132nd Day Of Lockdown

Maharashtra44122827680915576 Tamil Nadu2576131964834132 Andhra Pradesh158764828861474 Delhi1376771233174004 Karnataka134819577252496 Uttar Pradesh92921533571730 West Bengal75516527301678 Telangana6766048609551 Gujarat63675466892482 Bihar5727036637322 Rajasthan4441031216706 Assam4290532385105 Haryana3651929690433 Odisha3491321955236 Madhya Pradesh3353523550886 Kerala259121446383 Jammu and Kashmir2141613127396 Punjab1785311466423 Jharkhand121884513115 Chhatisgarh9608699158 Uttarakhand7593443786 Goa6530466853 Tripura5248346323 Puducherry3806230952 Manipur283117377 Himachal Pradesh2654150813 Arunachal Pradesh19359693 Nagaland19356484 Chandigarh111769819 Meghalaya8742645 Sikkim6582891 Mizoram4702580
Science 18 Jul 2019 Gadget's blue light ...

Gadget's blue light increases consumption of sweets in rats at night

ANI
Published Jul 18, 2019, 5:22 pm IST
Updated Jul 18, 2019, 5:22 pm IST
Studies show that screen use at night may increase our tendency to snack on sugary foods.
Researchers exposed rats to nighttime blue light and measured their food consumption and glucose tolerance the following day. (Photo: AP)
 Researchers exposed rats to nighttime blue light and measured their food consumption and glucose tolerance the following day. (Photo: AP)

A new study revealed that just one hour of exposure to blue light (the kind of light produced by the screens of our many devices) at night raises blood sugar levels and increases sugar consumption in male rats.

Previous research has shown a strong correlation between obesity and the levels of artificial light at night. Much of the artificial light we are now exposed to comes from LED lights and LED screens, which emit high levels of blue light. Retinal cells of the eye are sensitive to this blue light and directly convey information to areas of the brain that regulate appetite, according to the study which was presented at the meeting of Ingestive Behavior.

 

Researchers exposed rats to nighttime blue light and measured their food consumption and glucose tolerance the following day. It should be noted that, in order to better model human light exposure, the rats used in this study were diurnal, meaning awake during the day and asleep at night, rather than the typical nocturnal laboratory rats which are awake during nighttime hours. The authors found that after only one hour of nocturnal blue light exposure, glucose tolerance was altered in male rats, a warning sign of pre-diabetes.

To investigate what happens with appetite control and food choice after exposure to blue light at night, the rats were given the option to choose among a nutritionally balanced food (standard rodent food), water, lard, and sugar water. After the exposure to blue light, they observed that the male animals drank more sugar that night than during the nights with no blue light exposure.

 

These studies show clearly that being exposed to light, especially blue light, at night is disruptive and that screen use at night may increase our tendency to snack on sugary foods and disrupt our ability to process that sugar, especially in males. Though the rats were tested after only one night of light exposure, over time, this could lead to weight gain and the development of diabetes.

"Limiting the amount of time that we spend in front of screens at night is, for now, the best measure to protect ourselves from the harmful effects of blue light. In case it is necessary to be exposed to devices at night, I would recommend the use of apps and night mode features on the devices, which turn the screens more orange and less blue or the use of blue light filtering googles that are already available in the market." said, one of the researchers of the study Anayanci Masis-Vargas.

 

Click on Deccan Chronicle Technology and Science for the latest news and reviews. Follow us on Facebook, Twitter

...




ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT