"Allan Frey would help pioneer the science that suggested otherwise. At the vanguard of a new field of study that came to be known as bioelectromagnetics, he found what appeared to be grave nonthermal effects from microwave frequencies—the part of the spectrum that belongs not just to radar signals and microwave ovens but also, in the past fifteen years, to cell phones. (The only honest way to think of our cell phones is that they are tiny, low-power microwave ovens, without walls, that we hold against the sides of our heads.) Frey tested microwave radiation on frogs and other lab animals, targeting the eyes, the heart, and the brain, and in each case he found troubling results. In one study, he triggered heart arrhythmias. Then, using the right modulations of the frequency, he even stopped frog hearts with microwaves—stopped the hearts dead.

Frey observed two factors in how microwaves at low power could affect living systems. First, there was the carrier wave: a frequency of 1,900 megahertz, for example, the same frequency of many cell phones today. Then there was the data placed on the carrier wave—in the case of cell phones, this would be the sounds, words, and pictures that travel along it. When you add information to a carrier wave, it embeds a second signal—a second frequency—within the carrier wave. This is known as modulation. A carrier wave can support any number of modulations, even those that match the ­extra-low frequencies at which the brain operates (between eight and twenty hertz). It was modulation, Frey discovered, that induced the widest variety of biological effects. But how this happened, on a neuronal level, he didn't yet understand.

In a study published in 1975 in the Annals of the New York Academy of Sciences, Frey reported that microwaves pulsed at certain modulations could induce "leakage" in the barrier between the circulatory system and the brain. Breaching the blood-brain barrier is a serious matter: It means the brain's environment, which needs to be extremely stable for nerve cells to function properly, can be perturbed in all kinds of dangerous ways. Frey's method was rather simple: He injected a fluorescent dye into the circulatory system of white rats, then swept the ­microwave frequencies across their bodies. In a matter of minutes, the dye had leached into the confines of the rats' brains.

Frey says his work on radar microwaves and the blood-brain barrier soon came under assault from the government. Scientists hired and funded by the Pentagon claimed they'd failed to replicate his findings, yet they also refused to share the data or methodology behind their research ("a most unusual action in science," Frey wrote at the time). For more than fifteen years, Frey had received almost unrestricted funding from the Office of Naval Research. Now he was told to conceal his blood-brain-barrier work or his contract would be canceled."

Excerpt from GQ Magazine's excellent "Warning: Your Cell Phone May Be Hazardous to Your Health"