INTRODUCTION:In hospitalised patients with both anorexia nervosa (AN) and atypical AN, premorbid body mass index (BMI; kg/m2), estimated from premorbid weight (i.e., weight at the onset of weight loss preceding eating disorder development) and admission height, strongly predicts admission weight loss (i.e., premorbid weight minus admission weight). We hypothesised that maximal weight loss (i.e., maximal historical weight minus minimal weight since eating disorder onset) is also correlated with maximal BMI. METHODS:In 520 female adolescents with AN (n = 503) and atypical AN (n = 17), relationships between admission age, admission and maximal weight loss, and maximal and minimal BMI were analysed with non-parametric Spearman's correlation coefficients. RESULTS:Like premorbid BMI in previous studies, maximal BMI was strongly correlated with maximal weight loss. DISCUSSION:Maximal BMI appears to be a sound substitute for premorbid BMI in correlations with admission weight loss in hospitalised adolescents with AN and atypical AN. Consistent use of maximal (vs. premorbid) BMI and admission (vs. maximal) weight loss in research would align with the metric weight suppression (derived from both maximal and current weight), thus facilitating cross study comparisons. Additional studies should assess correlations between both premorbid and maximal BMI and admission or maximal weight loss to attempt to identify the variables with the highest predictive value.

OBJECTIVE:While high caloric realimentation (HCR) is increasingly recommended for quick weight restoration of patients with anorexia nervosa (AN), the development of AN-specific psychopathology and somatic symptoms during HCR have so far insufficiently been studied. METHOD:Patients hospitalised for the treatment of AN received oral realimentation starting with 2000 kcal under close medical monitoring and a substitution regimen. Weekly over the initial 6 weeks of treatment, assessments included body weight, drive for thinnesss, body dissatisfaction, depression, and somatic symptoms. RESULTS:In 46 patients (mean age 27.57 years, 2 males, 44 females), the body mass index increased from 12.6 (SD 1.1) at baseline to 14.4 (SD 1.0) kg/m2 (p < 0.001) at week 6 (d = 2.57). Drive for thinnesss did not change (28.9 [SD 10.2] to 27.7 [SD 10.8]; p = 0.102), while body dissatisfaction increased slightly from 37.3 (SD 7.8) to 39.1 (SD 9.2; p = 0.019; d = 0.41). Depression and somatic symptoms decreased significantly (p < 0.001) with large effect sizes (d = 1.09, d = 0.90, respectively). No case of refeeding syndrome was encountered. DISCUSSION:HCR was medically safe and associated with a decrease in depressive and somatic symptoms at only slight increase in body dissatisfaction. Fast realimentation brings patients with extreme AN quickly out of a weight range dangerous to their health.

OBJECTIVE:Assessment of the longer-term outcome of anorexia nervosa (AN) in female adolescent inpatients (N = 132). METHOD:A follow-up (mean 8.2 years) after treatment was conducted. A subsample of 39 patients with at least 10 years of follow-up (mean 14 years) was defined. RESULTS:Over the 8-year follow-up period, the body mass index (BMI) increased from 14.33 (1.65) to 19.04 kg/m2 (2.97; t[112] = 17.33, p < 0.001, d = 1.63), and BMI percentiles increased from 0.50 (1.14) to 24.96 (26.81; t[112] = 9.83, p < 0.001, d = 0.92). Remission was found in 32.5% (8-year total sample) and 48.6% (14-year subsample). In the 8-year total sample, 15.1% still had AN or had relapsed (8.1% in the 14-year subsample). A cross-over from AN to binge-eating disorder was rare. The main cross-over occurred from AN to an eating disorder not otherwise specified (37.5% and 27.0%, respectively). The standardized mortality ratio was 21.7. DISCUSSION:In the long run, eating disorder diagnoses decreased significantly. Although a considerable proportion of patients recovered from their eating disorder, the number of recovered patients remained limited, with long-term negative consequences in a large proportion of patients. Standardized mortality was excessive, calling for ever-better therapies. Additional studies are needed to show if improved therapies lead to a better long-term outcome.

