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Phone mast allergy 'in the mind' | Phone mast allergy 'in the mind' |
(40 minutes later) | |
Mobile phone masts are not responsible for the symptoms of ill health some blame them for, a major UK study says. | Mobile phone masts are not responsible for the symptoms of ill health some blame them for, a major UK study says. |
Dozens of people who believed the masts trigger symptoms such as anxiety, nausea and tiredness could not detect if signals were on or off in trials. | Dozens of people who believed the masts trigger symptoms such as anxiety, nausea and tiredness could not detect if signals were on or off in trials. |
But when they thought the signal was on they reported more distress, suggesting the problem has a psychological basis. | But when they thought the signal was on they reported more distress, suggesting the problem has a psychological basis. |
However, the Environmental Health Perspectives study stressed people were nonetheless suffering "real symptoms". | However, the Environmental Health Perspectives study stressed people were nonetheless suffering "real symptoms". |
"Belief is a very powerful thing," said Professor Elaine Fox, of the University of Essex, who led the three year study. | "Belief is a very powerful thing," said Professor Elaine Fox, of the University of Essex, who led the three year study. |
"If you really believe something is going to do you some harm, it will." | "If you really believe something is going to do you some harm, it will." |
Mast Sanity, a campaign group, dismissed the findings on the basis that 12 sufferers who had initially signed up to the trials had dropped out due to ill health. This skewed the results, they argued, as it eliminated those most likely to have shown an effect. | |
The study was funded by the Mobile Telecommunications and Health Research programme, a body which is itself funded by industry and government. | The study was funded by the Mobile Telecommunications and Health Research programme, a body which is itself funded by industry and government. |
Modern appliances | Modern appliances |
It is unclear how many people in the UK suffer from "electro-sensitivity", an allergy they believe can be triggered by a range of modern day appliances from hair driers to mobile phone masts. | It is unclear how many people in the UK suffer from "electro-sensitivity", an allergy they believe can be triggered by a range of modern day appliances from hair driers to mobile phone masts. |
This should be reassuring news for anyone who is concerned about the possible short-term health effects of masts Dr James Rubin,King's College London | This should be reassuring news for anyone who is concerned about the possible short-term health effects of masts Dr James Rubin,King's College London |
In 2005 the Health Protection Agency (HPA) said there was no scientific evidence to link their ill health with electrical equipment, while acknowledging sufferers could have real and unpleasant symptoms. | In 2005 the Health Protection Agency (HPA) said there was no scientific evidence to link their ill health with electrical equipment, while acknowledging sufferers could have real and unpleasant symptoms. |
But the HPA research did not consider the effects of waves from phone masts, as most of the studies looking at electrical sensitivity were carried out before they were widely introduced. | But the HPA research did not consider the effects of waves from phone masts, as most of the studies looking at electrical sensitivity were carried out before they were widely introduced. |
A number of studies subsequently have looked at the mobile effect, but the Essex experiments are some of the largest and most detailed to date. | A number of studies subsequently have looked at the mobile effect, but the Essex experiments are some of the largest and most detailed to date. |
After 12 of the sufferers dropped out of the trial researchers tested a total of 44 people with a history of symptoms against a control group of 114 people who had never reported ill effects from masts. | After 12 of the sufferers dropped out of the trial researchers tested a total of 44 people with a history of symptoms against a control group of 114 people who had never reported ill effects from masts. |
When the signal was being emitted, and they were told of this, sensitive individuals reported lower levels of well-being. | When the signal was being emitted, and they were told of this, sensitive individuals reported lower levels of well-being. |
This was true for exposure to both forms of mobile systems - GSM and UMTS (3G). | This was true for exposure to both forms of mobile systems - GSM and UMTS (3G). |
However, when tests were carried out in which neither the experimenter or participant knew if the mast was on or off the number of symptoms reported was not related to whether a signal was being emitted or not. | However, when tests were carried out in which neither the experimenter or participant knew if the mast was on or off the number of symptoms reported was not related to whether a signal was being emitted or not. |
Chance finding | Chance finding |
Two of the 44 sensitive individuals correctly judged if it was on or off in all six tests, as did five out of 114 control participants. | Two of the 44 sensitive individuals correctly judged if it was on or off in all six tests, as did five out of 114 control participants. |
"This proportion is what is expected by chance," the researchers said. | "This proportion is what is expected by chance," the researchers said. |
The symptoms were real. As well as reporting feeling unwell, sensitive individuals had sweatier skin and higher blood pressure - both measures of a physiological response. | The symptoms were real. As well as reporting feeling unwell, sensitive individuals had sweatier skin and higher blood pressure - both measures of a physiological response. |
But this was regardless of whether the signal was on or off. | But this was regardless of whether the signal was on or off. |
"Hence the range of symptoms and physiological response does not appear to be related to the presence of either GSM or 3G signals," the study concluded. | "Hence the range of symptoms and physiological response does not appear to be related to the presence of either GSM or 3G signals," the study concluded. |
Other experts endorsed the study's findings. | Other experts endorsed the study's findings. |
Dr James Rubin, of the Mobile Phone Research Unit, King's College London, said the findings were in line with those from most other previous experiments. | Dr James Rubin, of the Mobile Phone Research Unit, King's College London, said the findings were in line with those from most other previous experiments. |
"This should be reassuring news for anyone who is concerned about the possible short-term health effects of masts," he said. | "This should be reassuring news for anyone who is concerned about the possible short-term health effects of masts," he said. |
But Mast Sanity declared "history has shown that many now commonly accepted physical conditions were initially dismissed as psychological". | But Mast Sanity declared "history has shown that many now commonly accepted physical conditions were initially dismissed as psychological". |
"Isn't it time that the government woke up to the reality of electrosensitivity instead of attempting to persuade sufferers that it is all in their minds?" said spokeswoman Yasmin Skelt. | "Isn't it time that the government woke up to the reality of electrosensitivity instead of attempting to persuade sufferers that it is all in their minds?" said spokeswoman Yasmin Skelt. |
But another campaign group, Powerwatch, commended the research as one of "one of the best designed and executed studies to date" while stressing that the number of dropouts was unfortunate. | But another campaign group, Powerwatch, commended the research as one of "one of the best designed and executed studies to date" while stressing that the number of dropouts was unfortunate. |
"So whilst it cannot be entirely ruled out that a small minority are truly sensitive, the proportions of any truly sensitive people are likely to be far lower than the 3% - 35% that has been quoted." | "So whilst it cannot be entirely ruled out that a small minority are truly sensitive, the proportions of any truly sensitive people are likely to be far lower than the 3% - 35% that has been quoted." |