Efficacy of the Lunch is in the Bag intervention to increase parents’ packing of healthy bag lunches for young children: a cluster-randomized trial in early care and education centers

Background Lunches that parents pack for their young children to eat at school or the Early Care and Education (ECE) center fall short of recommended standards. Lunch is in the Bag is a multi-level behavioral nutrition intervention to increase parents’ packing of fruit, vegetables, and whole grains in their children’s lunches. Designed for implementation in ECE centers, the five-week long intervention is followed three months later with a one-week booster.