Anorexia nervosa is an illness affecting primarily adolescent girls and young women. Clinical guidelines recommend early intervention, with inpatient treatment for more severe cases. We present an evaluation of a multi-modal cognitive–behavioral inpatient treatment (CBT-E) involving carers in specialized units for adolescents. Routine data of 962 adolescent inpatients (26 boys) (mean age 15.48 [1.26]; range 12–17 years) were analyzed. Predictors of good body weight outcome (achieving a discharge BMI of at least 18.5 kg/m2) were identified by logistic regression analysis. Mean inpatient treatment lasted 96.69 (45.96) days. The BMI increased significantly from 14.93 (1.38) kg/m2 at admission to 17.53 (1.58) kg/m2 at discharge (z = 26.41; p < 0.001; d = 1.708). Drive for thinness decreased from 29.08 (9.87) to 22.63 (9.77; z = 18.41; p < 0.001; d = 0.787). All other subscores of the Eating Disorder Inventory also decreased significantly, with small to medium effect sizes. General psychopathology also showed significant decreases. The Beck Depression Inventory-II score decreased from 26.06 (11.74) to 16.35 (12.51; z = 18.41; p < 0.001; d = 0.883). A good body weight outcome was predicted by a higher BMI at admission (OR = 1.828), age at onset at 15 years or higher (OR = 1.722), and higher Somatization (OR = 1.436), Anxiety (OR = 1.320), and Bulimia (OR = 1.029) scores. CBT-E involving carers is an efficient intervention for adolescents with anorexia nervosa.

Anorexia nervosa is associated with a significant risk of morbidity and mortality. In clinical practice, health risk is assessed and estimated using routinely collected laboratory data. This study will develop a risk score using clinically relevant laboratory parameters. The related question is how to estimate the health risk associated with underweight using body weight, height and age.METHODS:We used routinely collected laboratory parameters from a total of 4087 patients. The risk score was calculated on the basis of electrolytes, blood count, transaminases and LDH. The nine parameters used were summed as zlog-transformed values. Where appropriate, the scales were inverted so that high values represented higher risk. For statistical prediction of the risk score, weight/height and age reference values from the WHO, the CDC (Center of Disease Control) and representative studies of German children and adults (KIGGS and NNS) were used.RESULTS:The score calculated from nine laboratory parameters already shows a convincing relationship with BMI. Among the weight measures used for height and age, the z-score from the CDC reference population emerged as the best estimate, explaining 34% of the variance in health risk measured by the laboratory score. The percentile rank for each age-specific median weight from the KIGGS/NNS still explained more than 31% of the variance. In contrast, percentiles explained less variance than BMI without age correction.CONCLUSIONS:The score we used from routine laboratory parameters appears to be an appropriate measure for assessing the health risk associated with underweight, as measured by the quality of the association with BMI. For estimating health risk based on weight, height and age alone, z-scores and percentages of age-specific median weight, as opposed to percentiles, are appropriate parameters. However, the study also shows that existing age-specific BMI reference values do not represent risk optimally. Improved statistical estimation methods would be desirable.

OBJECTIVE:The new ICD-11 eating disorders (ED) guidelines are similar to the DSM-5 criteria. One difference to the DSM-5 is the inclusion of subjective binges in the definition of bulimia nervosa (BN) and binge-eating disorder (BED). The aim of this study was to identify differences between the ICD-11 guidelines and DSM-5 ED criteria, which could impact access to medical care and early treatment.METHOD:Data of 3863 ED inpatients who completed the Munich Eating and Feeding Disorder Questionnaire were analyzed using standardized diagnostic algorithms for DSM-5 and ICD-11.RESULTS:Agreement of diagnoses was high (Krippendorff's α = .88, 95% CI [.86, .89]) for anorexia nervosa (AN; 98.9%), BN (97.2%) and BED (100%), and lower for other feeding and eating disorders (OFED; 75.2%). Of the 721 patients with a DSM-5 OFED, 19.8% were diagnosed with AN, BN or BED by the ICD-11 diagnostic algorithm, reducing the number of OFED diagnoses. One-hundred and twenty-one patients received an ICD-11 diagnosis of BN or BED because of subjective binges.DISCUSSION:For over 90% of patients, applying either DSM-5 or ICD-11 diagnostic criteria/guidelines resulted in the same full-threshold ED diagnosis. Sub-threshold and feeding disorders exhibited a discrepancy of 25%.PUBLIC SIGNIFICANCE STATEMENT:For about 98% of inpatients, the ICD-11 and DSM-5 agree on the same specified eating disorder diagnosis. This is important when comparing diagnoses made by different diagnostic systems. Including subjective binges in the definition of bulimia nervosa and binge-eating disorder contributes to improved ED diagnoses. Clarifying the wording of diagnostic criteria at several places could further increase this agreement.

