Artificial Light Pollution Emerging as Public Health Threat: Study Links ALAN to Migraines

Artificial light at night (ALAN) is increasingly recognized as a significant environmental and public health concern, with scientific studies revealing its harmful effects on human health. A 2016 global analysis found that over 80 per cent of the world's population lives under light-polluted skies, with nearly one-third unable to view the Milky Way due to artificial light pollution.

Light pollution has grown substantially due to increased urban infrastructure, digital technologies, LED lighting systems and illuminated commercial spaces. Research shows Earth's light reflected from its surface grew by approximately 2.2 per cent annually from 2012 to 2016. Recent studies also indicate that light pollution from cultural events with excessive decorative lighting significantly impacts global light pollution levels.

Scientific evidence now demonstrates that ALAN disrupts circadian rhythms and causes neurological stress, with migraines and photophobia emerging as health concerns. Experts call for scientifically informed light-pollution regulation in India to address this growing but underrecognized environmental and public health problem.