Light exposure and human health: sun-safe and healthy behaviours

The effects of light exposure on human health are becoming widely recognised. For example, we need adequate daylight exposure for circadian entrainment (i.e. to synchronise our body clock) and to maintain physiological processes, such as, sufficient Vitamin D synthesis. Exposure to sunlight can have both positive and negative health impacts. Excessive exposure to ultra-violet (UV) radiation from the sun can cause skin cancer, however, insufficient exposure to sunlight has a detrimental effect on the production of Vitamin D.

There is limited research in understanding the barriers to adopting sun-safe behaviours and the association this may have with Vitamin D production. The purpose of this seminar is to provide an overview of the impacts of light on health, how this might affect the human body and present our current research. This is an intervention study exploring the effectiveness of a text messaging service (SMS) and supportive smartphone app, which aims to reduced UV exposure and promote appropriate dietary changes to boost Vitamin D intake.