Harm caused by stimulants

1. Long-term use of narcotic drugs leads to addiction

2. The use of various hormone drugs leads to endocrine disorders, causing serious damage to internal organs such as the liver and even cancer.

3. Acute and severe blood loss, allergies and other reactions caused by blood doping during blood drawing or transfusion, as well as heart failure caused by overloaded blood circulation.

4. In order to pass the urine test, catheterization and urine exchange will do great harm to the athletes' body and mind.