Family, peer, and media predictors of becoming eating disordered.
OBJECTIVE
To identify predictors of becoming eating disordered among adolescents.


METHODS
Prospective cohort study.


METHODS
Self-report questionnaires.


METHODS
Girls (n = 6916) and boys (n = 5618), aged 9 to 15 years at baseline, in the ongoing Growing Up Today Study (GUTS). Main Exposures Parent, peer, and media influences.


METHODS
Onset of starting to binge eat or purge (ie, vomiting or using laxatives) at least weekly.


RESULTS
During 7 years of follow-up, 4.3% of female subjects and 2.3% of male subjects (hereafter referred to as "females" and "males") started to binge eat and 5.3% of females and 0.8% of males started to purge to control their weight. Few participants started to both binge eat and purge. Rates and risk factors varied by sex and age group (<14 vs > or =14 years). Females younger than 14 years whose mothers had a history of an eating disorder were nearly 3 times more likely than their peers to start purging at least weekly (odds ratio, 2.8; 95% confidence interval, 1.3-5.9); however, maternal history of an eating disorder was unrelated to risk of starting to binge eat or purge in older adolescent females. Frequent dieting and trying to look like persons in the media were independent predictors of binge eating in females of all ages. In males, negative comments about weight by fathers was predictive of starting to binge at least weekly.


CONCLUSIONS
Risk factors for the development of binge eating and purging differ by sex and by age group in females. Maternal history of an eating disorder is a risk factor only in younger adolescent females.
Division of Adolescent/Young Adult Medicine, Department of Medicine, Children's Hospital, 300 Longwood Ave, Room LO-649, Boston, MA 02115, USA. Alison.Field@childrens.harvard.edu
Alison E
AE
Field
Kristin M
KM
Javaras
Parul
P
Aneja
Nicole
N
Kitos
Carlos A
CA
Camargo
C Barr
CB
Taylor
Nan M
NM
Laird
D000293:Adolescent; D000294:Adolescent Behavior; D000367:Age Factors; D015992:Body Mass Index; D001835:Body Weight; D002648:Child; D005195:Family Relations; D005247:Feeding Behavior; D001068:Feeding and Eating Disorders / Q000453:epidemiology* / Q000209:etiology; D005260:Female; D015438:Health Behavior; D006801:Humans; D008297:Male; D008402:Mass Media; D010379:Peer Group; D011446:Prospective Studies; D018570:Risk Assessment; D012307:Risk Factors; D012309:Risk-Taking; D012737:Sex Factors; D011795:Surveys and Questionnaires; D014481:United States / Q000453:epidemiology