Researchers at the University of Exeter Medical School have uncovered promising health benefits from hydrogen sulfide, the gas responsible for the smell of flatulence and rotten eggs.
Produced naturally in the body as bacteria break down food, this gas—while toxic in high concentrations—appears to act as a protector at low levels, potentially reducing risks of cancer, stroke, heart attack, arthritis, and dementia.
How does it work? By safeguarding mitochondria, the energy powerhouses within our cells.

Dr. Mark Wood from the University of Exeter explained: "Although hydrogen sulfide gas... is known as a smelly gas in rotten eggs and flatulence, this gas is produced naturally in the body and may actually be a health hero with important implications for future therapies to cure certain diseases."
To harness these benefits safely, the team developed AP39, a compound that delivers controlled, tiny amounts of the gas directly to mitochondria.
Professor Matt Whiteman stated: "We have exploited this natural process by making a compound, called AP39, which gently releases very small amounts of this gas specifically for the mitochondria. The results of our research indicate that if damaged cells are treated with AP39 gas, the mitochondria are protected and the cells remain alive."
This groundbreaking work, published in the journal MedChemComm, highlights hydrogen sulfide's therapeutic potential.
Sources: Time.com, University of Exeter.