Just before Christmas 2020, Brit entertainer and ex-Take Thatter Robbie Williams revealed that his love of seafood and fish almost led to a catastrophic decline in his health.

Formerly a vegan, Williams began to reintroduce seafood into his diet, until his wife, American actor and model Ayda Field, urged him to get his mercury levels tested, which revealed that the 46-year-old hitmaker had dangerously elevated levels of mercury and arsenic in his bloodstream. In fact, Robbie was told that he presented with the highest mercury poisoning his doctor had ever seen.

It’s the kind of story that strikes fear into the heart of seafood lovers everywhere. We’re told that fish is – nutritionally at least – a healthy …