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Light Could Affect An Individuals’ Weight

October 21, 2010 by  

Light could effect an individuals' weightOne reason that people may gain weight could be due to how much light they are exposed to, according to new research published in the Proceedings of the National Academy of Sciences.

Scientists housed mice in three different conditions for the study. One group was subjected to light 24 hours a day while another group was exposed to a light for 16 hours and then dark for the remainder of the day, which is a standard cycle. The rest of the mice lived in 16 hours of daylight and 8 hours of dim light.

The amount of food the subjects ate as well as physical activity were measured throughout the day. At first, food was not restricted but was later limited in a second study. At the end of each week, the scientists calculated the body mass of the mice.

In conclusion, the subjects who were exposed to light at night gained the most body mass, compared to those who lived under the standard conditions. The researchers also discovered that the mice who gained the most weight also had impaired glucose tolerances which are signs of pre-diabetes.

Overall, the scientists noted that the timing of eating contributes to weight gain as well as the extent of light exposure throughout the evening hours. Experts suggest to maintain a healthy diet, individuals should remain physically active and keep track of their caloric intake.

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  • DANNY

    I think the light of the refrigerator has alot to do with weight. Keep your hands out of the box and pounds will stay off your A##

    • Ivy Vine

      That may be true for MOST people, Danny, but I have a friend who cannot afford much food – he survives on almost nothing and STILL gains weight!
      He is physically the largest person I have known in many, many years, (and I’m in my late 60′s.) So the light in HIS frig is NOT his problem! Much of the cause is edema, (water retention), caused by his other medical conditions.

  • James

    The reason gain weight is because they eat too much food, and exercise too little. The fatter one gets, the less one exercises, and the more fatter he gets. People who weigh over 500 pounds can hardly move at all.

  • Lisa A.

    I think not only being exposed to light in the Evening when you should be sleeping DOES have alot to do with weight gain because of how the light affects the hormones, etc. Adequate DEEP Sleep is actually very important in maintaining healthy weight and immune system.

    Not getting enough light during the daylight hours also affects weight gain- because without the sunlight’s balancing of seratonin, etc. levels, one will instinctively eat more starches and flour carbohydrates to compensate and raise those “feel good” brain chemical levels.

    Of course , being a couch potato will not help matters- and moderate excersize also raises those feel good chemicals we need to curb oversnacking.

    Drinking enough water in between meals also helps- as it helps detox the body’s organs- such as the liver– from everyday industrial and chemical toxins that cause the body to build up fat deposits to safely store these toxins.

    Eating enough chemically free raw or steamed fruits and vegetables helps too- especially when you eat low glycemic fruits like berries, and green leafy vegetables or broccoli, etc.

    Everything ties in together in bringing the body down to a healthy weight. These things have helped me drop a dress size so far– With that said, I am logging off now to get my proper sleep !

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