There are three main reasons for Beethoven's deafness. First, Beethoven's parents were in poor health and had congenital factors; second, his usual living habits were not good, staying up late and drinking frequently. Coffee; third, he had a habit of biting pencils when creating, which led to excessive lead intake in the body.

1. Genetic reasons. Beethoven is a famous musician in the world. Many of his songs are still sung. However, he lost his hearing in middle age, but he became a famous musician in the world. The main reason for his deafness is It was due to genetics, because his father was an alcoholic and his mother suffered from tuberculosis and only lived to be 41 years old. Beethoven's mother gave birth to 7 children in one day. Only three children, including Beethoven, survived, and the other four all died in infancy. From this, we can know that this is closely related to heredity.

2. Poor living habits. Although Beethoven was a musician, he did not like his body at all and often stayed up late. Moreover, he often liked drinking coffee, followed by wine and mineral water. Since the wine-making technology at that time was still incomparable with today, manufacturing Many metallic impurities could not be removed during the process, and the wine Beethoven drank was often not high-end wine. Over time, it caused great damage to his ears and also increased the burden on his liver. This is one of the reasons why he lost hearing in his ears.

3. Excessive lead intake. Beethoven liked to bite pencils when he was creating. This habit may be shared by most people today. His habit at the time led to a high level of lead in his body. Lead can affect a person's hearing, but this reason may not be possible. The sex is still relatively small. Lead can affect hearing, but it will not cause deafness.

Beethoven is a world-famous musician. There is no exact reason for his deafness, but this is not important. What is important is his contribution to world music.