At what BAC level can one risk hypothermia and unconsciousness?

The risk of hypothermia and unconsciousness significantly increases with blood alcohol concentration (BAC) levels due to the depressant effects of alcohol on the central nervous system and its impact on the body's ability to regulate temperature. BAC levels in the range of 0.3% to 0.4% are particularly concerning because at this stage, there is a high likelihood of experiencing severe impairment of both motor functions and cognitive abilities.

Individuals with BAC levels in this range may become physically unable to react properly to environmental conditions, such as cold weather, making them more susceptible to hypothermia. Additionally, at these levels, there is a strong risk of loss of consciousness due to alcohol's effects on brain function. This can further exacerbate the risk of hypothermia since the body's mechanisms for generating heat and maintaining core temperature are compromised. Therefore, this range is the one where the combination of these risks becomes particularly dangerous, leading to serious health consequences.