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How Does Drinking on an Empty Stomach Effect My Breath or Blood Test Results?
Generally, when a person drinks on an empty stomach they will reach a higher blood alcohol concentration more quickly, and this higher concentration will last longer, then if the same amount of alcohol is consumed on a full stomach. This is one reason some people get charged with drunk driving even when they think they are drinking responsibly. They did not realize the little alcohol they had would put them over the legal limit. Here’s why this is true:
There are three things that impact a person’s blood alcohol concentration. These are alcohol absorption, distribution and elimination. Various factors can potentially impact all three of these factors, and possibly increase a person’s breath test. Generally the absorption of alcohol is a function of food in the stomach, distribution is a function of the amount of water present in various tissues in the body and the elimination of alcohol is largely a function of a person’s prior exposure to alcohol.
Ethanol, which is also called “beverage alcohol” or simply “alcohol,” has many interesting traits and characteristics. Because of Ethanol’s unique molecular structure, it will begin to be absorbed into the blood as soon as it comes into contact with tissues in your body. So, the absorption of alcohol will begin in your mouth. However, about 80% of the absorption into your bloodstream will take place in the lower intestine. This means that anything that stands in the way of alcohol getting from your stomach into your small intestine will significantly delay absorption. Certain foods, such as those that are high in fats and proteins, require the most time to digest. While you are digesting, a muscle between your stomach and your small intestine remains closed. Then, as you’re done digesting, the muscle opens, and the contents of your stomach pass into the small intestine. This typically happens over time, meaning smaller amounts of alcohol pass into your bloodstream for each unit of time. Also, as you are drinking alcohol, some elimination takes place in the stomach, and some alcohol is passing into the blood through the stomach tissues and then is eliminated by the liver. This means there’s less alcohol available to pass into the small intestine when the digestion is complete.