E8 - Part 2: How to use & avoid light to optimize health with Samer Hattar

In the second part with Dr. Samer Hattar (Chief of the Section on Light and Circadian Rhythms at the National Institute of Mental Health, Bethesda, MD, USA), we discuss the concept of extraocular phototransduction, meaning how the human body can sense and adjust to light beyond the eyes. We highlight how light at night possibly via impaired sleep can lead to higher appetite & cravings for unhealthy food. Lastly, Samer points out that "Why should I change anything? I sleep well!" people should still reduce light at night to improve health.