Alkaline ionized water electrolyzers have been approved for manufacturing in 1965 by the
Ministry of Health and Welfare of Japan as medical equipment to produce medical substances.
Alkaline ionized water (AIW) produced by this equipment is known to be effective against
gastrointestinal fermentation, chronic diarrhea, indigestion and hyperchylia as well as for
controlling gastric acid.*1 This is mainly based on efficacy of the official calcium hydroxide. *2
By giving AIW to rats for a comparatively long time under the condition of extremely high level of
intestinal fermentation, we have demonstrated that AIW intake is effective for inhibition of
intestinal fermentation when its level is high based on some test results where AIW worked
against cecal hypertrophy and for reduction in the amount of short-chain fatty acid that is the
main product of fermentation.*3 We have reported that this is caused by the synergy between
calcium level generally contained in AIW (about 50ppm) and the value of pH, and that frequency
of detecting some anaerobic bacteria tends to be higher in alkaline ionized water groups than
the other, although the bacteria count in the intestine does not have significant difference.
Based on these results, we made a judgment that effect of taking AIW supports part of inhibiti