Reference: Przybylski, A. K. (2019). Digital screen time and pediatric sleep: Evidence from a preregistered cohort study. The Journal of Pediatrics, 205, 218-223. https://www.health.harvard.edu/staying-healthy/blue-light-has-a-dark-side Blue light has a dark side. Harvard Health Letter. Harvard Health Publishing. ( May, 2012 Updated: August 13, 2018)

Written by Shannon Cantalupo, B.S