The SundStart intervention aimed at preventing the development of overweight and obesity among 2-6 years old Danish children who were yet normal weight, but were considered predisposed to future overweight and obese. The intervention gave individual advice to families of the young children to reduce family sterss and improve diet habits, physical activity, and sleeping habits. The project aimed to answer the question whether targeting high risk groups and initiating prevention early in life would successfully prevent excessive weight gain, as well as improve diet habits, increase physical activity, reduce stress and improve sleeping habits. The project is coordinated by Professor Berit L Heitmann, PhD and Postdoc Nanna Julie Olsen. The project is financed by TrygFonden, Dansih medical research council and Helsefonden.