Although there is considerable public concern about possible effects of mobile telephone base-stations on health and wellbeing no studies on that issue have been published so far. Since the introduction of modern mobiletele communication in the early 1990ies exposure of the public to high-frequency electromagnetic fields (EMF)has about doubled [1], at least in Europe. Nevertheless, it has been stated [2] that exposure to emissions from mobile phone base-stations are not of primary interest while effects of mobile telephones themselves should be investigated. However, there is a fundamental difference between exposure from mobile phones and their base-stations that has not been considered: while exposure to emissions from mobile phones is intermittent and typically of short duration, those from base-stations could be 24 hours a day persisting for years. There is presently no consensus about long-term effects of EMFs. The International Commission on Non-IonizingRadiation Protection (ICNIRP) declared such effects as not established [3]. Evidence in favor and against thisposition is weak, because studies on that issue are scarce and some suffer from methodological deficiencies.From a precautionary point of view, however, the evidence for long-term effects is sufficient to warrant athorough examination of possible effects on wellbeing and health from exposures to mobile telephone base-stations. It has been argued that if there are detrimental effects from exposures to modern telecommunicationthen we should have recognized such effects earlier due to implementation of powerful radio and television transmitters.