Study.. Balancing Daylight and Nighttime Darkness Protects the Brain and Reduces the Risk of Heart Disease

Research on the biological clock describes it as the vital regulator of every cell in the human body. It operates on an approximately 24-hour cycle, controlling essential functions such as digestion, learning, and cell repair, relying entirely on light balance to synchronize with the surrounding environment.

According to studies conducted by the University of Exeter and the Barcelona Institute for Global Health, which monitored the daily routines of six individuals using light sensors, increased exposure to light in the morning and reduced exposure in the evening helps maintain a healthy weight and lowers the risk of diabetes and certain types of cancer.

In this regard, researcher Anne Skeldon explained that this internal clock functions best when a regular day–night rhythm is maintained. Meanwhile, researcher Stuart Peirson noted that blue light from screens and strong evening lighting act as stimulants similar to caffeine, delaying sleep onset and reducing the secretion of melatonin.

The findings also revealed that disrupted light exposure increases the risk of obesity, cardiovascular diseases, and mental health disorders. Researchers warned that exposure to light during sleep—even from streetlights—is associated with a higher risk of depression and cancer.

This scientific discovery confirms that maintaining a balance between natural daylight and nighttime darkness is a fundamental pillar for safeguarding the brain’s main control center and ensuring the proper functioning of all vital processes.