Doctor Who star said she was phoned by her publicist who informed her an eyewitness had seen her "foaming at the mouth".Writing in Elle UK, Billie said: "My 'dramatic turn' – as I liked to call it – was a result of days of Diet Cokes and Marlboro Lights fuelling a very active eating disorder, cystitis that crept up my back and into my kidneys, a goblet of sweet white wine and a mind and body dissociation that I feared for the very first time."Following that sojourn in hospital, my mother dragged me to a local therapist."I took immediate offence when the therapist asked me if my not eating was because I wanted to be a boy.
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