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Hospital noise, still above the WHO floor

Of the two environmental levers on inpatient sleep, noise control is the better proven and the cheaper, while tunable lighting for the general ward is the one the evidence does not yet support.

By Christian Huser, in The Built Review · 10 Jun 2026 · 12 min read · 25 named sources

What’s inside
  1. Key findings
  2. Hospitals run loud and bright around the clock
  3. Noise is the better proven lever, and it is proven in the ward
  4. Light helps patients with disrupted circadian systems
  5. Air, humidity and temperature point the right way but are too thin to decide on
  6. What the evidence does not yet show
  7. Implications
  8. Methodology

Plus 5 key data points, each with its source.

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