Stats suggest it's all in the mind apparently (thinking you're getting sick or not feeling well because you're near cell-phone masts). The more interesting part of the study is determining to what degree humans can detect electromagnetic fields. See, showing we could detect that would offer those suggesting we have say telepathic powers at least a plausible physical mechanism for sending such information that isn't detected by our other senses.
But, as far as we know, we don't have receptors for EM fields (we're not talking about detecting light or the heat from IR obviously).
Apparently, the percentage of people that detected such fields reliably in the experiment was what was expected if people were responding based on chance alone.
"The report, suggests that "electromagnetic hypersensitivity" (EHS), a condition where sufferers feel ill in the vicinity of mobile phones, masts, and appliances like microwave ovens, could be all in the mind.
The experiments revealed only two of the 44 EHS sufferers (4.5%) could reliably tell whether the signal was switched on or off. A near-identical proportion of the other volunteers (five of 114, or 4.4%) did the same. The team say that this is the proportion you would expect based on chance alone.
There was also no evidence that the electromagnetic signals were responsible for any symptoms. During all the experiments Ã¢â‚¬â€œ whether there was a signal or not Ã¢â‚¬â€œ the EHS sufferers consistently reported more anxiety, fatigue and discomfort, and had higher blood pressure and heart rate than the control participants."
Here's the full study: