She’s a campaigner. She counts calories 24/7. Thinking about food takes up more energy than her career. Does Rhiannon Lucy Cosslett have an eating disorder?Here’s a fact I’m uncomfortable admitting: I could tell you, in order, every single food item that I have ingested in the last 72 hours. I could also, with a fair amount of accuracy, tell you how many calories each of those meals contained, and how I felt while eating them. (The Cheesy Wotsits I had on the way to a party the day before yesterday? Guilt. One hundred calories but, hey, I needed something to line my stomach. The lentil and Quorn sausage stew last night? Fine, but I made sure I didn’t have too many bits of sausage. The Marmite on toast