The guest of the TV Nova program Naše Česko on 3 February 2026 was Hynek Medřický. The discussion, as expected, was devoted to light. Not only in connection with current events in Prague, where Hynek is advocating for a reconsideration of the decision to introduce LED lamps with white light, but also in response to the recently published research Czechs and Light (link).
We briefly summarize the interview: Sunlight has a fundamental impact on human health, mental well-being, and overall quality of life. According to Czech light expert Hynek Medřický, we should spend at least two hours outdoors every day. Natural light plays an important role in the functioning of the human body, and its lack can have negative consequences.
Natural Light as the Foundation of a Healthy Routine
Sunlight helps the human body regulate its biological clock, the so-called circadian rhythm. This affects sleep, alertness, concentration, and overall energy levels throughout the day. A lack of daylight can lead to sleep problems, fatigue, or a worsened mood.
Hynek Medřický points out that the modern lifestyle often leads people to spend most of their day indoors. According to him, this is not natural and does not benefit the body. The human organism is designed for regular contact with daylight, which influences hormone production.
The mentioned research Czechs and Light examined the relationship of Czech people to light. It showed that people are aware of its importance and also understand that artificial lighting can have negative effects on health. Czechs themselves frequently mention the circadian rhythm and its influence on sleep, energy, and mood, confirming the growing awareness of how light affects their daily lives.
More Light in Everyday Life. But How?
Simply by incorporating time outdoors into your daily routine. A short morning walk or movement during the day is ideal. Spending time outside during the winter months, when there is naturally less daylight, is also important.
According to experts, natural sunlight is irreplaceable, but pro-cognitive full-spectrum lighting, which resembles sunlight in its spectrum, may help and can have a similar positive effect on the body and mind.
Watch the full report HERE.
Translated using AI
