 The internet provides a venue to deliver these lifestyle programs to large numbers of individuals while decreasing the cost per person. HealthTrak, the University of Pittsburgh Medical Center UPMC patient portal, provides an ideal setting to test such a program. HealthTrak provides participants with access to individual medical information while facilitating electronic communication with their physicians. Portal enhancements will allow the delivery of a comprehensive lifestyle intervention aimed at weight loss, improved diet, and increased exercise, and provide the opportunity to communicate with experts regarding concerns. 