Generally the S.G. dont affect people negatively, but we are all different , and as in alimentation , there is not a regimen exactly the same for all ...
I had many working "on" all day for years with no problem except a better relaxation which can be for sure a placebo effect ...
For the soundfield i excluded just a mere -placebo effect because i made blind test experiments with all "on" ( maximal aural atmosphere around tones), half "on" (decreasing aural effects) and all "off" ( no aural effects) .. I had 12 low cost chinese one with battery, or power supply or usb , distributed all around the audio system and my listening position and connected to many wall plugs near and far from the gear ...
I like experiments more than upgrade purchases ... 😊
If you google your problem with sore toungue on the internet , you will see it is an idyosincrasic problem of you and very fee people ... How many people own salt lamps and repot only positive effect ? Almost all ...
"Schumann generator are not placebo at all, it is way more audible than atmosphere ionization ..."
I fell asleep next to the SG I purchased and woke up with an upset stomach (I rarely have them - not even once a year).
Following this I experienced the same if it was left on for more than 20-30 minutes.
It definitely affects my stomach, but it’s difficult to judge sonics while experiencing a stomach ache.
Has anyone experienced ill effects with the salt lamp - sore tongue?