Short term affects:
A small amount of alcohol will make you relaxed and make you feel less anxious but large amounts suppresses the part of the brain which controls judgement, resulting in loss of inhibitions.
Affects physical co-ordination, causing blurred vision, slurred speech and loss of balance.

Long term affects:
Drinking too much alcohol will cause physical damage, increase risks of diseases and can make other diseases worse.
Excessive drinking can cause:
Hepatitis and cirrhosis of the liver
Gastritis (inflammation of the stomach lining) or pancreatitis (inflammation of the pancreas)
High blood pressure
Types of cancer such as mouth and throat
Brain damage
Failure of the heart
Neurological problems like epilepsy
Types of vitamin deficiency