Do “Oxygen Enhancers” Actually Work? We Asked an Expert to Rate 5 Supplements for Altitude Activity.

Recently, Backpacker wrote about canned oxygen, and we spoke to Lindsay Forbes. She’s a pulmonologist and assistant professor of medicine at the University of Colorado Anschutz. Forbes took the air out of canned oxygen when we spoke, debunking its claims of mitigating the effects of altitude and enhancing athletes’ performance.