Dr Moore-Ede makes the compelling case that the light you see is as important to your health as the food you drink, the water you drink, and the air you breathe. He provides conclusive evidence that too many LED lights on store shelves produce cheap and bright “junk light” which can be as unhealthy for your body as junk food. THE LIGHT DOCTOR clarifies the science, describes the evidence-based healthy lights that are now available, and provides the essential practical guide for everyone who uses electric light.