People use all sorts of substances, both legal and illegal.
The obviously illegal drugs are things like cannabis (hash), speed (amphetamines), ecstasy (E), cocaine and heroin.
Many legal substances are also harmful and addictive - cigarettes, alcohol, glue, petrol and aerosols.
Society’s favourite drugs are alcohol and tobacco, both strongly addictive and misused by millions. A few medicines, such as tranquillisers, can also be addictive.
