From Pediatric Clinics of North America: McKetta and Rich on children and video games

http://www.ncbi.nlm.nih.gov/pubmed/22093865

Pediatr Clin North Am. 2011 Dec;58(6):1493-508, xii. Epub 2011 Oct 14.
The fault, dear viewer, lies not in the screens, but in ourselves: relationships between screen media and childhood overweight/obesity.
McKetta S, Rich M.
Source
Department of Society, Human Development, and Health, Harvard School of Public Health, 677 Huntington Avenue, Boston, MA 02115, USA.

Abstract
This article summarizes recent findings about associations between electronic screen media and childhood overweight/obesity, hypothesized mechanisms, and mediators. Recommendations are made for parents and clinicians.