Prevention of Permanent Obesity in Children

In the county of Oppland, Norway, questionnaires addressing physical and mental health and socioeconomic status is issued to all (1960) families who meet for the pre-school assessment at the public health clinics in 2007. Particularly growth, physical activity and diet is addressed. Families who have children with a BMI \>18.9, which corresponds to BMI\>30, and living in selected municipalities in the county are invited to participate in a 5 year intervention program in order to avoid future overweight conditions in children. Similarly overweight children from the rest of the county serve as controls.