We know that used sensibly, alcohol can be enjoyable, but it is a drug. It slows down our mind, it slows down the speed with which we react and make decisions - too much is harmful. Not only does it loosen the tongue and relax the muscles, but also too much can make us say or do things which we later regret - we may even pass out!

What is 'too much'? Any amount which is causing problems for the drinker and his/her family, friends, relatives, partners, carers or employers. For some people, this may be a relatively small amount - for example, three or four pints, and not necessarily on a daily basis.

Sensible limits for adults are:

• Men - up to 4 units daily
• Women - up to 3 units daily

One unit of alcohol is equivalent to:

• Half a pint of beer
• One pub measure of spirits
• One glass of wine

Units should be spread over the week - bingeing is a form of alcohol abuse.

It takes the liver one hour to break down one unit of alcohol - so it is best never to drink and drive, even the morning after a heavy drinking session - as many people breathalysed on their way to work have found to their cost!