Scientists from the Weizmann Institute of Science in Israel are closer than ever to developing an anti-ageing vaccine that could combat age-related mental decline, including dementia. The researchers explained that as people age, their immune system goes awry, leading to increased inflammation and the accumulation of 'zombie' cells in the body. These senescent cells, which no longer function properly, can cause damage to the brain and contribute to dementia-like symptoms. The scientists are seeking to identify a specific protein that could trigger an immune response in the brain and serve as an anti-ageing vaccination. They also highlighted the potential of using senolytics, drugs that target zombie cells, as another promising approach.