Scientists from two Krakow universities joined their forces to find markers of early obesity. The results of the research by Dr Magdalena Szczerbowska-Boruchowska, associate professor from the Department of Medical Physics and Biophysics at the AGH University, and Dr Agata Ziomber-Lisiak, M.D., from the Department of Pathophysiology of the Jagiellonian University Collegium Medicum, suggest that measuring the level of one of the trace elements present in the tissues, namely rubidium, can facilitate diagnosing obesity in the future.