Phan and colleagues discuss health-related benefits of experiencing natural light; their work indicates how important it is to optimize the amount of glare-free natural light that flows into a space. The researchers report that “Sunlight has important biological effects in human skin. Ultraviolet (UV) light striking the epidermis catalyzes the synthesis of Vitamin D and triggers melanin production. Although a causative element in skin cancers, sunlight is also associated with positive health outcomes including reduced incidences of autoimmune diseases and cancers.”
Thieu Phan, Barbara Jaruga, Sandeep Pingle, Bidhan Bandyopadhyay, and Gerard Ahern. 2016. “Intrinsic Photosensitivity Enhances Motility of T Lymphocytes.” Nature, Scientific Reports, vol. 6, article number 39479.