Digital interventions, or mHealth or eHealth interventions, are increasingly common in health care and it's important to evaluate their effects. With this in mind, a new Cochrane Review from February 2024 examines the evidence for smartphone interventions for adolescents and adults with overweight or obesity. In this podcast, Eva Madrid, from the University of Valparaíso in Chile, talks with lead author Maria-Inti Metzendorf, from the University of Düsseldorf, Germany, both of whom are currently on fellowships at the Iberoamerican Cochrane Center in Barcelona, Spain.