Most people are aware of the importance of vitamin D for good health and that it comes from the sun in its natural form. And many know that the light from our electronic devices can mess with their ability to sleep at night. But did you know that your exposure to bright light — perhaps natural or artificial — may even be powerful enough to alter your metabolism?
In a recent study conducted by Northwestern University, 19 adults were exposed to bright, blue-enriched light for three hours each in the morning and in the evening over a four-day period. Hunger, metabolic function and physiological arousal were tracked and the results were compared against the results for exposure to dim light.
All participants were exposed to dim light in their waking hours over the first two days. On the third day, half of the participants were exposed to bright light in the morning while the other half were exposed to bright light in the evening.
