Hydrogen intake relieves alcohol consumption and hangover symptoms in healthy adults: a randomized and placebo-controlled crossover study.

Background Alcohol-induced hangover represents a significant, yet understudied, global hazard and a large socioeconomic burden. Objective The aim of this study was to investigate the effects of hydrogen on relieving drinking and hangover symptoms in 20 healthy volunteers. Methods In this pilot, randomized, double-blinded, placebo-controlled, matched, crossover interventional trial, participants were matched into pairs and randomly assigned. Study group 1 inhaled placebo air for 1 h, followed by drinking 100 mL liquor (40% alcohol) within 10 min, and then pure water. Study group 2 inhaled a mixture of hydrogen and oxygen gas for 1 h, followed by drinking 100 mL liquor within 10 min, and then hydrogen dissolved in water. On a second intervention day (crossover) ≥1 wk later, study-group subjects were switched to the opposite order. Breath alcohol concentration (BrAC), hangover severity, and cognitive scores were measured. Results The BrACs within the hydrogen group were significantly lower than those within the placebo group after 30 min, 60 min, and 90 min (P   <  0.05). The hydrogen group reported having fewer hangover symptoms compared with the placebo group (placebo: 77% of symptoms absent, 19.7% of mild symptoms, 2.7% of moderate symptoms, 0.7% of severe symptoms; hydrogen: 88.6% of symptoms absent, 10% of mild symptoms, 1.3% of moderate symptoms, 0% of severe symptoms; P   <  0.001). Hydrogen treatment improved cognitive testing scores (P   <  0.05), including attention and executive functions. Furthermore, consumption of hydrogen was negatively (β = −13.016; 95% CI: −17.726, −8.305; P   <  0.001) and female sex was positively (β = 22.611; 95% CI: 16.226, 28.997; P   <  0.001) correlated with increased BrACs. Likewise, the consumption of hydrogen was negatively (OR: 0.035; 95% CI: 0.007, 0.168; P   <  0.001) while female sex was positively (OR: 28.838; 95% CI: 5.961, 139.506; P   <  0.001) correlated with the severity of hangover symptoms. Conclusions Hydrogen decreases BrACs and relieves the symptoms of hangovers. This trial was registered at the China Clinical Trial Registry (http://www.chictr.org.cn/showproj.aspx?proj=58359) as ChiCTR2200059988. [ABSTRACT FROM AUTHOR]