“More research needed”

“More research is needed to understand the relationships between natural light and circadian rhythms, and their effects on health and well-being. Many societies are ageing, so the links between a lack of sunlight, dementia and Alzheimer’s disease should be explored. Another potential research question is whether there is any relation between daylight exposure and increased chronic inflammatory and autoimmune diseases. Impacts on the environment need to be better understood; there have been few studies on shadowing and vegetation in cities, for example, or on the development of moulds inside buildings, which might affect health.” (Zielinska-Dabkowska and Xavia, 2019)