i) Excessive or harmful social case of drug is considered as drug abuse.
ii) Drug abuse effect many people, their families.
iii) Many drugs are harmful to brain and causes loss of memory, weakening
of nerves etc.
iv) The excessive use of alcohol can cause stomach problems. It can also
effect on lungs and liver.
v) Drugs can also effect on gametes, which result in abnormal children.
vi) Drugs also affect the general health of a person.