The pro-publica report describes how the machines would cause cancer: The polyurethane foam used to muffle the sound degrades over time, including into some sub

The pro-publica report describes how the machines would cause cancer: The polyurethane foam used to muffle the sound degrades over time, including into some substances that are carcinogenic. The CPAP machine then blows those particles into the lungs of patients every night. [1] I don't think the reporting proves that the CPAPs caused cancer, but I do think the preponderance of the evidence is that they did. No one is contesting that the foam degraded, or that it was blown into patient's lungs. People would wake up and regularly find black dust in their masks. The pro-publica report does not specify what substance is carcinogenic, but they mention a test report that sounds like a biocompatibility report which found genotoxicity. So it's likely that test also found carcinogenicity. If the machines were blowing carcinogenic particles into people's lungs, that would cause cancer. [1] https://www.propublica.org/article/philips-kept-warnings-about-dangerous-cpaps-secret-profits-soared https://www.propublica.org/article/philips-kept-warnings-abo...