Australia study reveals eye masks improve metabolism at night

Researchers from Flinders University in Australia conducted a study revealing that exposure to light at night disrupts the body's internal clock, negatively impacting metabolism. The study involved nearly 2,000 participants, showing that those with increased night-time light exposure had a significantly higher risk of developing type 2 diabetes. Specifically, individuals exposed to 0-20% more light than average faced a 29% greater risk compared to those with lower exposure levels. The biological mechanisms behind these findings involve the hormone melatonin, which is crucial for regulating sleep. Light exposure at night reduces melatonin production, leading to sleep disturbances and increased blood glucose levels. This disruption can cause insulin resistance over time, contributing to the development of diabetes. Additionally, sleep deprivation affects hunger-regulating hormones, increasing ghrelin levels (which stimulate appetite) and decreasing leptin levels (which signal fullness). This hormonal imbalance can lead to increased hunger and, consequently, weight gain. The study highlights the importance of minimizing light exposure during the night to maintain a healthy metabolism and reduce the risk of weight gain and diabetes. Simple measures, such as using eye masks to block out light, can be beneficial for improving sleep quality and overall health.