The Science Your GP Doesn't Have a Prescription For
PM2.5 particles — produced by traffic exhaust, ULEZ emissions, and urban combustion — are smaller than 2.5 micrometres in diameter. They pass through the lungs directly into the bloodstream. The ultrafine fraction crosses the blood-brain barrier.
Once there, they trigger what sleep researchers call micro-arousals: 2–5 second activations of the brain's alerting system that occur hundreds of times per night without the sleeper becoming conscious. No memory of waking. Just the accumulated damage of a brain that never reached deep, restorative slow-wave sleep.
Three Engineering Decisions That Make NeuroPure Sleep Different
Everything You Need to Know Before You Order
My GP has never mentioned PM2.5 micro-arousals. Is this real?
My GP has never mentioned PM2.5 micro-arousals. Is this real?
Yes. The relationship between PM2.5 exposure and sleep architecture disruption is documented in peer-reviewed literature, including a study published in 2025. GPs are not trained in environmental medicine — there is no NHS referral pathway for bedroom air quality assessment. This is a structural gap in the system, not a reflection of whether the mechanism is real.
How noisy is it at night?
How noisy is it at night?
Below 20 decibels in sleep mode — the level of a quiet library. The motor was specified by an acoustic engineer to maintain this output over years of continuous operation. The No-Whistle Guarantee is not a marketing phrase. It is the outcome of specifying a motor whose degradation characteristics were calculated before manufacture.
Do I need to run it 24/7?
Do I need to run it 24/7?
You don't have to, but it costs £0.56 per month to do so at current Ofgem rates. The meaningful protection occurs during the 7–8 hours you are breathing slowly and deeply in a closed room. Most customers run it continuously for this reason.
Is this safe to use around children and pets?
Is this safe to use around children and pets?
Yes. NeuroPure Sleep uses mechanical filtration only — no ozone generation, no UV-C, no ionisation, no chemical emissions. The H14 filter grade is used in neonatal units and paediatric wards in NHS hospitals.