We will never know what killed Beethoven
The core idea stands, but key numbers or details have changed.
TaughtBeethoven died in 1827 after years of illness, deafness, and abdominal suffering, and the cause was lost to history. Without a body to examine, the best anyone could offer was speculation: lead poisoning, syphilis, a dozen guesses.
NowIn March 2023, researchers sequenced Beethoven's genome from authenticated locks of his hair and reported, in Current Biology, that he carried strong genetic risk factors for liver disease and had been infected with hepatitis B, a combination that, with his drinking, points to liver failure as the likely cause of death.
What actually happened
The team validated which locks were genuinely Beethoven's (one famous sample turned out to belong to a woman) before extracting DNA nearly two centuries old. In his authentic hair they found two copies of a PNPLA3 variant tied to cirrhosis, other liver-risk genes, and hepatitis B viral DNA.
The researchers are careful, and so is this card: they say they cannot prove exactly what killed him, only that he carried significant heritable risk and a hepatitis infection that fit the picture. That honest hedge is why this is 'updated,' not 'solved.' What genuinely changed is that a death written off as unknowable now has a concrete, evidence-based answer, and the DNA also ruled some old theories out.
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Who was taught this
Still standard through 2023, so anyone who finished school between 1950 and 2023 learned the earlier version.