blood alcohol content (BAC)

Blood Alcohol Content (BAC) measures the amount of alcohol in a person's bloodstream, expressed as a percentage. For example, a BAC of 0.08% means that 0.08% of the blood's volume is alcohol. It helps determine levels of intoxication and is used in legal settings to assess impairment when driving. Higher BAC levels can lead to more severe impairment, affecting judgment, coordination, and reaction times. Different factors, such as weight, gender, and drinking pace, influence an individual's BAC. Many countries enforce legal limits for drivers, often set at 0.08% or lower, to promote safety.