BAC (Blood Alcohol Concentration)

Blood Alcohol Concentration (BAC) measures the amount of alcohol in a person's bloodstream. It is usually expressed as a percentage, indicating how much of a person's blood is alcohol. For example, a BAC of 0.08% means that 0.08% of the blood's weight is alcohol. BAC levels are used to assess a person’s degree of intoxication, influencing laws around drinking and driving. Higher BAC levels lead to diminished motor skills, impaired judgment, and increased risk of accidents. Legal limits vary by region, but typically, a BAC of 0.08% or higher is considered legally impaired in many places.