What percentage of alcohol enters the bloodstream through the small intestine?

The correct answer indicates that a significant majority of alcohol is absorbed into the bloodstream through the small intestine, which is consistent with physiological understanding. When an individual consumes alcoholic beverages, the absorption process begins in the stomach but is primarily completed in the small intestine.

The small intestine has a large surface area and a highly vascular structure, which makes it particularly efficient at absorbing nutrients and substances, including alcohol. This efficiency means that once alcohol reaches the small intestine, a substantial amount—reported widely in the range of 75-80%—is absorbed into the bloodstream relatively quickly.

Understanding this absorption process is crucial in appreciating how alcohol impacts the body. The quicker absorption in the small intestine explains why drinking on an empty stomach can lead to faster intoxication, as more alcohol makes its way into the bloodstream without interference from food.