The most important factor of the effects of alcohol on driving is the weight of the driver. Alcohol, like other foods, must first be digested before it can be absorbed into the bloodstream. The rate of absorption of alcohol into the bloodstream may be slowed down by having food in the stomach. There is no known way of lessening the amount of time needed for the body to rid itself of alcohol. It takes at least one hour for 0.015 percent of alcohol in the blood to be used up by the body.
Alcohol is absorbed into the body at a much faster rate than it is eliminated.
The body gets rid of most of its alcohol through the kidneys. The percentage of alcohol in the blood from a given drink varies with the size of the person. Eating will speed up the rate of oxidation of alcohol in the liver. The rate of oxidation of alcohol for any one person does not change. Some of the alcohol from a drink reaches the brain within two minutes.