If you read the book on the night time with light emitting e-books, then you will have to reduce it because reading e-books on the night time may damage your sleep and your health. The team from Havard Medical School made the test for reading books and reading light emitting e-books before sleep.
The test result indicated that e-book readers led to poor quality sleep and more tired in the morning. Professor Charles Czeisler mention on BBC News “The light emitted by most e-readers is shining directly into the eyes of the reader, whereas from a printed book or the original Kindle, the reader is only exposed to reflected light from the pages of the book. Sleep deficiency has been shown to increase the risk of cardiovascular disease, metabolic diseases like obesity and diabetes, and cancer. Thus, the melatonin suppression that we saw in this study among participants when they were reading from the light-emitting e-reader concerns us.”
To prevent more tired on using light emitting e-book, Dr Victoria Revell, a researches from University Of Surrey, suggested e-book readers to minimize the light emitting in the evening, especially for teenagers because they had body clock, a rythm of day and night that uses light to tell the time.
- BBC News on December 23, 2014
- Proceedings of The National Academy of Sciences of the United States of America (PNAS) Official Website