Tag
Brain health
Page 8 of 15
Short and long sleep both tracked with Alzheimer changes
Using brain scans from 38,816 UK Biobank participants, researchers found a U-shaped pattern: five to six hours and nine to ten hours both lined up with more Alzheimer-like shrinkage and worse test scores.
Aug 4, 2026
Blood pressure that swings tracked with faster memory loss
Pooling 11,104 participants from two major blood pressure trials, researchers in Alzheimer's & Dementia found that how much systolic pressure moved between visits tracked with cognitive decline, independently of the average.
Aug 3, 2026
Nine measures of sleep, none predicted dementia
Researchers writing in Neurology boiled 44 sleep measurements down to nine composites across five US cohorts, then tested them against 1,134 dementia cases. Two tracked with better thinking scores. None tracked with dementia.
Aug 3, 2026
Thinking your smell has faded tracked depression best
Pooling 187,056 people across 23 studies, researchers in JAMA Otolaryngology found that people who felt their sense of smell had declined were more likely to be depressed, while measured smell loss showed a weaker and less stable link.
Aug 3, 2026