Few drugs are as powerful as the human immune system. By generating an acute inflammatory response, it allows the body to defend against microbial invaders, cancer-causing cells, and environmental toxins, and helps heal injuries and infections. But there are also cracks in the system that can turn the body against itself, triggering autoimmune diseases. How do we tamp down on “bad” inflammation while maintaining its protective properties? Daniel Davis, author The Beautiful Cure: The Revolution in Immunology and What it Means for Your Health, takes us on a journey through the complex and messy biology behind our immune system.