OBJECTIVE The objective of this study is to report on the 5.5-years outcome of anorexia nervosa (AN) in male adolescent inpatients and compare it to the outcome of female adolescent inpatients with AN. METHOD Diagnostic eating disorder outcome was assessed by the Structured Inventory of Anorexic and Bulimic Syndromes (DSM-IV) in 20 males and 20 females matched for AN diagnosis, age at treatment, and length of follow-up. For documentation, follow-up scores of the Eating Disorder Inventory and the Brief Symptom Inventory are reported. RESULTS Diagnostic outcome did not differ between sexes. Four male and six female participants had AN at follow-up. One male and four females had crossed to bulimia nervosa, and five males and three females to eating disorder not otherwise specified. Remission was found in 10 males and 7 females. Effect sizes were mostly small. At follow-up females had higher scores than males with large effect sizes for drive for thinness (Cohen's d = 0.86) and body dissatisfaction (d = 1.07). DISCUSSION Few significant sex differences were found. Additional research involving larger samples of males and a broader range of assessed outcomes (e.g., drive for muscularity) in both sexes is urgently needed.

Objective To assess the ability of psychotherapists to predict the future outcome for inpatients with anorexia nervosa (AN) and bulimia nervosa (BN). Method Psychotherapists rated the prognosis of the patient's eating disorder on a five point Likert scale on several dimensions at the end of inpatient treatment. Actual outcome was assessed about 10 years after treatment. The sample comprised 1,065 patients treated for AN, and 1,192 patients treated for BN. Results Psychotherapists' rating of their patient's prognosis was not better than chance for good outcome in AN and BN and for poor outcome in BN. Prediction of poor outcome in AN was somewhat better with approximately two thirds of correct predictions. In logistic regression analysis, psychotherapists' rating of the patients' prognosis for AN contributed to the explained variance of long-term outcome, increasing the variance explained from 7% (by conventional predictors) to 8% after including psychotherapists' prognosis. In BN, there was no significant contribution of psychotherapists' prognosis to overall prediction. Discussion Our current knowledge of risk and protective factors for the course of eating disorders is unsatisfying. More specialized research is urgently needed.

An overview of eating and feeding disorders according to the future criteria of the International Classification of Diseases (ICD-11) is presented, including information on differential diagnosis, epidemiology, etiology, pathogenesis as well as therapy. Binge-eating disorder is new and the most frequent eating disorder. While anorexia nervosa and bulimia nervosa mostly affect women, the gender ratio in binge-eating disorder is more balanced. Concerning etiology, socio-cultural, biological and psychological factors are discussed. Cognitive behavioral psychotherapy is the best-validated treatment for all three eating disorders. According to the German guidelines for treatment (2019), focal psychodynamic psychotherapy is also a treatment option for anorexia nervosa. Evidence for the positive effect of psychopharmacologic drugs in the treatment of anorexia nervosa is still lacking. Fluoxetine has been shown to have a limited effect in the treatment of bulimia nervosa.

Four manuscripts on gastro-intestinal problems or disorders of gut-brain interaction are discussed from an epidemiological perspective. A literature review with strict inclusion criteria pointed out the dearth of evidence-based knowledge on gastrointestinal symptoms following treatment for anorexia nervosa. An epidemiological follow-up study showing the relevance of childhood abdominal pain for fasting to control weight in adolescence is used to emphasize the need to refine our approach to risk factor research in eating disorders. Two additional studies highlight the high prevalence of gastro-intestinal problems in eating disorders underscoring a need for improved consideration of these symptoms in clinical practice and eating disorder research.

