Childhood body mass index and the subsequent risk of anorexia nervosa and bulimia nervosa among women: A large Danish population-based study
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Childhood body mass index and the subsequent risk of anorexia nervosa and bulimia nervosa among women : A large Danish population-based study. / Leth-Moller, Katja Biering; Hebebrand, Johannes; Strandberg-Larsen, Katrine; Baker, Jennifer Lyn; Jensen, Britt Wang.
I: International Journal of Eating Disorders, Bind 56, Nr. 8, 2023, s. 1614-1622.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Childhood body mass index and the subsequent risk of anorexia nervosa and bulimia nervosa among women
T2 - A large Danish population-based study
AU - Leth-Moller, Katja Biering
AU - Hebebrand, Johannes
AU - Strandberg-Larsen, Katrine
AU - Baker, Jennifer Lyn
AU - Jensen, Britt Wang
PY - 2023
Y1 - 2023
N2 - ObjectiveEvidence linking childhood body mass index (BMI) with subsequent eating disorders is equivocal. Potential explanations include different study populations and size, and that anorexia nervosa (AN) and bulimia nervosa (BN) should be studied separately. We examined whether birthweight and childhood BMI were associated with subsequent risk of AN and BN in girls. MethodWe included 68,793 girls from the Copenhagen School Health Records Register born between 1960 and 1996 with information on birthweight and measured weights and heights obtained from school health examinations at ages 6-15 years. Diagnoses of AN and BN were retrieved from Danish nationwide patient registers. We used Cox proportional hazards regression to estimate hazard ratios (HRs) and 95% confidence intervals (CIs). ResultsWe identified 355 cases of AN (median age: 19.0) and 273 cases of BN (median age: 21.8). Higher childhood BMI was linearly associated with decreasing risk of AN and increasing risk of BN at all childhood ages. At age 6, the HR for AN was 0.85 (95% CI: 0.74-0.97) per BMI z-score and the HR for BN was 1.78 (95% CI: 1.50-2.11) per BMI z-score. Birthweight >3.75 kg was associated with increased risk of BN compared to a birthweight of 3.26-3.75 kg. ConclusionHigher BMI in girls at ages 6-15 years was associated with decreasing risk of AN and increasing risk of BN. Premorbid BMI could be relevant for the etiology of AN and BN, and in identifying high risk individuals. Public significanceEating disorders are associated with elevated mortality, especially AN. Using a cohort of Copenhagen school children, we linked information on BMI at ages 6-15 years for 68,793 girls with nationwide patient registers. Low childhood BMI was associated with increased risk of AN, whereas high childhood BMI was associated with increased risk of BN. These findings may assist clinicians in identifying individuals at high-risk of these diseases.
AB - ObjectiveEvidence linking childhood body mass index (BMI) with subsequent eating disorders is equivocal. Potential explanations include different study populations and size, and that anorexia nervosa (AN) and bulimia nervosa (BN) should be studied separately. We examined whether birthweight and childhood BMI were associated with subsequent risk of AN and BN in girls. MethodWe included 68,793 girls from the Copenhagen School Health Records Register born between 1960 and 1996 with information on birthweight and measured weights and heights obtained from school health examinations at ages 6-15 years. Diagnoses of AN and BN were retrieved from Danish nationwide patient registers. We used Cox proportional hazards regression to estimate hazard ratios (HRs) and 95% confidence intervals (CIs). ResultsWe identified 355 cases of AN (median age: 19.0) and 273 cases of BN (median age: 21.8). Higher childhood BMI was linearly associated with decreasing risk of AN and increasing risk of BN at all childhood ages. At age 6, the HR for AN was 0.85 (95% CI: 0.74-0.97) per BMI z-score and the HR for BN was 1.78 (95% CI: 1.50-2.11) per BMI z-score. Birthweight >3.75 kg was associated with increased risk of BN compared to a birthweight of 3.26-3.75 kg. ConclusionHigher BMI in girls at ages 6-15 years was associated with decreasing risk of AN and increasing risk of BN. Premorbid BMI could be relevant for the etiology of AN and BN, and in identifying high risk individuals. Public significanceEating disorders are associated with elevated mortality, especially AN. Using a cohort of Copenhagen school children, we linked information on BMI at ages 6-15 years for 68,793 girls with nationwide patient registers. Low childhood BMI was associated with increased risk of AN, whereas high childhood BMI was associated with increased risk of BN. These findings may assist clinicians in identifying individuals at high-risk of these diseases.
KW - adolescence
KW - anorexia nervosa
KW - birthweight
KW - body mass index
KW - bulimia nervosa
KW - child
KW - feeding and eating disorders
KW - female
KW - height
KW - risk factors
KW - EATING-DISORDERS
KW - GENETIC CORRELATIONS
KW - WEIGHT
KW - MORTALITY
KW - ONSET
KW - BIRTH
KW - ASSOCIATIONS
KW - SYSTEM
U2 - 10.1002/eat.23986
DO - 10.1002/eat.23986
M3 - Journal article
C2 - 37194360
VL - 56
SP - 1614
EP - 1622
JO - International Journal of Eating Disorders
JF - International Journal of Eating Disorders
SN - 0276-3478
IS - 8
ER -
ID: 347530724