Researchers say the experimental tool has huge implications for public health, especially in conjunction with Alzheimer’s drugs that are most effective in the disease’s early stages A healthy volunteer takes the Fastball test in his home alongside lead researcher George Stothart. University of Bath In 2021, 57 million people across the planet were living with dementia. This class of memory-related diseases is the world’s seventh greatest killer, and Alzheimer’s disease is its most common form. T...