Many years ago was disputed how a working space indoors would look best. Should there be several secluded offices? Should there be a vast open space? Home office? The latter wasn’t a real option because internet connections haven’t been fast enough, even up to today. Many European workers complained about headaches. Studies found that many working hours were lost due to headaches. Noise in open spaces was suspected. Measures to reduce noise didn’t prove effective in reducing the cases of headache. So more studies were made, among them international comparisons. These found that such indoor headaches appeared in all countries, but differently abundant, in America significantly less than in Europe. The number of cases correlated with the frequency of the electricity grid!

The frequency of the electric grid is 60 Hz in America, but 50 Hz in Europe and Asia. Further examinations revealed that there are many more cases of headache in winter than in summer. Electric light is the reason for this. It is needed much less in summer. Electric light transmits the frequency of the electric grid to the human brain. Of course during many more hours in winter than in summer, so there are more cases of frequency caused headaches in winter than in summer. All effects of electromagnetic pollution are due to frequencies. So the indoor headaches are explained by the frequency of the electric grid and the transmission of the frequency via electric light during many hours. Further studies had revealed that increasing the frequency of the electric grid, to 100 Hz for example, could have reduced the cases of headaches significantly. The higher the frequency, the less cases of headache. But this is ignored. The number of electric devices able to transmit the frequency of the electric grid has been increased instead. Many electric devices also have their own frequencies, so they can produce more effects on the human body and perhaps also on the human mind. Although every physicist understands this, there is too much distraction by spin doctors, so that there is a huge lack of awareness and the problem still is ignored.