Light Exposure and COVID: A Circadian Connection

Imagine you're living in Tyumen, Russia. Scientists there studied 122 adults, average age 24, to see how COVID-19 affects their sleep patterns. They tracked their activity for seven days using a special watch. The group was split into those who had COVID (79 people) and those who didn't (43 people). They found that people who had COVID were more sensitive to light. Their bodies reacted differently to light exposure, especially blue light.

This made their sleep patterns worse. They went to bed later, slept less, and had less active time during the day. People who had poor light habits, like not getting enough natural light, had even worse sleep issues. The longer ago they had COVID, the older they were, and the worse their sleep was. So, if you've had COVID, it's really important to pay attention to your light exposure to keep your sleep healthy.

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