A top drug expert has warned of a life-threatening complication of weight-loss injections that is little-known among doctors. In October 2024, a Scottish nurse was found to have died after having just two weight-loss injections. Experts agree that GLP-1 injections are, for the vast majority, safe and effective, but they acknowledge that severe side effects can – and will – happen. It is such an effective treatment that experts have taken to calling it the 'King Kong' of weight-loss injections. Be alert for these worrying symptomsThere are a number of symptoms that doctors tell new GLP-1 patients to look out for.