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Technology · The Guardian TechnologyWed, 18 Feb 2026 07:00:02 GMT

Hazardous substances found in all headphones tested by ToxFREE project

Substances include chemicals that can cause cancer, neurodevelopmental problems and the feminisation of males You wear them at work, you wear them at play, you wear them to relax. You may even get sweaty in them at the gym.

But an investigation into headphones has found every single pair tested contained substances hazardous to human health, including chemicals that can cause cancer, neurodevelopmental problems and the feminisation of males. Continue reading...

Substances include chemicals that can cause cancer, neurodevelopmental problems and the feminisation of males You wear them at work, you wear them at play, you wear them to relax. You may even get sweaty in them at the gym.

But an investigation into headphones has found every single pair tested contained substances hazardous to human health, including chemicals that can cause cancer, neurodevelopmental problems and the feminisation of males. Continue reading...