Answer: Option A
:
A
Substance abuse, also known as drug abuse, is a patterned use of a drug in which the user consumes the substance in amounts or with methods which are harmful to themselves or others, and is a form of substance-related disorder. This disorder causes severe physical trauma which affects their brain and also health. Thus according to the WHO definition of health, the drug addicted person's mental and social health are affected and the person cannot be called healthy.