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Senior managers at the National Toxicology Program (NTP) released the preliminary results of their cell phone radiation study late last week. They were so concerned about the elevated rates of two types of cancer among exposed rats that they felt an immediate public alert was warranted. They considered it unwise to wait for the results to wend their way into a journal sometime next year. Not surprisingly, the NTP report generated worldwide media attention.

There were some startling reactions. Both the American Cancer Society (ACS) and Consumer Reports immediately shelved their long-held, wait-and-see positions. In a statement issued soon after the NTP’s press conference, Otis Brawley, ACS’ chief medical officer, called the NTP report “good science.” Consumer Reports said that the new study was “groundbreaking” and encouraged people to take simple precautions to limit their exposures.

However, much of the mainstream media saw it very differently. The Washington Post ran its story under the headline, “Do Cell Phones Cause Cancer? Don’t Believe the Hype.”

Once again, power-frequency magnetic fields have been found to act as a cancer promoter.

Eighteen months ago an international team led by Elisabeth Cardis in Spain showed cancer promotion in workers exposed to chemicals and extremely low frequency (ELF) EMFs. Now an Italian team has found essentially the same promotional effect in animals exposed to ionizing radiation and ELF EMFs.

The new study, which was carried out at the Ramazzini Institute in Bologna, Italy, is part of the most ambitious EMF–animal project ever attempted.

NIEHS really doesn’t want to talk about it. Ten years into a $25+ million project to assess the cancer risk of wireless radiation in laboratory animals, the staff at the National Institute of Environmental Health Sciences remains tight-lipped and refuses to release project documents.

NIEHS has many reasons for keeping a low profile. The RF project, the most expensive in National Toxicology Program history, is years late and two-to-three times over budget. A more immediate concern is that it could force the institute into a position it would desperately prefer to avoid: Being at the center of the ever-contentious controversy over cell phone radiation and cancer.

The RF–cancer story took a remarkable turn a few days ago. A new animal study challenged many of the assumptions which lie at the heart of claims that RF radiation —whether from cell phones, cell towers or Wi-Fi— are safe.

The new study, from Germany, a replication of an earlier experiment, also from Germany, found that weak cell phone signals can promote the growth of tumors in mice. It used radiation levels that do not cause heating and are well below current safety standards. Complicating matters even further, lower doses were often found to be more effective tumor promoters than higher levels; in effect, turning the conventional concept of a linear dose-response on its head.