Trending: Long Covid: Think yourself well?

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Long Covid can ruin lives, and scientists are striving to understand the condition and beginning to get some early clues about possible treatments. While there are still more questions than answers, though, many have turned online for help. But could what they find there sometimes do more harm than good? Rachel Schraer goes undercover to investigate the Lightning Process, a controversial treatment programme for Long Covid being promoted online. Reporter: Rachel Schraer Producer: Paul Grant Editor: Flora Carmichael