Japanese scientists believe lack of sleep cause obesity
The researchers found that when the lack of sleep, often hungry, but the body continues to expend the same amount of energy as before, which leads to weight gain.
TOKYO, February 25. /Offset. TASS Alex Sarachev/. People who suffer from regular lack of sleep are more prone to obesity than those who sleep the required number of hours per day. To such conclusion the Japanese scientists from Waseda University and the company Kao Corp., according to The Asahi Shimbun.
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In their study involved two groups of healthy men at the age of 23-25 years. Each of them within three days was in a separate room specially equipped to ensure that doctors can easily measure the level of metabolism.
Members of the first group for three days, slept 7 hours a day, the second — two times less. While all the participants in the experiment were given the same amount of food throughout the day and regularly asked about how do they feel hunger.
Three days later, both groups of men measured the amount of hormones responsible for controlling appetite and found that lack of sleep led to reduce them immediately to 10%. Most strongly it was shown in the late hours before sleep — this is the time the hunger nedosypayuschih men is particularly acute. Due to the fact that they continued to stay awake, they needed more energy.
However, as their body returned to normal after only a day, when they managed to sleep 7-8 hours.
“The relationship between sleep, physical activity and amount of food is really very strong. When the lack of sleep, often hungry, while the body continues to expend the same amount of energy as before. In the end, this becomes one of the causes of obesity,” explained Professor Sunao Uchida from Waseda University.