Dr. Hayashi Research

Hidemitsu Hayashi, Japanese cardiovascular surgeon and Director of the Water Institute in Japan, has investigated the benefits of hydrogen-rich water on health and aging since 1985.

One of his findings is associated with metabolism.

A week or two after people begin to drink Hydrogen Rich Water, they notice that their feces have literally changed compared to the ones drinking tap water (hydrogen poor water). That is, the blackish brown, bad-smelling, hard, heavy feces of the tap water days changed to light brown, soft, light feces without a strong bad odor.

We adults tend to think that it is natural for adults feces to have a bad smell, but this is actually a great misconception. Every breastfeeding mother knows from her experience that when her baby has light-coloured soft stool with very little bad odor, she can be sure that the baby is healthy, drinking plenty of breast milk, and growing well. On the other hand, when the baby has "blackish, bad-smelling, hard stool," the baby is cranky and feverish, and sometimes vomits up milk..

The condition of producing offensive feces is generally called abnormal fermentation of gastrointestinal tract, which indicates the opposite of normal fermentation, but, simply put, it is decay. Some of the substances that cause disgusting feces are:

  • Hydrogen Sulfide : A strongly toxic substance with a distinctive rotten-egg odor.
  • Ammonia : A strongly toxic substance with a distinctive irritating odor commonly found in public toilets.
  • Histamine : A substance that triggers allergic conditions.
  • Indole : A toxic, carcinogenic substances with a smell like rotten onions.
  • Phenol : Recognized to be carcinogens due to carbolic acid.
  • Nitrosamine : Known as a first-class carcinogen.

In a sense, failing to deal with offensive feces is like having a time bomb in your body. You can, however, defuse this time bomb by drinking Hydrogen Rich Water.

When we digest the food we take in by mouth in our stomach and intestines, these digested nutrients are absorbed through the intestinal walls. The nutrients absorbed through the intestinal walls pass through the portal veins and are carried to the liver in that order. The nutrients that are carried to the liver undergo various metabolic processes, after which they pass through the hepatic vein into vena cava inferior and carried to the organs all over the body by general circulation.

That is to say, they are transported in this order: liver → hepatic vein → inferior vena cava → general circulation → organs all over the body.

If we think of the liver as a kind of "checkpoint station," the parts of the process that occur before reaching the liver can be referred to as "upstream" and the parts that take place after leaving the liver as "downstream"


When the "upstream" is polluted the "downstream" is polluted as well. Thus, the disease-causing substances of upstream will cause diseases of downstream.

Because the substances that cause offensive feces are substances that result from the putrefaction of protein (eggs, fish or meat), they are called "putrefied metabolites." In short, it is as if people who always excrete offensive feces were eating rotten eggs, fish and meat everyday. The difference is that if they were eating rotten food, they would get sick immediately, while in this case the food rots after they eat it, so it takes more time for them to get sick.

Therefore, it is important to lead a lifestyle which does not produce offensive feces.

Hydrogen Rich Water avoids harmful feces.