Modedration is key, may it be with the sun or any other emmiting source. I found that most if not all ionization studies don't take in effect accumulated effects total of all the sources a person comes in to contact with daily..

Let's just say after doing a thorough scan of all my power sockets and especially all extension chords. I made an effort last year to clean up the house from E-smog. Finding cheap crap emmiting more then 10x the save standard.

And although it's just anecdotal. The 'vibe' in my home has improved greatly!