Jonathan D. Buckley is a medical researcher and professor specializing in cancer epidemiology, nutrition, and public health. His work often focuses on childhood cancers, preventive medicine, and the role of diet in long-term health outcomes. He has also contributed significantly to studies on cholesterol, dietary fats, and their relationship with cardiovascular risk. In addition to cancer and nutrition, his expertise includes biostatistics, clinical trial design, and epidemiology. Buckley plays a key role in guiding research that bridges clinical medicine with population health. His career highlights the importance of rigorous science in shaping practical strategies for better healthcare.