Hydrogen Gas Inhalation Revives Failing Immune System in Septic Shock Patient
Molecular Hydrogen Reverses Sepsis-induced Immunoparalysis: Insights from Longitudinal Deep Immunophenotyping
Research hubs: Immune System · Cardiovascular System
- Evidence type
- Case report or series · Human study
- Authors
- Chang-Lung Wu, Jeng-Wei Lu, Yi-Jung Ho, Shan-Wen Lui, Ting-Yu Hsieh, Kuang-Yih Wang, Feng-Cheng Liu
- Journal
- In Vivo
- Year
- 2026
- PMID
- 42379742
- Study Type
- Human
- Participants
- 1
- Delivery
- Gas (Sustained Release)
- Dose
- hydrogen inhalation (adjuvant therapy)
- Duration
- 86 days
- Funding
- National Science and Technology Council, Taiwan (NSTC 112-2314-B-016-033); National Science and Technology Council, Taiwan (NSTC 113-2314-B-016-052); National Science and Technology Council, Taiwan (NSTC 114-2314-B-016-052-MY3); National Science and Technology Council, Taiwan (NSTC 114-2313-B-019-012); Tri-Service General Hospital, Taiwan (TSGH-E-112218); Tri-Service General Hospital, Taiwan (TSGH-E-113238)
- Conflicts of interest
- None declared
- Outcome
- Positive
- Peer Reviewed
- Yes
- Cited by
- 0 (OpenAlex, as of November 2026)
- Country
- Taiwan
TL;DR
Hydrogen inhalation was followed by temporary cardiac and immune improvements in one critically ill patient, but causation cannot be established.
Key Finding
Hydrogen gas inhalation was associated with reversal of immune exhaustion markers in T-cells and B-cells in a patient with life-threatening sepsis, including reduced expression of cell death signals and restoration of immune checkpoint proteins.
Summary
This case report describes a critically ill 49-year-old man with severe sepsis and heart failure who received hydrogen gas as an experimental treatment. Researchers used advanced blood tests to track changes in his immune system over time. The hydrogen therapy appeared to reverse immune exhaustion (a state where immune cells stop fighting infection effectively) and showed signs of restoring normal immune function, though the patient ultimately did not survive due to his underlying heart and liver conditions.
Practical Takeaway
This is a single case report in a critically ill patient with multiple severe conditions, so findings cannot be generalized to healthy people or mild illness. While the immune changes observed are intriguing and suggest hydrogen may warrant further study in sepsis, this case alone does not establish that hydrogen therapy improves survival or clinical outcomes. Much larger and more rigorous clinical trials would be needed before any health recommendations could be made.
Abstract (excerpt)
Background/aim: Refractory septic shock and post-cardiac arrest syndrome (PCAS) can induce lethal immunoparalysis. However, longitudinal evidence on the effects of molecular hydrogen on deep human immunophenotyping remains scarce. Case report: We report the case of a 49-year-old man with severe…