1. Harm to health: Drugs can cause damage to organs such as liver, kidney, heart and brain, and may also lead to diseases such as cancer, tuberculosis, hepatitis and heart disease.
2. Harm to mental health: Drugs will have a serious impact on people's mental health, which may lead to mental diseases such as schizophrenia, depression and anxiety.
3. Harm to society: Drugs will cause serious damage to social order and may cause social problems such as crime, drug trafficking and drug abuse.
4. Harm to the family: Drugs will lead to family breakdown, and the relationship between family members may be seriously affected and even lead to family breakdown.
Therefore, the harm of drugs is very serious, and the use of drugs will have a serious impact on human health, mental health, social order, family relations and so on. It is necessary to strengthen drug prevention and control to avoid drug harm.