Purpose Orthorexia nervosa (ON) is characterized by a preoccupation to eat healthily and restrictive eating habits despite negative psychosocial and physical consequences. As a relatively new construct, its prevalence and correlates in the general population and the associated utilization of mental health services are unclear. Methods Adults from the general population completed the Düsseldorf Orthorexia Scale (DOS), the Patient Health Questionnaire (PHQ), the Short Eating Disorder Examination (SEED). Results Five-hundred eleven (63.4% female) participants with a mean age of 43.39 ( SD = 18.06) completed the questionnaires. The prevalence of ON according to the DOS was 2.3%. Considering only effects of at least intermediate size, independent samples t -tests suggested higher DOS scores for persons with bulimia nervosa ( p < .001, Cohen’s d = 1.14), somatoform syndrome ( p = .012, d = .60), and major depressive syndrome (compared p < .001, d = 1.78) according to PHQ as well as those who reported to always experience fear of gaining weight ( p < .001, d = 1.78). The DOS score correlated moderately strong and positively with the PHQ depression ( r = .37, p < .001) and stress ( r = .33, p < .001) scores as well as the SEED bulimia score ( r = .32, p < .001). In multivariate logistic regression analyses, only PHQ depression scores were associated with past psychotherapeutic or psychiatric treatment (OR = 1.20, p = .002) and intake of psychotropic medication in the last year (OR = 1.22, p = .013). Conclusions The prevalence of ON was low compared to international studies but is in line with other non-representative German studies. Orthorexic tendencies related to general mental distress and eating disorder symptoms but were no independent reason for seeking treatment. Level of evidence Level V, cross-sectional descriptive study.

To report on the mortality of DSM-IV eating disorders and predictors of premature death in males compared to females after inpatient treatment. Crude mortality rate (CMR) and standardized mortality ratio (SMR) were computed for a large sample of males aged at treatment 16–61 years [N = 66 anorexia nervosa (AN), 52 bulimia nervosa (BN), 70 eating disorder not otherwise specified (ED-NOS)] and females aged 14–65 years (N = 2066 AN, 1880 BN, 1350 ED-NOS). In addition, a survival analysis and Cox regression analyses for identifying predictors of death were computed. CMRs for males and females, respectively, were 15% and 5% in AN, 8% and 3% in BN, and 4% and 3% in ED-NOS. Compared to the general population, mortality was elevated in males with AN (SMR = 4.93) and in all female diagnostic groups (AN, BN, ED-NOS). No significant sex differences for SMR emerged in any diagnostic group. Compared to females with AN or BN, males with AN or BN showed a shorter survival time after onset (survival analysis). Being male, and having AN, increased the risk of premature death. Mortality in inpatients with eating disorder is high, especially in AN. Males appear to have about the same outcome in terms of mortality as females with AN, BN, and ED-NOS. However, long-term survival was shorter in males with AN or BN compared to females. The need for intensive treatment in both males and females with an eating disorder remains an important issue. Level III, case–control analytic study.

OBJECTIVE:To report on the long-term mortality of eating disorders in male inpatients.METHOD:Crude mortality rates (CMR) and standardized mortality ratios (SMR) were computed for a large sample of males (147 anorexia nervosa [AN], 81 bulimia nervosa [BN], 110 eating disorder not otherwise specified [ED-NOS]; DSM-IV). In addition, a survival analysis from onset of eating disorder to death or end of observation was computed.RESULTS:CMR was 12.9% in AN, 11.1% in BN, and 6.4% in ED-NOS. Standardized mortality was significantly elevated in males with AN (SMR = 5.91; 95% confidence interval 3.56-9.23) as well as ED-NOS (SMR = 3.40; 95% confidence interval 1.37-7.01) but not in males with BN (SMR = 1.88; 95% confidence interval 0.86-3.58). Males with AN died sooner after onset of eating disorder than males with BN or ED-NOS.DISCUSSION:Mortality in male inpatients with eating disorder is high, especially in AN. There is need for developing more effective treatments to achieve better outcome.

