Sleep and cognition
Not yet reviewed by a human. 2 papers are in the library.
Graded Strong · Prospective cohort of 53,448 UK adults aged 60 and over followed about 8 years, with results confirmed in a second cohort of 3,965 followed roughly 11 years.
Papers 2
- Your Sleep Tracker May Spot Dementia Risk Years Before Symptoms AppearStrongn = 57,0002026JAMA neurologyResearchers tracked older adults' sleep and movement patterns using wrist accelerometers, then watched who developed dementia. Less daytime activity and disrupted sleep both predicted higher dementia risk years later. Adding these movement patterns to standard risk models boosted prediction as much as testing for the APOE gene, a known dementia risk factor.
- Why Losing Muscle With Age May Make Bad Sleep Worse for Your BrainPreliminary2026Neuroscience and biobehavioral reviewsThis review connects three things that decline with age: muscle, sleep, and brain health. The author suggests that muscle loss, belly fat, and insulin resistance may make sleep more broken. That fragmented sleep, in turn, may leave the brain more open to Alzheimer's changes. This is a proposed framework, not proven cause and effect.
How this map is computed
A mark's size is the number of papers we hold on that pairing. It is a count, not a weighting by study design or sample size.
The fill shows the strongest grade in the cell. One Strong paper among four Preliminary ones still fills it dark, so open the cell to see the rest.
Grades and verdicts are assigned by a named person, never by counting.
An empty cell is a finding: nobody in our library has run that trial yet.