The future of brain health, explained.
The latest research on aging, anesthesia, sleep, prevention and brain monitoring, translated into plain English and linked to the source. Updated every week.
7.4 million Americans 65 and older are living with Alzheimer's in 2026. About 45% of dementia cases could be prevented or delayed. Delirium after surgery was the strongest predictor of later cognitive decline in a 2026 study.
The weekly signal · Updated Nov 5, 2026
This week in brain health.
The newest research, approvals and data, each summarized in plain English with a link to the source.
Deep-sleep brain waves that travel less far are tied to tau and next-day memory
EEG headband tool to help screen for delirium launches in US hospitals
Aspirin linked to lower dementia rates in one genetic group, with more bleeding
National effort aims to bring brain health and dementia care into primary care
Five questions. One extraordinary organ.
There is more to brain health than memory.
Explore the forces shaping the brain across a lifetime, in the operating room, and in a world increasingly shaped by technology.
Your brain today
What changes with age, sleep, stress and time.
Going under
What anesthesia does to consciousness and the brain.
Brain monitoring
How clinicians read brain activity, and what comes next.
Brain and AI
Attention, memory and the future of neural data.
Keeping it intact
Evidence-based ways to protect brain health over time.