I'm 18, 5 ft 9.5 and a size 6/8, in my final year of school and am worried I might have an eating disorder but not sure. I am a keen runner and represent my school, which lead to me losing weight. I liked it and found that if I limited food intake to 1000 cals a day and ran every other day then I lost weight quite rapidly. Since then i have become more and more restrictive with food, trying to eat less and less each week. I was diagnosed with gluten intolerance which makes it easier to explain to others why I eat low calorie foods and so allowed me to eat even less. Exams and schoolwork combined with some problems at home meant that I liked losing weight as it was the only thing i could control, and when other things went wrong I would think "oh well at least I have lost a few pounds". I constantly think about food, reading recipe books and food blogs, it has become quite an obsession. Occaisionally i have binges where I eat until I feel extremely sick and full and then I hate myself and usually eat only protein and veg for the next few weeks after. I also have started doing juice cleanses as it is the only time I dont feel guilty when I eat. i've noticed it has started to affect my running, I cant run as far or as fast as i used to. Also, I feel very sad all the time and have no energy, I can't be bothered to socialise as much anymore and I have lost interest in my schoolwork. I am really worried as it seems like everything in my life is going downhill.