Which is the key factor that influences BAC blood alcohol concentration?

The key factor that influences BAC (blood alcohol concentration) is the amount of alcohol consumed in a given time frame, relative to the individual's body weight and gender.

Here's how these factors affect BAC:

Amount of Alcohol Consumed: The more alcohol you consume within a shorter time, the higher your BAC will rise. The rate of alcohol absorption and metabolism varies from person to person.

Body Weight: Individuals with higher body weight distribute alcohol more widely in their body tissues and fluids, resulting in a lower BAC compared to those with lower body weight.

Gender: On average, women have a higher percentage of body fat than men of similar weight. Fat tends to retain more water than muscle tissue. Since alcohol is water-soluble, it distributes differently in men and women. In general, women typically have higher BAC levels than men when consuming the same amount of alcohol.

Other factors can also influence BAC, including age, metabolism rate, food consumption, and medications. It is important to note that there is no safe level of alcohol consumption, and any amount of alcohol can impair judgment and coordination.