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Metformin for pediatric obesity and insulin resistance: a retrospective study within an integrated health care system
Author(s) -
Concepcion Josephine Q.,
Tucker LueYen,
Huang Karen
Publication year - 2021
Publication title -
obesity
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.438
H-Index - 199
eISSN - 1930-739X
pISSN - 1930-7381
DOI - 10.1002/oby.23207
Subject(s) - medicine , metformin , insulin resistance , obesity , retrospective cohort study , percentile , insulin , body mass index , weight loss , pediatrics , statistics , mathematics
Objective Few treatments exist for pediatric obesity. Metformin holds potential for pediatric weight loss. This large retrospective study examined the effect of metformin on weight, BMI, BMI z score, and cardiometabolic outcomes. Methods The study included 7,068 patients aged 10 to 17 years with BMI at or above the 95th percentile and evidence of insulin resistance. The final cohort of 955 patients with BMI data at 0 to 24 months was categorized into three groups: metformin plus intensive lifestyle changes, intensive counseling alone, and routine counseling. In order to adjust for pubertal BMI changes, a subgroup analysis was conducted for adolescents aged 15 to 17 years. Results At 6 and 12 months, metformin treatment produced significant reductions in weight (−3.5 kg and −5.3 kg, p  < 0.0001), BMI (−1.06 kg/m² and −1.23 kg/m², p  < 0.0001), and BMI z score (−0.05 and −0.07, p ≤ 0.002), which continued to decrease at 24 months (−0.05 and −0.08, p  = 0.11 and 0.01), compared with control groups. Adolescents aged 15 to 17 years showed similar improvements. Systolic blood pressure and high‐density lipoprotein cholesterol also improved in the metformin group. Conclusions Metformin with lifestyle interventions significantly reduced weight, BMI, and BMI z score in pediatric patients with obesity and insulin resistance up to 24 months, compared with intensive and routine counseling alone.

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