dissolved CO₂ in water triggers circulatory responses that scale with concentration up to a saturation point
The threshold CO₂ concentration at which physiological effects appear is 400 mg/kg water, with effects increasing linearly up to 1,400 mg CO₂/kg water, after which they plateau; in healthy individuals the plateau is reached within 3 minutes, while patients with circulatory disorders require longer.
What this means for you
When CO₂ concentration in water reaches a certain level, your circulatory system responds — and that response grows stronger the higher the concentration goes, up to a natural ceiling. For most healthy people, the full effect kicks in within about 3 minutes, meaning even a short session can engage meaningful changes in blood flow and vascular tone.
The published research
CO2 Balneotherapy for Arterial Occlusion Diseases*:
· 1985
This page describes a documented finding about the underlying wellness technology. It is not a marketing claim about any specific device. For information about HOCATT specifically, visit hocatt.com.