title: Bone mineral density in adolescent girls with anorexia nervosa--a cross-sectional study.
abstract: The total body and lumbar spine bone mineral density (BMD) were measured in order to determine the prevalence and possible risk factors of decreased BMD in anorexia nervosa (AN).
  
  
  METHODS
  Sixty-one in-patient girls with DSM III-R AN: age 14.7+/-2.16 years; duration of AN 12.9+/-15.1 months; percentage of ideal body weight 70+/-8.7%; body mass index score -1.62+/-0.79.
  
  
  METHODS
  Total body (in 61 patients) and lumbar spine BMD (in 43 patients), content of lean and fat tissue mass were measured by DXA during the first month of treatment.
  
  
  RESULTS
  Low total body BMD was found in 23.7% and low lumbar spine BMD in 36.6% of patients. There was a negative correlation between BMD and age, age of menarche, degree of undernourishment, duration of AN and amenorrhea. A step-wise linear regression analysis revealed that age of menarche was the most important factor related to BMD in this group.
authors.affiliation: Department of Child Psychiatry, Medical University of Warsaw, Warszawa, Poland. psychiatria@litewska.edu.pl
authors.forename: G
authors.initials: G
authors.lastname: Jagielska
authors.forename: T
authors.initials: T
authors.lastname: Wolanczyk
authors.forename: J
authors.initials: J
authors.lastname: Komender
authors.forename: C
authors.initials: C
authors.lastname: Tomaszewicz-Libudzic
authors.forename: J
authors.initials: J
authors.lastname: Przedlacki
authors.forename: K
authors.initials: K
authors.lastname: Ostrowski
mesh_terms: D015502:Absorptiometry, Photon; D000293:Adolescent; D000328:Adult; D000856:Anorexia Nervosa / Q000150:complications* / Q000453:epidemiology / Q000503:physiopathology*; D018488:Bone Demineralization, Pathologic / Q000453:epidemiology / Q000209:etiology*; D015519:Bone Density; D002648:Child; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D016014:Linear Models; D008159:Lumbar Vertebrae / Q000503:physiopathology; D011044:Poland / Q000453:epidemiology; D015995:Prevalence; D012307:Risk Factors