Orthorexia nervosa is characterized by a preoccupation to eat healthily. However, reliability and validity of some of the existing measures of orthorexic symptomatology are questionable. Therefore, the aim of the current study was to examine internal reliability of and intercorrelations between four of the most popular self-report scales for measuring orthorexia nervosa: Bratman's Orthorexia Test (BOT), the ORTO-15, the Eating Habits Questionnaire (EHQ), and the Düsseldorf Orthorexia Scale (DOS). Five-hundred and eleven adults (63% female) completed all four instruments. Model fit of the originally proposed factor structures of the BOT, DOS, and EHQ was good but was unacceptable for the ORTO-15. Similarly, internal reliability was good for the BOT, EHQ, and DOS, but was unacceptable for the ORTO-15. The BOT, EHQ, and DOS were highly correlated with each other while correlations with the ORTO-15 were of medium size. A subsequent exploratory item analysis suggested that the poor psychometric properties of the ORTO-15 are largely due to the originally proposed scoring procedure. In conclusion, the BOT, EHQ, and DOS are internally reliable instruments that seem to measure the same construct-orthorexic eating behavior. In line with previous suggestions, we conclude that the ORTO-15 cannot be recommended for the measurement of orthorexia nervosa, at least not when the originally proposed scoring procedure is used.

Objective We report on the long-term outcome of males compared to females treated for anorexia nervosa (AN) or bulimia nervosa (BN). Methods A total of 119 males with AN and 60 males with BN were reassessed 5.8 +/- 4.6 and 7.5 +/- 5.9 years (respectively) after treatment and compared to matched female patients. Results At follow-up, males with AN had a higher body weight than females. For AN, remission rates (40% males vs. 41% females) did not differ at follow-up. And at follow-up, more males (34%) than females (19%) had an eating disorder not otherwise specified (ED-NOS; p < .01). At follow-up of AN, there was no binge-eating disorder (BED) and obesity was rare. For BN, remission rates (44% males vs. 50% females) and frequency of AN, BN, BED and ED-NOS did not differ at follow-up. Males with AN scored lower than females at follow-up on most subscales of the Eating Disorder Inventory (EDI) and on somatization, obsessive-compulsive symptoms, and depression (Brief Symptom Inventory). Males with BN scored lower than females with BN on perfectionism and higher on interpersonal distrust (EDI) at follow-up. Discussion Results from the scarce literature on males with ED are inconclusive regarding longer term outcome. In the present study, males with AN showed a slightly better outcome than females. In BN, outcome was about the same in males and females. According to our study, existing treatment is equally effective in both males and females. Additional research on the need of gender-specific diagnosis and therapy is required.

OBJECTIVETo assess the long-term outcome and identify outcome predictors in a very large sample of inpatients treated for bulimia nervosa (BN).METHODOut of a total of 2,033 patients admitted consecutively to specialized treatment, 1,351 patients (mean age at treatment 25.94) were assessed for follow-up on average 11 (SD 6) years after admission. Also a very long-term (21 years) subsample (N = 147; mean age 25.92) was defined. Bivariate and logistic regression analyses identified predictors of poor outcome.RESULTSFor more than 70% of the patients follow-up information could be gathered. Severity of eating disorder (ED) and other symptoms decreased over time but remained higher than in healthy controls, using published normative data. Remission rate was 38% after 11 years and 42% in the subsample after 21 years. Out of the total sample of N = 2,033 patients, 49 had died (2.4%). Persistent BN was found in 14.2% and the most frequent crossover was to ED not otherwise specified. Predictors of poor outcome were fewer follow-up years, higher drive for thinness, higher age at treatment, and less global functioning.DISCUSSIONBased on clinical indicators, patients presented with a high level of ED and psychiatric symptomatology. With less than half of the patients remitted after 22 years, efforts are needed to improve treatment outcome.