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Study: Infrasound likely a key factor in alleged hauntings

Low-frequency infrasound (below 20 Hz) can raise cortisol levels in saliva and increase irritability...

HEALTH NEWS April 27, 2026

Study: Infrasound likely a key factor in alleged hauntings

Low-frequency infrasound (below 20 Hz) can raise cortisol levels in saliva and increase irritability.

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Low-frequency infrasound (below 20 Hz) can raise cortisol levels in saliva and increase irritability.

Author: Ars Technica

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