By examining a number of mice, researchers found that the beam of light at night can lead to weight gain, even
without changing the physical activity or even eat more. In this research found that mice that were exposed to
dim light at night for eight weeks his weight was 50 percent more than rats with light and dark cycle. "Although there was no difference in activity level or daily food consumption, rats who live with light as the
night grows more fat than other mice," said Laura Fonken, the student "neuroscience" at Ohio State University
who did the research. This study also showed that rats who live with light at night, eating at
an unusual time. "Something in the evening light made the rats want to eat at the wrong time," said Randy Nelson, co-investigators. In this study, mice were placed in three different rooms: namely in the room with light exposure for 24 hours continuously, the standard light and dark cycle (light exposure for 16 hours, 8
hours dark), and the cycle of 16 hours of light on during the day and 8 hours of light. The results
show that mice with low light moment evening body mass increased more than those living in standard
light and dark cycles. Their weight continued to increase since the first week of the study. At the
end of the study, mice who live with the evening light weight approximately 12 grams. Rats who live with the
standard cycle of dark and light weight body only 8 grams. According to Randy, this research can also be analogous to the daily cycle of human beings in general and to establish other causes of the obesity epidemic in the U.S.. The study is published in "Proceedings of the National Academy of Sciences, this week.
(Ant / Job)