Rebecca Adlington revealed she has been been diagnosed with a life-changing condition in an emotional update on social media.BBC Sports presenter Adlington, 36, who shot to fame as an Olympic swimmer, made a plea to UK Government in a short clip explaining she has coeliac disease.In the video shared to Coeliac UK’s Instagram account, she said: “Hello everyone.As someone newly diagnosed with coeliac disease, I have definitely quickly learnt how vital gluten-free prescriptions are for managing this condition.