Vibrating mattress helps clear Alzheimer's protein from the brain

A study tested whether combining gentle whole-body vibration with nitric oxide could strengthen the brain’s glymphatic system, which carries waste fluid away from brain tissue. The approach builds on evidence that vibration activates Piezo1 proteins in blood-vessel walls, while nitric oxide widens vessels; together, these effects may help move fluid through channels surrounding them. Twenty-nine adults without cognitive problems took a nitric-oxide-releasing pill, lay on a vibrating mattress for 40 minutes, and took another pill halfway through. Their blood levels of beta-amyloid 42, a protein associated with Alzheimer’s, rose by an average of 35 per cent. Brain scans also indicated increased fluid movement, and vibration or pills used alone appeared to have less than half the combined effect.

The results show an immediate change, not that the treatment prevents Alzheimer’s or improves memory. A rise in blood beta-amyloid could indicate that more protein had left the brain, but it might also result from slower breakdown by the liver; directly tracking fluid flow would help distinguish these explanations. Six participants reported mild effects such as nausea or headache, and the study had no placebo comparison. Nitric oxide can lower blood pressure enough to cause fainting, so the treatment should not be tried at home. The researchers plan to test the combination in 60 people with mild cognitive impairment or Alzheimer’s disease, followed - if results warrant it - by a longer trial measuring cognitive changes.