EMF(electro-magnetc fields) also represent a danger to Prana depletion.

High tension (High-voltage) over head Transmission/powerlines, High power machinery, X-ray machinery,  Medical scanning machinery, High energy electrical Transformers, Magnetic underlays on your bed, even the fields around your refrigerator condensers if you happen to sleep on the wall, the other side of your kitchen refigerator. 

Most people forget that humans have NEVER been subjected to so many high energy fields in the past. These pulsed magnetic fields which generate from the AC electricity which powers them, by induction, pulse your very own cells at this same frequency unnaturally stimulating cells having untold ill-effects. Of course, clasically, the only magnetic fields humans have had any longterm exposure to is the Earth's DC (non pulsed) magnetic fields at VERY low strengths.

One particular case comes to mind of a woman  who consulted me for ovarian cancer after being poorly dealt with by her doctor she was interested in another opinion.

After a few sessions with little improvement she was open enough with me to discuss her health history in more depth.
I suggested to her that testing suggested her body was being ill-effected by some powerful EMFs to which she could not remember any past exposure.

However, after a few moments thought, she related the following (paraphrasing here):
I was diagnosed with my ovarian cancer just AFTER we sold our house… We had struggled to sell our house over some 3 years 'cos the small acreage was underneath these high-voltage over head powerline towers. (Curiously, the shape of our property ran parallel to these overhead power lines)
During the time of our 6 year tenure in this property we had 2 horses, one cow, one sheep and a dog succumb to cancer too. Our Veterinarian put 2 & 2 together and scoured our property and soil tested for chemical (& other) toxins but just could not find anything. I was close-to-my-animals and greived at their loss. 
However, we ALSO put 2-&-2 together and resolved to sell our small acreage to get away from the only possible ill-effect it could have had upon us.
My Comment: By-the-way, she said that in those 3 yrs of trying to sellup that they had to drastically drop the asking-price to even get anyone interested in the first place.

Co-incidence that 5 animals all got cancer whilst being restrained next to these fields day-in-day-out? Maybe.
Co-incidence that she got cancer too? Maybe! But, dear reader:What would YOU do if you were in her shoes? Anything different? I doubt it.

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