Fatal electric shocks cluster in a narrow band. Household mains sits in the middle of it.
Ventricular fibrillation is the main cause of fatal shock between roughly 15 and 100 Hz — exactly where mains sits (50 Hz UK, 60 Hz US). IEC 60479-2 is the international standard covering 1 kHz to 10 kHz, and the fibrillation threshold rises as frequency climbs. Nerves have a maximum firing rate; above a few kHz each half-cycle is too brief to trigger one. At high enough frequency current runs at the surface — which is why electrosurgery can burn tissue without stopping a heart.
Public understanding of it. A plasma globe at about 27 kHz will not stop your heart — but add copper tape and a ground path and it will start a fire. The danger doesn't vanish, it changes character.
“High voltage isn't what kills you. Frequency is.”
Tesla coils and Faraday suits demonstrate energy transfer. Medical cold plasma runs at 3–15 watts — less than a fridge bulb. Opposite engineering intent.
“Our frequency is above the dangerous band” is true. “Therefore this device is safe” is a different claim and it does not follow.
This is an extract. The full picture is in The Evidence Map — or start at the library index.
Cold Plasma Research Library. Compiled from Europe PMC and ClinicalTrials.gov, September 2026 — 4,846 cold plasma papers, 662 on plasma-activated water, 52 registered trials. Counts are title-restricted and therefore floors, not ceilings: a low number means barely anyone has made this their subject, not that nobody has ever looked.
These pages describe published research on a technology. They do not describe or endorse any product, they are not medical advice, and nothing here should be used to decide about treating a health condition. Speak to a qualified clinician about anything that matters.