Family members remember some of the early signs of Alzheimer’s in their loved ones quite well. This type of dementia often begins with struggles in communication, lapses in memory, and confusion around everyday problem-solving.
But scientists are now uncovering evidence of another early signal — mood disorders, like depression and bipolar disorder, that begin later in life. While a link between these conditions and Alzheimer’s has long been suspected, what’s been missing is a clear understanding of how the two connect in the brain.
That’s starting to change. A research team from Japan’s National Institutes for Quantum Science and Technology (QST) recently found significant amounts of tau protein — a hallmark of Alzheimer’s — in the brains of people with late-life mood disorders (LLMDs). Their study, published in Alzheimer's & Dementia: The Journal of the Alzheimer's Association, suggests that these psychiatric symptoms might serve as a warning sign for neurodegenerative ...
