Study Links Nighttime Light Exposure to Health Risks

Recent studies highlight the detrimental effects of artificial light exposure on health and sleep, particularly in urban areas. Research from Southern University of Science and Technology reveals a significant correlation between artificial light at night (ALAN) and insomnia among residents in small to medium-sized cities in China, showing that these areas experience higher insomnia rates than larger cities. Additionally, Dr. Mario Motta, a retired cardiologist and amateur astronomer, emphasizes that excessive night lighting suppresses melatonin production, which is linked to various health issues, including increased cancer risks. A separate study indicates that high nighttime light exposure is associated with a 21-34% higher risk of mortality. These findings collectively suggest that both insufficient daytime light and excessive nighttime exposure have serious implications for public health.