The illumination of about sleep leave a light bulb, can cause obesity?!

When you try to sleep leaving the lighting of about fairy lights at night, there is a possibility that the cause of obesity, I found in research from Assistant Professor Obayashi (Kashihara prefecture) Narakenritsuidai.
Carried out for April to 12 September 2010, 528 elderly people of the prefecture investigation. I was measured at room temperature and illumination during sleep for two days, put the sensor in the bedroom and living room of the home. Of the 383 people who had been sleeping in a state of almost total darkness of less than 3 lux illumination, people (BMI) was "overweight" body mass index of 25 or more indicating the degree of obesity is 68 people. On the other hand, was a brightness of about 145 people bulb 9 lux illuminance about 39 people were obese. If you compare the two, who were found sleeping in the brightness of the light bulb around, that was 1.7 times higher in "dyslipidemia" such as 1.9 times higher, and the percentage of neutral fat obesity.
Also, are there are many obese people in night workers, it is believed that the cause modulation in biological rhythms by receiving a strong light at night is one of the causes. There is also experimental results weight and increase appetite increased when exposed to light at night, 5 lux to rats during the day "is not exposed to sunlight in the room, Assistant Professor Obayashi at night modern bathe a lot of artificial lighting I'm telling people, "I will continue to further elucidate the effects of light on how showered. many health benefits.

When you go to bed at dark when I'm good. But I am also a little overweight, night, it is often in bed with a light bulb.



夜間に豆電球程度の照明をつけたまま寝ると、肥満の原因になる可能性があることが、奈良県立医大（同県橿原市）の大林特任助教らの調査研究でわかった。
　調査は２０１０年９月～１２年４月、県内の高齢者５２８人を対象に実施。自宅の寝室や居間に２日間、センサーを設置して睡眠時の照度や室温を測定した。照度３ルクス未満のほぼ真っ暗な状態で寝ていた３８３人のうち、肥満の程度を表す体格指数（ＢＭＩ）が２５以上の「肥満」だった人は６８人。一方、照度約９ルクスの豆電球程度の明るさだった１４５人では３９人が肥満だった。両者を比べると、豆電球程度の明るさで寝ていた人の方が、肥満の割合が１・９倍、中性脂肪が高いなどの「脂質異常症」では１・７倍多かったという。
　また、夜勤労働者には肥満の人が多いとされており、夜間に強い光を受けることで生体リズムに変調をきたすことが原因の一つと考えられている。ラットに夜間、５ルクスの光を当てると食欲が増して体重が増えるとの実験結果もあり、大林特任助教は「日中は室内にいて日光を浴びず、夜は人工照明を多く浴びる現代人は多い。光の浴び方が健康に及ぼす影響をさらに解明していきたい」と話している。
寝るときは真っ暗がいいんですね。私もちょっと肥満ですが、夜、豆電球をつけて寝ていることが多いですね。