A new blood test might spot women at risk of getting dementia up to 25 years before any signs appear, according to a major study. This could change how doctors spot and handle the illness early on. The test looks for higher levels of a protein called p-tau217 in the blood, which is linked to brain changes in Alzheimer's disease, the most common type of dementia... (Audio Available – 845 words – 4 minute read time)