Huntington's disease has been successfully treated for the first time, with a new gene therapy slowing the disease's progression by 75% in patients, allowing for significantly improved quality of life. This breakthrough, achieved through advanced neurosurgery and genetic medicine, offers hope for those affected by the disease and opens the door to future preventive treatments. The therapy is expected to be expensive, but it has the potential to transform the outlook for Huntington's patients and their families.