According to WHO, substance abuse refers to the harmful or hazardous use of psychoactive substances, including alcohol and illicit drugs. It is the use of a drug in amounts or by methods which are harmful to the individual or others by causing physical, social and psychological harm.
Drugs most often associated with this term include:
Alcohol, amphetamines, barbiturates, benzodiazepines, cannabis, cocaine, hallucinogens, methaqualone, and opioids…
But the list doesn’t end there, as prescriptions, and over-the-counter medications, inhalants and solvents, and even coffee and cigarettes can all be used to harmful excess.