Which Victorian invention improved peoples health?

One significant Victorian invention that improved people's health was the antiseptic surgical method developed by Joseph Lister. By introducing carbolic acid as a sterilizing agent, Lister dramatically reduced infections during and after surgery. This advancement not only saved countless lives but also laid the groundwork for modern surgical practices and improved overall public health during the Victorian era. Additionally, the development of sewer systems and clean water supply systems during this time also played a crucial role in enhancing sanitation and reducing disease.