Absolutely not! Oxygen Bars are perfectly safe. Oxygen bars have been around now for over 7 years and are popular in several countries; millions of people have enjoyed oxygen sessions around the world without a single health related incident, not a single lawsuit, nothing. The American Lung Association has said that breathing oxygen from an oxygen bar for less than 30 minutes has no harmful effects. There are people out there including some doctors offering opinions on oxygen bars from a perspective of ignorance and not taking the time to learn how they work, these people are doing a disservice to the public and creating controversy where there is none. Oxygen bars are safe, profitable and healthy!