FRIDAY, Jan. 7, 2021 (HealthDay News) — According to a study published online Dec. 21 in Obesity.
Jennifer S. Savage, Ph.D., of Pennsylvania State University at University Park, and colleagues evaluated whether the responsive parent intervention Intervention Nurses Start Infants Growing on Healthy Trajectories (INSIGHT), offered to parents of firstborns, is associated with the body mass index (BMI) of first and second siblings during infancy. The analysis included 117 firstborns randomly assigned to either the responsive parenting program (counseling on feeding, sleeping, interactive play, and emotion regulation) or a control program (focusing on safety ).
The researchers found that the first and second children whose parents received the intervention with their first child had a BMI of 0.44 kg/m2 (95% confidence interval [CI]−0.82 to 0.06) and 0.36 kg/m2 (95% CI, -0.75 to 0.03) lower than controls, respectively. For the first-born and second-born cohorts, the linear and quadratic growth rates of BMI were similar, but second-borns had a higher mean BMI at 1 year.
“Although home-based parenting interventions are resource-intensive, their protective effect on child weight appears to trickle down to second siblings,” the authors write.