What is the lowest oxygen level a person can survive without becoming brain dead or die? 🥇



So if we state that the normal oxygen saturation level is between 90 and 99%. Then the higher the altitude, the lower it gets. And low oxygen levels definitely have an effect on human beings. Any cognitive activity usually become very hard at the level of 65% and the brain activity stops altogether at around 55%. There is some anecdotal evidence that suggests lower numbers are bearable for humans but the overall consensus doesn’t support any of these claims.

It’s easy!