Beer that makes you... totally drunk!

Alcohol intake is measured in units. One unit is is roughly equal to half a pint of normal strength beer/lager/cider, a glass of wine or a pub measure of spirits. The list below shows the effect of drinking various amounts of alcohol and also indicates blood alcohol concentration (as mg alcohol per 100ml blood), as this determines whether an offence is committed by driving a motor vehicle. The current UK alcohol limit for driving is 80mg/100ml.

It's important to remember that the concentration of alcohol in the blood and its effects depend on a number of factors including body weight, type of drink, drinking environment, previous exposure to alcohol, stomach contents and sex of the drinker.

Alcohol has its strongest effect on women. This is because women's generally lower body weight means (for equal amounts drunk) they take in more alcohol per pound weight and also, as the female body contains less blood volume, the same amount drunk will produce a higher blood alcohol concentration in a woman than in a man.

∙ After 1 to 2 units (0.5 to 1 pint of beer - or 20-50mg/100ml) there is not much effect, beside a slight intensification of mood.

∙ After 3 to 4 units (1.5 to 2 pints of beer - or 50-80mg/100ml) there is usually a feeling of relaxation and mild sedation. There may be a slight impairment of steady movement. This is the legal limit for driving a vehicle and in fact 4 units of alcohol could put some people over the 80 mg/100ml legal blood alcohol limit.
∙ After 5 to 6 units (2.5 to 3 pints of beer - or 80-100mg/100ml) there is usually some loss of physical and mental co-ordination. Judgement and memory may be affected, particularly the ability to concentrate.
∙ After 7 to 8 units (3.5 to 4 pints of beer - or 120-200mg/100ml) most people slur their speech and are likely to have some difficulty in standing or walking. This level of intoxication can result in irresponsible behaviour and euphoria.
After drinking 15 to 20 units (7 to 10 pints of beer - or 200-300mg/100ml) most people will have passed out.

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