Alcohol Consumption - Uses

Uses

In many countries, people drink alcoholic beverages at lunch and dinner. Studies have found that when food is eaten before drinking alcohol, alcohol absorption is reduced and the rate at which alcohol is eliminated from the blood is increased. The mechanism for the faster alcohol elimination appears to be unrelated to the type of food. The likely mechanism is food-induced increases in alcohol-metabolizing enzymes and liver blood flow.

At times and places of poor public sanitation (such as Medieval Europe), the consumption of alcoholic drinks was a way of avoiding water-borne diseases such as cholera. Small beer and faux wine, in particular, were used for this purpose. Although alcohol kills bacteria, its low concentration in these beverages would have had only a limited effect. More important was that the boiling of water (required for the brewing of beer) and the growth of yeast (required for fermentation of beer and wine) would tend to kill dangerous microorganisms. The alcohol content of these beverages allowed them to be stored for months or years in simple wood or clay containers without spoiling. For this reason, they were commonly kept aboard sailing vessels as an important (or even the sole) source of hydration for the crew, especially during the long voyages of the early modern period.

In cold climates, potent alcoholic beverages such as vodka are popularly seen as a way to “warm up” the body, possibly because alcohol is a quickly absorbed source of food energy and because it dilates peripheral blood vessels (peripherovascular dilation). This is a misconception because the “warmth” is actually caused by a transfer of heat from the body’s core to its extremities, where it is quickly lost to the environment. However, the perception alone may be welcomed when only comfort, rather than hypothermia, is a concern.