Light as a Nutrient: Sunlight, Circadian Rhythm & Metabolic Health | Dr. Max Gulhane on The Signal Podcast

I speak with Johnathan Jarecki, undergraduate science student and host of The Signal Podcast, on all things photobiology. We discuss the full solar spectrum and how ultraviolet, visible, blue, red and near-infrared light each affect human physiology, including the POMC pathway, nitric oxide and blood pressure, and the evidence on sunlight, skin cancer and the vitamin D paradox. We also discuss how artificial light at night suppresses melatonin and disrupts the circadian control of DNA r...