The Impact of Light Exposure on Health

Research indicates that exposure to light, particularly during the evening, significantly affects health outcomes. A study involving 90,000 participants in the UK found that individuals exposed to brighter nights had a 21 to 34 percent higher risk of premature mortality, compared to those who experienced darker nights. In contrast, brighter days were correlated with a 17 to 34 percent lower risk of early death. This relationship suggests that maintaining a balance of bright days and dark nights could lead to a substantial increase in life expectancy, with estimates of up to five years gained for those who adhere to this pattern.