A clinical trial is a research study that evaluates the safety and effectiveness of new medical treatments, drugs, devices, or interventions in humans. These studies are essential for determining whether a new potential treatment is safe and effective before it can be approved for use by the general public. Clinical trials follow strict protocols to ensure the safety and well-being of participants and are typically conducted in phases, starting with small groups of participants and gradually expanding to larger populations. The results of clinical trials help to inform medical practice and guide decision-making by healthcare professionals.