Lennart Hardell has found no association between the use of cellular or cordless phones and the incidence of salivary gland tumors. “There was no effect with increasing tumor induction period or number of hours of use of the different phones.”
Hardell and coworkers report in the August issue of Occupational and Environmental Medicine. He cautions, however, that only six cases had used a phone for more than ten years and all of these subjects had used an analog phone: “Thus, this study cannot exclude an increased risk among subjects with heavy use for a long time period.” In the past, Hardell has reported an increased risk of brain tumors among users of cell and cordless phones.
