Units of alcohol are a measure of the volume of pure alcohol in an alcoholic beverage. They are used in some countries including the U.K. as a guideline for alcohol consumption.
One unit of alcohol is defined as 10 millilitres (7.9 grams) of pure alcohol in the United Kingdom, it is often stated that a unit of alcohol is supplied by a small glass of wine, half a pint of beer, or a single measure of spirits. Such statements may be misleading because they do not reflect differences in strength of the various kinds of wines, beers, and spirits.
What are the recommended limits of alcohol?
Women should drink no more than 14 units of alcohol per week, no more than three units in any one day, and have at least two alcohol-free days a week.
Pregnant women. Advice from the Department of Health states that … “pregnant women or women trying to conceive should not drink alcohol at all. If they do choose to drink, to minimise the risk to the baby, they should not drink more than 1-2 units of alcohol once or twice a week and should not get drunk”.