It now seems that people do have a genetic disposition towards chronic fatigue syndrome & ME... not caused by but can 'tip the balance' towards experiencing CFS/ME.
Whether this new research will help sufferers avoid both disbelief & medical neglect, and allow CFS/ME to be taken more seriously & recognised more easily.
And then we might also wonder whether there are any links with Long Covid?
https://www.theguardian.com/society/2025/aug/06/genes-me-chronic-fatigue-syndrome