Original sentence: Although individuals who claim to suffer from electromagnetic hypersensitivity report that electromagnetic fields from common electrical devices trigger or exacerbate their symptoms, it has not been medically established that these fields play any role in the cause of these symptoms.Exposures are to intensity levels below those generally accepted to cause physiological effects, that is, non-ionizing, and the diverse physiological effects reported are not what would be expected from high intensity (ionizing) electromagnetic fields.Presently the scientific literature does not robustly support a link from the lower non-ionizing levels of radiation emitted by cellphones, for example, and reported symptoms, while carcinogeneity studies have been hampered by lack of longterm data
Edited sentence: Although individuals who report electromagnetic hypersensitivity believe that electromagnetic fields from common electrical devices trigger or exacerbate their symptoms, it has not been established that these fields play any role in the cause of these symptoms.Exposures are to intensity levels below those generally accepted to cause physiological effects, and the diverse physiological effects reported are not what would be expected from high intensity electromagnetic fields.Sufferers and their support groups are convinced of a causal relationship with electromagnetic fields, but presently the scientific literature does not support such a link