With a BAC of what level do most people lose consciousness?

A Blood Alcohol Concentration (BAC) of .40 is typically associated with a significant impairment of mental and physical faculties, and most people at this level will experience a loss of consciousness. At .40 or higher, the central nervous system is severely depressed, leading to a risk of coma or life-threatening conditions.

It's important to understand that BAC levels correlate with impairment, and different individuals may respond differently based on factors like tolerance, weight, and health. Generally, a BAC of .25 can result in impaired judgment and motor skills, but consciousness may still be maintained. Levels approaching .30 can lead to confusion and stupor, while .50 reaches a critical threshold that almost always results in fatal outcomes. Thus, the .40 level is recognized as the point where unconsciousness is very likely for the average individual.