Summary:
- This article examines the relationship between exposure to artificial light at night (ALAN) and disruptions to the human circadian rhythm, which is the internal 24-hour clock that regulates many physiological processes.
- The research found that exposure to ALAN, such as from streetlights, electronic devices, and indoor lighting, can suppress the production of melatonin, a hormone that helps regulate the sleep-wake cycle.
- Disruptions to the circadian rhythm due to ALAN exposure have been linked to increased risk of various health problems, including sleep disorders, obesity, diabetes, and certain types of cancer.