News summary

The aging human brain exhibits reduced hemodynamic and cerebrospinal fluid flow waves during sleep

Source: Nature Aging • Published: 13 Nov 2026, 00:00

Summarized by Masters of Longevity from Nature Aging.

Older adults showed substantially reduced CSF flow and hemodynamic waves during NREM sleep.

The aging human brain exhibits reduced hemodynamic and cerebrospinal fluid flow waves during sleep
Key Takeaways
  • CSF flow during NREM sleep is substantially reduced in older adults.
  • Loss of EEG slow waves during NREM sleep mediates reduced CSF flow.
  • Altered cerebrovascular responses independently contribute to reduced CSF flow.
Read the full article at Nature Aging ↗

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