Cost-effective approaches that can reach broad populations of obese people are thus needed and have to be evaluated overall with regard to compliance and healthy behavior maintenance in the long term. In fact, promising methods for granting continuity of care to wide populations of patients at low costs are provided by telemedicine and its more specific branches called “e-therapy”, “telecare” and “e-health” (Pagliari, Sloan, Gregor, Sullivan, Detmer, Kahan, Oortwijn, & S. 2005, Eysenbach 2001).