Hydrogen is very safe for humans.

Hydrogen is extremely safe for humans. Safety is a relative concept, and understanding the safety of hydrogen can be compared with other familiar gases.For example, if 100% oxygen inhalation can cause serious harm to the human body, even if 60% oxygen inhalation, as long as the time is relatively long, will also cause damage to the lungs.And 60 percent of the hydrogen can be inhaled over a long period of time without causing any harm.That is, hydrogen is safer than oxygen.In addition, for example, the inhalation of air at high pressure of 8 atmospheres will produce severe nitrogen anesthesia, but the inhalation of hydrogen at 8 atmospheres will not have an anesthetic effect. From this perspective, hydrogen is more safe than air.

In terms of safety, human trials in the field of diving medicine are even more important evidence.Because the hydrogen was once in the last century as a theory of diving technology widely attention, people has carried out many years animal and human subjects, the study found that exposing a diver in 20 hydrogen atmosphere environment, for 28 days, in addition to a certain inhibition on heart rate and mild anaesthesia effect, found no obvious harm to human body.Diving medical research shows that hydrogen is extremely safe for humans, beyond most common gases. The only gas that is close to hydrogen in safety is helium.

Hydrogen is gut bacteria metabolites, completely in the human gut can absorb part of the intestinal hydrogen in the gas, although the majority of the hydrogen amount is small, but this is, after all, the body's normal environment factors, this Angle can be said that endogenous gaseous hydrogen belong to the human body, some scholars study found that the way of hydrogen can also utilize the biological effect of antioxidant.It has even been suggested that some people live longer because they have higher levels of hydrogen in their bodies.The presence of hydrogen in the human body from the source of the intestinal tract indicates that hydrogen is a kind of environmental gas in the human body, which is also an important evidence of the safety of hydrogen.

In recent 10 years, with the rapid development of hydrogen medical research and industry, hydrogen-related products, especially hydrogen water, have been used on a large scale. Although some people are sensitive to hydrogen and some people even suffer from diarrhea, palpitation and other minor adverse reactions when drinking hydrogen water, no toxic effect of hydrogen on human body has been found.Although the evidence of hydrogen product application is not as strong as that of underwater high-pressure hydrogen research, the large scale of hydrogen application also provides important evidence for hydrogen safety.

However, it should be emphasized that when we say that hydrogen is safe for human body, we do not include the safety of hydrogen use process, because hydrogen is a kind of combustible gas, if not strictly regulated use, combustion of course will be very dangerous, which requires us to keep vigilant at all times.