## 3 Materials and Methods
### Material  
The material in this study comprised the written records made by patients with anorexia who were undergoing therapy. We managed to collect the research material thanks to the established cooperation with the specialists from the Clinical Hospital No.1 in Zabrze, Poland, named after Professor [PERSON] of the Medical University of Silesia. Another group of records was the notes written by healthy adolescent girls and young women from primary and secondary schools in Gliwice and Zabrze, Poland. All participants were asked to write a short note (a note of a few sentences) on their attitude to their bodies. The data collection consisted of 115 notes from anorexia patients and 85 from healthy schoolgirls.  
This study utilized specific criteria for selecting the participants for the research and control groups. The criteria and data tagging were determined by experts in anorexia nervosa. For the research group, the inclusion criteria involved adolescent individuals (aged 12-19) diagnosed with anorexia by a psychiatrist, with an absence of concurrent psychological disorders and a duration of the disorder up to 3 years. The control group, on the other hand, included participants within the same age range (12-19) without any diagnosed psychological disorders.  
In the research group, 115 females with the restrictive form of anorexia met the specified criteria of being females with anorexia (the restrictive form) aged 12-19, with an average age of 15.7 \(\pm\) 2. The diagnoses of anorexia used the ICD-10 (International Classification of Diseases, tenth revision) and DSM IV (Diagnostic and Statistical Manual of Mental Disorders, fourth edition) criteria. The girls in the research group had an average weight of 35.1 \(\pm\) 4.7 kg and a BMI (Body Mass Index) ranging from 11.3 to 20.2, with an average of 15.1 \(\pm\) 2.8 (\(p\) < 0.001 vs. control group). The BMI SDS (Body Mass Index standard deviation score) ranged from -4.2 to 0.9, with an average of -2.72 \(\pm\) 1.49 (\(p\) < 0.001 vs. control group).  
In contrast, the control group consisted of 85 healthy girls aged 12-20, with an average age of 15.1 \(\pm\) 1.9. Their average weight was 57.1 \(\pm\) 10.1 kg and their BMIs ranged from 16.5 to 25.8, with an average of 21.5 \(\pm\) 3.4. The BMI SDS ranged from -2.7 to 3.6, with an average of 0.19 \(\pm\) 1.44.  
Examples of the patient notes for the research and control groups are presented below, respectively:  
Research group note example:  
\"I think this weight was the only thing I could really control, and that's why I clung to it so tightly. Because there was nothing else I could decide about and my voice would be heard. At home I was always in last place, I was made fun of because of my figure. My peers were always pretty, slim, cheerful, self-confident, and I hated them for it. I hate the way I look, thick legs, curly hair, big lips--I look like a monkey princess. Sometimes I punished my body by vomiting. I know I'm not doing the right thing, my skin is dry, I have kidney problems, I ruined my teeth because of vomiting. And it seems to me that this weight, this control, was so huge because it seemed to me that it was the only thing that no one could take away from me. I could control it myself. If I decide to lose ten kilos, I will lose weight...\" Control group note example: \"My body looks pretty good. My weight is normal. I like myself. I take care of myself, I do sports, so I'm not obese because I eat quite a lot. It is very important to me. I like to take care of myself and in my opinion it looks good.\"