No effect in humans of microwaves emitted by GSM and DCS mobile telephones on the chronobiological rhythms of melatonin.

deSeze R, Ayoub J, Fabbro-Peray P, Touitou Y, Miro L,

Presented at 1997 Second World Congress in Bologna, Italy: Journal of Pineal Research, In press 1998

Motorola-funded

Contractor: Laboratoire de Biophysiques Medicale, Faculte de Medecine, Nimes, France; Dept d'Information Medicale, CHU, Nimes; and Biochimie Medicale, Paris France

This study explored the possible effects of RF exposure from GSM or DCS mobile telephones on the rhythmic secretion of the hormone melatonin in healthy male volunteers. Telephone use took place under controlled conditions for two hours per day, five days a week for four weeks.

Analysis of blood samples taken before, during and after the test period found no evidence of RF-related effects on melatonin secretion.