The PDF linked below is a very effective and helpful explanation of how our biology reacts to electromagnetic energy/frequencies out of the natural range (i.e., what exists normally in nature). Dr. Marino is a biophysicist with specialties in neurology and cell biology. Interesting points: EMFs are registered below the conscious level of the brain; that is, in what is called the "lower brain," below what is referred to as the cerebral cortex. Yet the stimuli (EM waves) produce physical results in our tissues and cells, felt by some people as distinct and uncomfortable symptoms/reactions. Conventional science dismisses the effects of EMFs as irrelevant and harmless, but thousands of studies indicate otherwise. Read full PDF here. More on Andrew Marino, Ph.D., J.D. here.