Double-blind studies are crucial in clinical trials as they eliminate biases. In these studies, neither the participants nor the researchers know who is receiving the treatment or placebo. This design minimizes subjective influence and ensures that the results are due to the intervention itself rather than external factors, enabling more reliable data. It promotes scientific rigor and helps in establishing actual efficacy and safety of treatments tested. Thus, double-blind studies enhance the credibility of findings and support informed medical decisions.