
The Facts
In a 2017 study by the University of Haifa and Assuta Sleep Clinic, blue light was proven to make it much harder for a person to fall asleep while simultaneously damaging the duration and quality of rest. The study consisted of 19 healthy adults ages 20-29, who were placed in front of a computer screen between 9pm and 11pm, the hours when the body begins to naturally produce melatonin. The screen exposed them to four different types of light: high-intensity blue light, low-intensity blue light, high-intensity red light, and low-intensity red light.- After exposure to red light (at both intensities), participants experienced an average of 4.5 unnoticed awakenings
- Low-intensity blue light = 6.7 awakenings
- High-intensity blue light = As many as 7.6 awakenings