red light for sleep

Using red light in the evening can be beneficial for improving sleep by minimizing the disruptive effects of blue light. Red light has much less impact on the circadian clock and cortisol levels compared to other artificial lights. This helps facilitate a more restful sleep environment and allows for easier transition to sleep 1 2 3.

light bulbs can be used to create a calming atmosphere by eliminating blue wavelengths, which are known to stimulate cortisol and noradrenaline, hormones that can affect sleep 4 5. Andrew Huberman suggests using dimmable red lights in spaces where you spend time before bed, such as the bedroom or reading areas, as they help in reducing alertness and promote sleepiness 6.

Also, when traveling or staying in environments with harsh lighting, switching to red light can greatly improve sleep consistency and depth, as it helps reduce the cortisol-triggering properties of light at night 1. Overall, integrating red light use into an evening routine can support better sleep health.