Hydrogen molecular health care has been developed for more than ten years. In addition to Professor Naruto Ota’s discovery that hydrogen molecules have selective antioxidant properties in 2007, some scholars have recently discovered that hydrogen plays a role of a certain communication factor, which can inhibit or activate certain cytokines.

As more and more hydrogen molecular health literature results are published, we still need to examine the safety of hydrogen used in humans. The seven major evidences about the safety of hydrogen used in humans are as follows.

The so-called endogenous gas refers to our body's own opportunity to produce hydrogen, so we are naturally tolerant to hydrogen. There are many bacteria in the human intestines. Some of these bacteria use sugars that we cannot absorb as a matrix to decompose to produce energy and produce hydrogen gas. However, most of these hydrogen gas is excreted from our body when we fart.

Molecular Hydrogen has been used in diving medicine for more than two hundred years. Because divers need to go deep into the seabed, the accompanying high pressure will cause hypertensive neurosis. Divers usually use breathing high-pressure hydrogen as a method of relief and prevention. The volume concentration is as high as 54% or more. When such a high dose of hydrogen enters the human body, it is still quite safe. Generally, we use breathing hydrogen to achieve a healthy volume concentration of about 1%-4%, which is far lower than diving requirements, so it is quite safe.

The description of hydrogen from the Hazardous Substance Database (MSDS) can confirm that hydrogen has no specific toxic reaction.

From 2014 to 2015, Europe, the United States, Japan, and China successively announced that hydrogen is a safe food additive. The US FDA even explicitly announced that hydrogen molecules dissolved in water or beverages can be directly listed in the GRAS (Generally recognized as safe abbreviation) level, which proves Drinking hydrogen water is absolutely safe.