Can the possible health risks of living near a mast be calculated?
BBC Radio 4's More or Less was broadcast on Thursday, 15 January, 2004, at 1500 GMT.
Should we necessarily be suspicious about cancer clusters?
In the 1970s and 1980s residents of Seascale in Cumbria were concerned about the high incidence of childhood leukaemia around the Sellafield nuclear reprocessing plant.
More recently, some people living near mobile telephone masts have become suspicious of a possible link between the masts and relatively high levels of cancer amongst the local population.
But, should we necessarily be suspicious about the fact that the incidence of cancer is not spread evenly across the country?
Producer: Michael Blastland
Editor: Nicola Meyrick