On June 30, 2022, the Health Control Research Institute conducted a “Sleep Quality Test” using the tabletop negative ion generator “Ion Joy.” The results showed that compared to when Ion Joy was not used, there was a 32.4% improvement in ‘non-REM sleep’.
Non-REM sleep is a state where both the brain and body are deeply asleep, and the key to improving sleep quality lies in achieving deep, restful sleep. By enhancing the parasympathetic nervous system’s activity with negative ions to induce a relaxed state, deep sleep was achieved.
During non-REM sleep, amyloid beta—believed to be a cause of Alzheimer’s disease—is said to be expelled from the body.
This experiment suggested that sleeping in a negative ion environment may improve sleep quality (by increasing non-REM sleep) and potentially influence amyloid beta.