Longevity by Design · Pillar · AHR
Acoustic Health Rating
Published: June 2026 · Updated: August 2026
The Acoustic Health Rating is the fourth pillar of Longevity by Design. It keeps continuous indoor sound exposure below 55 dB. The benchmark follows the WHO Europe 2018 Environmental Noise Guidelines. Those guidelines set 53 dB Lden for road traffic and 45 dB at night. Delivery relies on acoustic treatment, room geometry and careful HVAC specification. Noise is treated as a physiological stressor, not a comfort preference.
The cardiovascular evidence is documented. WHO's 2018 review links road-traffic noise to ischaemic heart disease. Risk rises roughly 8% per 10 dB of long-term exposure. Chronic noise elevates stress hormones and fragments sleep architecture. This happens even when the sleeper never consciously wakes. The health effects of noise span decades of research. Designing below the 55 dB line removes a constant, invisible load.
Frequently asked
What is the Acoustic Health Rating?
It is the acoustic pillar of the Longevity by Design methodology. The specification keeps continuous indoor sound below 55 dB. It follows the WHO Europe 2018 Environmental Noise Guidelines (53 dB Lden road traffic, 45 dB night).
Can noise really affect lifespan?
Yes. A 2018 WHO evidence review links road-traffic noise to ischaemic heart disease. Risk rises roughly 8% per 10 dB of long-term exposure. Keeping rooms below 55 dB removes that constant physiological load.