However, the most susceptible variable in blood testing for alcohol levels is determined by the actual methodology of the blood drawing. First and perhaps most obvious, the sample is at risk of alteration by an alcohol swab before the needle is inserted.
Alcohol advertising is the promotion of alcoholic beverages by alcohol producers through a variety of media. Along with tobacco advertising, alcohol advertising is one of the most highly regulated forms of marketing. Some or all forms of alcohol advertising is banned in some countries. There are important studies about alcohol advertising published, such as J.P. Nelson's in 2000.
Alcohol is often served at social gatherings and is a normal part of the setting at places such as taverns where people go to congregate with others. Many believe that alcohol instills a sense of social confidence and promotes relaxation in the company of others. This occurs because of alcohol's disinhibition effects.