January 07, 2026

How Artificial Light Undermines Your Liver Health

7 minutes

Your circadian rhythm controls vital organ functions, including how your liver processes nutrients and filters toxins. Exposure to artificial blue light disrupts this rhythm, triggering a chain reaction that destabilizes liver health
German researchers found that long-term artificial light exposure alters liver gene expression and melatonin production, contributing to the development and progression of fatty liver disease over time
An earlier controlled animal study showed that constant light combined with a high-fat diet led to more weight gain, insulin resistance, and gut-derived liver inflammation than the same diet under normal lighting
The circadian disruption caused by artificial light doesn't just affect the liver; it's linked to obesity, Type 2 diabetes, cardiovascular disease, hormone-driven cancers, and higher rates of depression and anxiety
Simple steps like dimming household lights after sunset, wearing blue-blocking glasses in the evening, and limiting screen time at night can help realign your circadian rhythm and protect your liver

...more

By Dr. Mercola

4.6

14871,487 ratings

January 07, 2026

7 minutes

Your circadian rhythm controls vital organ functions, including how your liver processes nutrients and filters toxins. Exposure to artificial blue light disrupts this rhythm, triggering a chain reaction that destabilizes liver health
German researchers found that long-term artificial light exposure alters liver gene expression and melatonin production, contributing to the development and progression of fatty liver disease over time
An earlier controlled animal study showed that constant light combined with a high-fat diet led to more weight gain, insulin resistance, and gut-derived liver inflammation than the same diet under normal lighting
The circadian disruption caused by artificial light doesn't just affect the liver; it's linked to obesity, Type 2 diabetes, cardiovascular disease, hormone-driven cancers, and higher rates of depression and anxiety
Simple steps like dimming household lights after sunset, wearing blue-blocking glasses in the evening, and limiting screen time at night can help realign your circadian rhythm and protect your liver

...more