The five factors used to determine the individual stressor index for the adolescents were:
The researchers wrote that the adolescents' relationship with stress and becoming overweight may be a result of biological (perturbed hypothalamic-pituitary-adrenal glands) as well as behavioral responses to stress, such as overeating and lack of exercise.
"It could possibly be that the obesity is leading to these stressors too," Lohman said. "And so the work that we're doing right now looks at which one of these is really coming first: the stressors or the obesity. We know that it is cyclical and that all of these factors just compound on each other."
The study also found that a mother's stress, coupled with food insecurity in the household -- a situation in which an individual cannot access enough food to sustain active, healthy living -- contributes to a child's chances of becoming overweight or obese.
"In our past research, we did not find this association for older youth (ages 11-17), we only found it for young children (ages 3-10) who were in a house that had enough food or were food-secure," Lohman said. "But it may be that the adolescents are more cognitively aware of what's going on in the household and they take on their mothers' stress as well. This may be exacerbated in houses where there's not enough food."
While this study singles out mothers, fathers aren't immune to their child's weight status either.
"My own research focuses on fathers and shows that fathers, too, have an effect on children's eating habits and obesity," said Stewart, author of the book "Brave New Stepfamilies," who had another study posted by the Journal of Adolescent Health last month on nonresident fath
|Contact: Mike Ferlazzo|
Iowa State University