Clinical trials are research studies that test new medical approaches, such as drugs or treatments, on human participants. They are essential for determining the safety and effectiveness of these interventions before they can be widely used. Each trial follows a strict protocol to ensure reliable results and participant safety. Participants in clinical trials may receive new treatments, a placebo, or standard care, depending on the study design. These trials are crucial for advancing medical knowledge and improving patient care, as they help researchers understand how different treatments work in diverse populations.