According to the World Health Organization (WHO) definition, a drug is any substance that, not being produced by the body, has the property of acting on one or more systems, producing changes in its functioning.
The drugs act especially on the central nervous system, which is responsible for coordinating all body functions and its includes the brain. So acting in the brain, the drugs can affect mental process.
Explanation: EBP means evidence-based practice. So for the efficient treatment on all in the clinical cases a good EBP should be carried on all cases for treatments on all cases.
