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Cognitive behavioral therapy (CBT) teaches behavioral and cognitive strategies that focus on achieving and maintaining lifestyle changes.

We examined the effectiveness of a CBT program (CHOOSE HEALTH) for improving body composition, diet, and physical activity in overweight and obese adolescents.

Adolescents [16 male, 31 female; aged 14.5 ± 1.6 y; body mass index (BMI; in kg/m²) 30.9 ± 4.2] were block-matched into 2 groups by age, sex, Tanner stage, BMI, and hip and waist circumferences and were randomly assigned to CBT or no treatment (control). CBT consisted of 10 weekly sessions, followed by 5 fortnightly telephone sessions.

Compared with the control, over 20 wk, CBT improved (significant group × time interactions) BMI (CBT, −1.3 ± 0.4; control, 0.3 ± 0.3; P = 0.007), weight (CBT, −1.9 ± 1.0 kg; control, 3.8 ± 0.9 kg; P = 0.001), body fat (CBT, −1.5 ± 0.9 kg …