According to Professor John William Frank, an epidemiologist and physician at the University of Edinburgh, we should “err on the side of caution” by delaying any further rollout of 5G networks, “pending more conclusive research” on its safety. Frank made his argument in a peer-reviewed paper published in the Journal of Epidemiology & Community Health. 5G doubts fueled by scientific uncertainty 5G technology has been hailed by governments, as well as certain vested interests, as transformative, promising economic and lifestyle benefits through greatly boosting wireless and mobile connectivity. Compared to previous-generation technologies, 5G has a higher transmitter density, meaning that it needs more transmitter masts over a given distance. This exposes more people to radiofrequency electromagnetic fields at levels that, Frank argues, could potentially be harmful to human health.