Research into the regulatory role of hydrogen sulfide is confined to cells grown in petri dishes and in mice, but it is no joke, Dr. Csaba Szabo, a professor of anesthesiology at UTMB, told NBC News, “and would be a real tragedy if social media turned it into one.” Szabo has collaborated with the University of Exeter researchers and conducted experiments of his own. “Hydrogen sulfide regulates vascular function, inflammatory responses, neurotransmission in the brain, many different things,” says Szabo, including cancer.