HealthDay News — Parent-focused behavioral interventions seem to be insufficient for preventing obesity at age 24 months, according to a review published online Sept. 10 in The Lancet. Kylie E. Hunter, Ph.D., from the University of Sydney in Australia, and colleagues conducted a systematic review and individual participant data meta-analysis to examine the effectiveness of parent-focused early childhood obesity prevention interventions. Randomized controlled trials commencing before 12 months of age and examining parent-focused behavioral interventions to prevent obesity in children, compared with usual care, no intervention, or attention control, were included. The primary outcome was body mass index (BMI) Z score at age 24 months. The researchers found no evidence of an effect of interventions on BMI Z score at 24 months.