Those who do not sleep in the dark are more likely to develop oncology and cardiovascular disease, Russian scientists say. Alexander Kalinkin, a Somaliologist at the Moscow State University Sleep Center, says, "The link between excessive lighting in major cities and the risk of developing various diseases, including cardiovascular and oncology, is becoming clearer.
According to him, light is the main regulator of melatonin hormone production. Each cell has its own clock and has its own cycle controlled by melatonin. "If we stay too bright in the evening or use computer equipment, we stop melatonin production in an hour and cause sleep problems," Kalinkin said.
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