of modern genomics. He also noted, in commenting on the study, that the field would need to develop clearer norms for how this kind of research is conducted and communicated.
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## The Lead, the Liver, and the Life
Setting aside the scientific debates, what emerges from the convergence of the 2023 genomic study and the 2024 lead analysis is a picture of a man whose body was under siege from multiple directions through much of his adult life.
Beethoven began losing his hearing in his mid-twenties. Whatever caused the hearing loss—an infectious illness, a genetic predisposition, physical trauma, or some combination—it progressed relentlessly over more than two decades and left him completely deaf by his late forties. His gastrointestinal complaints began early and persisted throughout his life, causing pain, disruption to his daily routines, and ongoing anxiety about his physical condition. His drinking was heavy, documented by multiple contemporaries, and continued throughout the years of his illness.
His exposure to lead—now confirmed at elevated levels in authenticated hair—may have added to this burden. Lead exposure at the concentrations found in the 2024 study can cause neurological symptoms, gastrointestinal distress, fatigue, and mood disturbances, among other effects. Whether any of Beethoven’s chronic symptoms were attributable in part to lead toxicity, rather than to other causes, cannot be determined from the available evidence, but the possibility is now supported by documented measurement rather than by analysis of a lock that turned out not to be his.