Anyway, the way to start with your hypothesis is really simple. Relate the amount of relevant electromagnetic energy in the environment to whatever symptom you think it causes and measure the population for that symptom. Get people who exhibit the symptoms to places where that energy is absent (removed from society, in a Faraday cage, whatever). Check if the symptoms disappear. It doesn't have to disappear completely, just gradually. If you believe that even the slightest amount of EM radiation will still have an effect, so a test free of it is practically impossible, I have a surprise for you.