As the alcohol begins to depress different parts of the brain, you might experience blurred vision, slurred speech, and a loss of balance and coordination.
Alcohol can act as both a relaxant - making you feel drowsy - and a disinhibitor, reducing self-consciousness and making you talkative and liable to do things you wouldn't consider while sober.
Many people are able to drink casually without serious damage to their health - but many others may find themselves facing physical, emotional and financial problems as a result of a drinking habit they can't control.
Even casual users are subject to the pain of hangovers - a result of irritation to your central nervous system from the night before.
Other health risks include:
Drinking might make people feel attractive. Unfortunately, it can have the opposite effect. Physical effects might include:
Weight gain
Alcohol is high in calories (a pint of beer or a couple of glasses
of wine are about the same as a bar of chocolate.)
Dry skin
Alcohol dehydrates your body and skin, because it blocks the
release of anti-diuretic hormones, so the kidneys get rid of too
much water.
Broken veins
Alcohol dilates blood vessels near the surface of the skin, causing
ugly red capillaries or veins, especially around the nose and
cheeks.
Bloodshot eyes
Alcohol can inflame and
enlarge the small blood vessels on the surface of the eyes.
Smell
The liver metabolises most alcohol, but 5-10% is excreted straight
through the urine, breath and sweat.
Bruises and scarring
Serious drinkers are more likely to have accidents or fights,
leading to cuts, bruises and broken bones.
Even getting drunk occasionally can have serious consequences. It impairs your judgement and can increase risky behaviour, which could result in:
Even relatively moderate amounts of alcohol can be harmful sometimes, for instance, when you're pregnant, driving, taking some medications, or doing sports or activities that need judgement and coordination.