The researchers found that intermittent exposure to high carbon dioxide levels caused the brain’s blood vessels to pump as they do during deep sleep, driving the glymphatic system.

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But an around an hour after the intervention ended, the amyloid and tau-clearing benefits had returned to baseline. Further studies need to explore whether this has an impact on Alzheimer’s disease risk or progression in the long-term, and how often you’d need to do it, says Vincent Tay at Changi General Hospital in Singapore.

Further studies need to explore whether this has an impact on Alzheimer’s disease risk or progression in the long-term, and how often you’d need to do it, says Vincent Tay at Changi General Hospital in Singapore.