As an expert in the field, Dr. Litovitz presented to US Congressional members in 2001 his findings of the biological effects of EMF. 

Dr. Litovitz' interest in physics was triggered as a Navy radar repair technician during World War II, and although he was educated in the field of acoustics, his intellectual curiosity led him into fiber optics, glasses and electromagnetics.

His most recent work centered on the effects of electromagnetic radiation on organisms. The field had been characterized by controversy and inconclusive findings when Dr. Litovitz noticed a Swedish researcher's tantalizing report of increased incidences of brain cancer in people who used cellphones for more than 2,000 hours. The cancer also seemed to occur on the side of the face where the phone was held.

Dr. Litovitz began experimenting with eggs, said Macedo, who is director of the Catholic University lab. He discovered that the type of electromagnetic radiation emitted from cellphones or power lines can cause biological changes at the cellular level. That radiation, he found, could be masked by superimposing electrical white noise. So he developed and patented an electronic chip that could be attached to cellphones and override the radiation.

His research, published in the Journal of Cellular Biology in 2002, caused a stir among cellphone users torn between the emerging science and reassurances from phone companies. Dr. Litovitz, however, did not hesitate to stake out a position.

"These findings have important implications with regards to potential health effects from prolonged or repeated exposure to mobile-phone radiation,'' he told a trade journal, RCR Wireless News. "Because stress proteins are involved in the progression of a number of diseases, heavy daily cell-phone usage could lead to great incidence of disorders such as Alzheimer's and cancer.''
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