Smartphones are great but are they a health hazard? New research from the Swiss Tropical Health Institute (Swiss TPH) looked at nearly 700 adolescents ages 12 to 17 in Switzerland. They looked at the link between their daily exposure to radiofrequency electromagnetic fields (RF-EMF) and their memory performance. They found the effects of RF-EMF exposure was more pronounced in participants using their smartphone on the right side of their head, and that cumulative exposure to mobile devices over the course of a year negatively affects the figural memory. This type of memory refers to out ability to make sense of objects– including images, patterns and shapes– and the process takes place in the right hemisphere of the brain. The participants who held their phone right next to their right ear were most affected by exposure to radiation, but sending text messages, playing games, and browsing the internet will also cause marginal RF-EMF exposure. Study leaders say more research is needed to rule out the influence of other factors.