Early Warning Signs of Dementia May Appear Years Before Diagnosis, Study Suggests
Changes in sleep patterns could be an early indicator of Alzheimer’s disease, potentially appearing years before cognitive decline becomes apparent, according to new research. Recognizing these early warning signs is crucial, as dementia currently has no cure, and early detection can improve management and quality of life.
Researchers at the University of Kentucky found that disrupted deep sleep may be one of the first physical changes to occur in neurodegenerative diseases like Alzheimer’s. The study, published in the journal Nature, suggests that sleep and metabolic changes are among the earliest bodily alterations associated with these conditions.
Sleep problems are often attributed to stress or everyday pressures, but chronic sleep deprivation or disturbances in deep sleep can have significant health consequences, including impacts on concentration, performance, and cardiovascular health. The research indicates that these sleep disruptions may not simply be a symptom of the disease, but could potentially contribute to its progression.
According to the study authors, interruptions in sleep, reduced deep sleep, and altered sleep cycles are observed long before any cognitive impairments become noticeable. This finding highlights the importance of paying attention to changes in sleep habits as a potential early warning sign.
In Austria, an estimated 170,000 people currently live with some form of dementia, and that number is projected to rise to around 230,000 by 2050 due to demographic shifts and increasing life expectancy. The Austrian Dementia Strategy, “Good Life with Dementia,” launched in 2015, aims to improve the lives of those affected by dementia and their caregivers, promoting their active participation in society.
The Dementia Report 2025 provides a comprehensive overview of the state of dementia care and support in Austria, serving as a basis for ongoing development and improvement of the dementia strategy. More information about the Austrian Dementia Strategy can be found here.
